Wissenschaftliche Artikel der BAM
Filtern
Dokumenttyp
- Zeitschriftenartikel (344)
- Sonstiges (6)
- Beitrag zu einem Tagungsband (1)
- Corrigendum (1)
Sprache
- Englisch (342)
- Deutsch (9)
- Mehrsprachig (1)
Schlagworte
- Fluorescence (52)
- Quantum yield (34)
- Sensor (23)
- Lifetime (20)
- Quality assurance (19)
- Photophysics (18)
- Dye (17)
- Nano (15)
- Synthesis (13)
- Immunoassay (12)
- Magnetic resonance imaging (12)
- NIR (12)
- Photoluminescence (12)
- Cancer (11)
- Imaging (11)
- Lanthanide (10)
- Nanomaterial (10)
- Nanoparticle (10)
- Method (9)
- Nanoparticles (9)
- Quantum dots (9)
- ELISA (8)
- Electrochemistry (8)
- ICP-MS (8)
- Mechanism (8)
- Molecularly imprinted polymers (8)
- Particle (8)
- Reference material (8)
- Mass spectrometry (7)
- Raman spectroscopy (7)
- Soil (7)
- Traceability (7)
- Affinity chromatography (6)
- Contrast agent (6)
- Energy transfer (6)
- Gadolinium (6)
- MRI (6)
- Multiplexing (6)
- Mycotoxins (6)
- Optical probe (6)
- PH (6)
- Surface chemistry (6)
- Upconversion nanoparticle (6)
- Core-shell particles (5)
- Cr(III) (5)
- Flow cytometry (5)
- IgG (5)
- Laser ablation (5)
- Ligand (5)
- Luminescence (5)
- Mass Spectrometry (5)
- Microscopy (5)
- Raman microspectroscopy (5)
- Reproducibility (5)
- Single particle (5)
- Aggregation (4)
- Analytical Chemistry (4)
- Biosensor (4)
- Brightness (4)
- Cement (4)
- HPLC (4)
- Immunosensor (4)
- Industry 4.0 (4)
- Interlaboratory comparison (4)
- LA-ICP-MS (4)
- LC-MS/MS (4)
- LIBS (4)
- Lab-on-a-chip (4)
- Nitrotyrosine (4)
- Protein A (4)
- SWIR (4)
- Signal enhancement (4)
- XPS (4)
- XRF (4)
- Air pollution (3)
- Allergy (3)
- Antibiotics (3)
- Antibodies (3)
- Antikörper (3)
- BODIPY (3)
- Bead (3)
- Biosensing (3)
- Bisphenol A (3)
- Brain (3)
- Calibration (3)
- Coating (3)
- Complex (3)
- Copper (3)
- Corrosion (3)
- Crystal (3)
- DNA origami (3)
- Diagnostics (3)
- Ergot alkaloids (3)
- Excitation power density (3)
- Extracellular matrix (3)
- FPLC (3)
- Food analysis (3)
- Gadofosveset (3)
- General Medicine (3)
- HRMS (3)
- High-resolution mass spectrometry (3)
- Human serum (3)
- Hybridoma (3)
- Hydrolysis (3)
- Immunocapture (3)
- Immunoglobulins (3)
- Iron oxide (3)
- Isotope dilution (3)
- Isotope ratio (3)
- MOF (3)
- Mass Spectroscopy (3)
- Mechanochemistry (3)
- Metabolomics (3)
- Metrology (3)
- Microfluidics (3)
- Molecular imaging (3)
- Molecular imprinting (3)
- Monoclonal antibody (3)
- Mycotoxin (3)
- NMR (3)
- Nitration (3)
- Optical spectroscopy (3)
- Pollution (3)
- Polymer (3)
- Process Industry (3)
- Protein G (3)
- Quality Control (3)
- Quantification (3)
- Quantitative spectroscopy (3)
- Raman (3)
- Reference materials (3)
- Screening (3)
- Sensitization (3)
- Spectroscopy (3)
- Switch (3)
- Teststreifen (3)
- Transformation products (3)
- Tyrosine (3)
- Uncertainty (3)
- Upconversion (3)
- AAS (2)
- Absolute isotope ratio (2)
- Affinity Chromatography (2)
- Affinitätschromatographie (2)
- Aggregation induced emission (2)
- Amorphous carbon (2)
- Amoxicillin (2)
- Amperometry (2)
- Antibody (2)
- Antibody coating (2)
- Aromatic amino acid analysis (2)
- Atherosclerosis (2)
- Bacteria (2)
- Barcoding (2)
- Bead-based assay (2)
- Benz[a]anthracene (BaA) (2)
- Benzo[a]pyrene (BaP) (2)
- Biochemistry (2)
- Biochip (2)
- Biocides (2)
- Bioconjugation (2)
- CONSENS (2)
- Cell proliferation (2)
- Certified reference material (2)
- Charge transfer (2)
- Chromatography (2)
- Comparability (2)
- Core−shell particles (2)
- Cuprorivaite (2)
- Cytotoxicity (2)
- Delta scale (2)
- Derivatization (2)
- Diagnosis (2)
- Digitalisation (2)
- Dimerization (2)
- Dityrosine (2)
- Documentation (2)
- Egyptian blue (2)
- Electron microscopy (2)
- Emission spectroscopy (2)
- Endocrine disruptor (2)
- Enhancement (2)
- Environmental Chemistry (2)
- Exocytosis (2)
- Fatty acid metabolism (2)
- Fertilizer (2)
- Ferumoxytol (2)
- Fluoride (2)
- Food (2)
- Gas chromatography (2)
- Gas chromatography (GC) (2)
- General Earth and Planetary Sciences (2)
- Glyphosate (2)
- Gold nanoparticles (2)
- HPLC-MS/MS (2)
- HTS (2)
- Health, Toxicology and Mutagenesis (2)
- Heart failure (2)
- Hydrazinolysis (2)
- ICP-OES (2)
- Immunoaffinity extraction (2)
- Immunoprecipitation (2)
- Indium phosphide (2)
- Indoor air (2)
- Inflammation (2)
- Iron (2)
- Isotope (2)
- Isotope dilution (ID) (2)
- Isotope ratios (2)
- LIF (2)
- Label (2)
- Lanthanides (2)
- Lateral flow assay (2)
- Life sciences (2)
- Lipidomic profile (2)
- Liquid chromatography (LC) (2)
- Lithium (2)
- MALDI (2)
- MALDI-TOF MS (2)
- MC-ICP-MS (2)
- Magnetic beads (2)
- Mass spectrometry (MS) (2)
- Measurement uncertainty (2)
- Mercury (2)
- Mesoporous materials (2)
- Metabolic stress (2)
- Method development (2)
- Microarray (2)
- Microbeads (2)
- Mikrofluidik (2)
- Mikroplastik (2)
- Modelling (2)
- Modular Production (2)
- Molecularly Imprinted Polymers (2)
- Monoclonal Antibodies (2)
- Monolithic column (2)
- Multiplex (2)
- Nanomaterials (2)
- Nickel (2)
- Nitrogen oxides (2)
- Nontarget analysis (2)
- Open Science (2)
- Optical detection (2)
- Origami (2)
- Oxygen (2)
- Ozone (2)
- PFAS (2)
- Passivation (2)
- Peptide (2)
- Peptide library (2)
- Phenylalanine (2)
- Phosphorylated peptides (2)
- Photodegradation (2)
- Polycyclic aromatic hydrocarbon (PAH) (2)
- Process Analytical Technology (2)
- Process analytical technology (2)
- Production (2)
- Prostate cancer (2)
- Protein (2)
- Protein nitration (2)
- Proximity-enhanced reaction (2)
- Purification (2)
- Quantum dot (2)
- Real-time process monitoring (2)
- Regeneration (2)
- Sapphire (2)
- Self-assembly (2)
- Sensorpartikel (2)
- Sensors (2)
- Sequence coverage (2)
- Serum (2)
- Sewage sludge (2)
- Shell (2)
- Sialic acid (2)
- Single molecule (2)
- Smart sensors (2)
- Software (2)
- Solid state NMR (2)
- Sr isotopes (2)
- Standardization (2)
- Standards (2)
- Surface (2)
- Sythesis (2)
- Test strips (2)
- Theory (2)
- Thermal anhydrite (2)
- Thermal desorption (2)
- Toxicity (2)
- Transformation product (2)
- Triple isotope fractionation (2)
- Triplet-triplet annihilation (2)
- Tumor (2)
- Tumor metabolism (2)
- Ultrafine particles (2)
- Upconversion nanoparticles (2)
- Uptake studies (2)
- Validation (2)
- Water analysis (2)
- Yb(III) complex (2)
- ZIF (2)
- ZIF-8 (2)
- 1-indanol (1)
- 150th anniversary (1)
- 150th anniversary of BAM (1)
- 2,5-dihydroxyacetophenone (1)
- 280 nm (1)
- 2D chromatography (1)
- 3D-Mikrofluidik (1)
- 6xHis (1)
- AAA (1)
- AAAA (1)
- ABC (1)
- ABID (1)
- AF4 (1)
- AIE (1)
- AIS (1)
- ATCUN (1)
- Aautomatisation (1)
- Absorption (1)
- Abwasser (1)
- Acoustic (1)
- Acoustic resonance (1)
- Acrylamide (1)
- Acute myocardial infarction (1)
- Additive Fertigung (1)
- Additive Manufacturing (1)
- Additive manufacturing (1)
- Adsorbable organically bound fluorine (AOF) (1)
- Adsorption (1)
- Adulteration (1)
- Advanced Materials (1)
- Advanced material (1)
- Advanced materials (1)
- Advanced nanomaterials (1)
- Affinity (1)
- Affinity Extraction (1)
- Affinity Separation (1)
- Affinity extraction (1)
- Affinitätsextraktion (1)
- AgInS (1)
- Agarose (1)
- Aggregates (1)
- Aggregation-induced emission (1)
- Aging (1)
- Agriculture (1)
- Air filter samples (1)
- Air particulate matter (1)
- Air sampling (1)
- Airport (1)
- AlCl (1)
- Alanine scan (1)
- Algorithms (1)
- Altenuene (1)
- Alternaria mycotoxins (1)
- Aluminum (1)
- Aluminum oxide (1)
- Alzheimer’s disease (1)
- Amino acid analysis (1)
- Amplification (1)
- Amyloid-beta (1)
- Analysis (1)
- Analytical methods (1)
- Analytical sciences (1)
- Aneurysm (1)
- Angiography (1)
- Angiotensin II (1)
- Anhydrite (1)
- Aniline (1)
- Animal slurry (1)
- Anion recognition (1)
- Antagonists (1)
- Anthropocene (1)
- Antibody Purification (1)
- Antibody identification (1)
- Antibody-gated indicator delivery (1)
- Antifouling surface (1)
- Antigens (1)
- Antimicrobial resistance (1)
- App (1)
- Application (1)
- Aptamere (1)
- Aqueous quantum dot (1)
- Aqueous synthesis (1)
- Arabidopsis (1)
- Argon (1)
- Array (1)
- Arsenite (1)
- Artificial Neural Networks (1)
- Artificial intelligence (1)
- Artificial neural networks (1)
- Artificial weathering (1)
- Ash content (1)
- Aspergillus (1)
- Assay (1)
- Atherosclerotic plaques (1)
- Atmospheric aerosol (1)
- Atomic Absorption Spectrometry (1)
- Atomic absorption spectrometry (1)
- Atomic and molecular physics, and optics (1)
- Atomic force microscopy (1)
- Atomic weight (1)
- Augenbohne (1)
- Autoantibodies (1)
- Automated Purification (1)
- Automated image analysis (1)
- Automation (1)
- Autophagy (1)
- Aviation (1)
- Aza-BODIPY (1)
- BAM (1)
- BCA test (1)
- BODIPY dyes (1)
- BODIPY probe (1)
- BODIPYs (1)
- BPA removal (1)
- Back-side integration (1)
- Bacterial lipopolysaccharides (1)
- Bacterial lysates (1)
- Ball milling (1)
- Bassanite (1)
- Bead injections (1)
- Benchmarking study (1)
- Benchtop NMR (1)
- Benzene-1,3,5-tricarboxylic acid (1)
- Benzin (1)
- Benzothiadiazole (1)
- Benzoxadiazole dyes (1)
- Beschichtung (1)
- Bet v 1 (1)
- Betula pendula (1)
- Binary gas mixture (1)
- Binder (1)
- Binding molecule (1)
- Bioanalysis (1)
- Biodiesel (1)
- Biodiesel fuel (1)
- Biofilm (1)
- Bioinformatics (1)
- Biology (1)
- Biomarker (1)
- Biomarkers (1)
- Biomimicry (1)
- Biosensors (1)
- Bioseparation (1)
- Biosilicification (1)
- Biosynthesis (1)
- Biotechnology (1)
- Biotests (1)
- Birch pollen allergen (1)
- Bismuth (1)
- Boden (1)
- Boltzmann plot (1)
- Bombs (1)
- Border surveillance (1)
- Boron compound (1)
- Borosilicate Glass (1)
- Borosilicatglas (1)
- Borosilikatglas (1)
- Bovine serum albumin (BSA) (1)
- Bradford (1)
- Building material (1)
- Bundesanstalt für Materialforschung und -prüfung (1)
- C-C coupling (1)
- CCQM (1)
- CE/MC-ICP-MS (1)
- CEA (1)
- CO2 + n-alkanes (1)
- COVID-19 (1)
- CRM (1)
- CRP (1)
- CUINS2 nanocrystals (1)
- CaCl emission bands (1)
- Cadmium (1)
- Calcite (1)
- Calcium (1)
- Calcium carbonate (1)
- Calcium carbonates (1)
- Calibrated fluorescence measurements (1)
- Calibration-free analysis (1)
- Cancer awareness measure (1)
- Cancer cells (1)
- Cancer risk (1)
- Canine olfactometry (1)
- Carbamazepine (1)
- Cardiac troponin (1)
- Cardiolipins (1)
- Cardiovascular (1)
- Carrier (1)
- Carrier protein (1)
- Carrier-Material (1)
- Carriers (1)
- Cconventional method (1)
- Cell studies (1)
- Cellular substructure (1)
- Cellulose (1)
- Cement clinker remnants (1)
- Cerium oxide (1)
- Charged dyes (1)
- Chelate (1)
- Chemical Process Control (1)
- Chemical Safety (1)
- Chemical evolution (1)
- Chemical protein modification (1)
- Chemiluminescence (1)
- Chemodosimeter (1)
- Chemometrics (1)
- Chicken antibodies (1)
- Chirality (1)
- Chlorides (1)
- Chlorine (1)
- Chlorine determination (1)
- Chloroanilines (1)
- Ciaaw.org (1)
- Citation (1)
- Citizen Science (1)
- Citrullinated (1)
- Classical primary measurement method (CPM) (1)
- Classification (1)
- Cleaning (1)
- Cleavage (1)
- Click chemistry (1)
- Climate (1)
- Clinical Biochemistry (1)
- Clones (1)
- Cmos (1)
- Cobaloxime complex (1)
- Cocoa (1)
- Collaborative trial (1)
- Collagen (1)
- Collection (1)
- Colloidal semiconductor nanocrystals (1)
- Color (1)
- Column holder (1)
- Combinatorial chemistry (1)
- Combinatorial peptide library (1)
- Combustion (1)
- Combustion Ion Chromatography (1)
- Combustion ion chromatography (CIC) (1)
- Commercial metal-organic frameworks (1)
- Commercialization (1)
- Compartmentalization (1)
- Competitive Immunoassay (1)
- Complexation (1)
- Compound-independent calibration (1)
- Concentration step (1)
- Concrete (1)
- Confiscation (1)
- Conformation (1)
- Conjugate (1)
- Construction (1)
- Construction products (1)
- Consumer Products (1)
- Continuous Processes (1)
- Continuous Sensor (1)
- Continuous processes (1)
- Conventional isotope ratio (1)
- Converter material (1)
- Coordination polymer (1)
- Core-shell (1)
- Core–shell particles (1)
- Corona virus (1)
- Corophium volutator (1)
- Corundum (1)
- Cr(III) complex (1)
- Cross section (1)
- Cross-sectioning (1)
- Crosslinker (1)
- Cryoadsorption (1)
- Cucurbituril (1)
- Customs (1)
- Cyanide in soil (1)
- Cyber-Physical Systems (1)
- Cyber-physical system (1)
- Cyclic voltammetry (1)
- Cyclometalated iridium (III) complexes (1)
- Cytoplasm (1)
- DFA (1)
- DFT (1)
- DHAP (1)
- DNA (1)
- DNA radiation damage (1)
- DNA strand breaks (1)
- DPA (1)
- Damage-associated molecular patterns (DAMPs) (1)
- Data (1)
- Data Fusion (1)
- Data infrastructures (1)
- Data processing (1)
- De novo peptide sequencing (1)
- Deep learning-based tools (1)
- Degradation (1)
- Degradation of refrigerants (1)
- Delta isotope standard (1)
- Delta value (1)
- Dendrimer (1)
- Density data (1)
- Design of experiment (1)
- Detection (1)
- Deterioration (1)
- Development (1)
- Diagnostic Antibodies (1)
- Diastolic dysfunction (1)
- Diatomic molecule (1)
- Diclofenac (1)
- Diesel exhaust (1)
- Diffusion (1)
- Digestion (1)
- Digital Transformation (1)
- Digital Twins (1)
- Digital holographic cytometry (1)
- Digital immunoassay (1)
- Digital representations (1)
- Digital transformation (1)
- Digital twins (1)
- Digital workflows (1)
- Digitalisierung der Prozessindustrie (1)
- Digitization of process industry (1)
- Dip-stick assay (1)
- Disinfection (1)
- Dissolution (1)
- Dityrosine crosslinking (1)
- Docking (1)
- Down Stream Processing (1)
- Downstream Processing (1)
- Downstream processing (1)
- Druckstabilität (1)
- Drug Discovery (1)
- Drug search (1)
- Drug trafficking (1)
- Dual sensing (1)
- Dual-color labeling glycan (1)
- Duplex stainless steels (1)
- Dyad (1)
- Dye loading optimisation (1)
- Dye monomers (1)
- Dye release (1)
- Dyes (1)
- Dyes/pigments (1)
- Dynamic calibration gas mixtures (1)
- EC/MS (1)
- ECR (1)
- EDTAD (1)
- EP-3533 (1)
- ESMA (1)
- EU-WFD (1)
- EXAFS (1)
- Early Earth (1)
- Ecotoxicity (1)
- Editorial (1)
- Elastin (1)
- Elastin-specific contrast agent ESMA (1)
- Elastin-specific molecular agent (1)
- Electrochemical (1)
- Electrochemical titration (1)
- Electron transfer (1)
- Elektrochemie (1)
- Elektrochemilumineszenz (1)
- Element Specific Bioimaging Using Laser Ablation (1)
- Emergency (1)
- Emission testing (1)
- Enantiomeric excess ee (1)
- Encapsulation (1)
- Encoding (1)
- Endokrine Disruptoren (1)
- Endokriner Disruptor (1)
- Enhancement strategy (1)
- Environment (1)
- Environmental Engineering (1)
- Environmental pollutants (1)
- Environmental simulations (1)
- Environmental speciation (1)
- Enzyme (1)
- Enzyme-Linked Immunosorbent Assay (1)
- Equation of state (1)
- Error correction (1)
- Escherichia coli (1)
- Esterification (1)
- Estrogens (1)
- Ethylenediaminetetraacetic acid (1)
- Etofenprox (1)
- European Reference Material (1)
- Evanescent wave (1)
- Ex vivo (1)
- Excimers (1)
- Excitation (1)
- Exhaust (1)
- Experiment (1)
- Explosiven (1)
- Explosives detection (1)
- Exposure (1)
- Extractable organically bound fluorine (EOF) (1)
- Extraction (1)
- FFF-3D printer (1)
- FFF-3D printing (1)
- FRET (1)
- False Positives (1)
- Feature selection (1)
- Fenton (1)
- Fenton’s reagent (1)
- Finow Canal (1)
- Flexible crystals (1)
- Flourescence (1)
- Flourescin (1)
- Flow injection immunoassay (1)
- Fluorescein (1)
- Fluorescence Polarization (1)
- Fluorescence label (1)
- Fluorescence life time (1)
- Fluorescence spectroscopy (1)
- Fluorescence standard (1)
- Fluorescent dyes (1)
- Fluorescent probes (1)
- Fluorescent sensors (1)
- Fluoreszenz (1)
- Fluorides (1)
- Fluorination (1)
- Fluoroacetic acid (1)
- Folding chirality (1)
- Food fermentation (1)
- Food safety (1)
- Forsterite (1)
- Fourier transform spectroscopy (1)
- Fow injection analysis (1)
- Fragmentation pathway (1)
- Freisetzung (1)
- Fully aromatic frameworks (1)
- Functional group quantification (1)
- Functional monomers (1)
- Fungicide (1)
- Funtional Groups (1)
- Fusarium (1)
- Fusarium mycotoxin (1)
- GC/MS (1)
- GC/MS-MS (1)
- GF-MAS (1)
- GMAW (1)
- Gadolinium-based contrast agent (1)
- Gadovist (1)
- Galvanic anodes (1)
- Gamma-hydroxybutyric acid (1)
- Gas analysis (1)
- Gas sensing (1)
- Gasoline (1)
- Gated materials (1)
- Gd-DOTA (1)
- General Chemistry (1)
- Genotoxicity testing (1)
- Geological material (1)
- Germanium chlorides (1)
- Gesteuerte Freisetzung (1)
- Gesteuerten Nanopartikeln (1)
- Ggadolinium (1)
- Github (1)
- Glasmonolith (1)
- Glass (1)
- Glass Support (1)
- Gold (1)
- Gold nanocluster (1)
- Grafting (1)
- Graphene (1)
- Graphite furnace (1)
- Grass pollen (1)
- Green light excitation (1)
- Grignard reaction (1)
- Grignard-Reaktion (1)
- Ground water (1)
- Groundwater (1)
- Group profile (1)
- Guanidinium receptors (1)
- Gypsum (1)
- Gypsum dehydration (1)
- HAXPES (1)
- HF free Digestion (1)
- HPLC-DAD/FLD (1)
- HPSEC (1)
- HR-CS-MAS (1)
- Hafnium (1)
- Hapten Immunoassay (1)
- Hay fever (1)
- Heart attack (1)
- Heat accumulation (1)
- Heat flow (1)
- Heat-transfer Measurements (1)
- Heavy chains (1)
- Hemihydrate (1)
- Hepatocellular carcinoma (1)
- Herceptin (1)
- HexaHis-Tag (1)
- High entropy alloy (1)
- High pH (1)
- High pressure experiments (1)
- High resolution-continuum source-graphite furnace molecular absorption spectrometry (HR-CS-GFMAS) (1)
- High-Speed (1)
- High-Speed Separations (1)
- High-fired gypsum (1)
- High-fired gypsum mortar (1)
- High-fired medieval gypsum mortars (1)
- High-frequency arc discharge (1)
- High-resolution continuum source graphite furnace atomic absorption spectrometry (1)
- High-resolution continuum source molecular absorption spectrometry (1)
- High-throughput (1)
- Highspeed (1)
- His6 (1)
- His8 (1)
- Histidine (1)
- Hot-electrons (1)
- Human Plasma (1)
- Human leukocyte antigen (HLA) (1)
- Human papillomavirus (1)
- Human serum albumin (1)
- Humic matter (1)
- Hydrated silicate melts (1)
- Hydration (1)
- Hydrochloric acid (1)
- Hydrodynamic chromatography (HDC) (1)
- Hydrodynamic model (1)
- Hydrogen Storage (1)
- Hydrogen adsorption (1)
- Hydrogen adsorption storage (1)
- Hydrogen reduction (1)
- Hydrogen uptake reproducibility (1)
- Hydrogen-containing gas mixture (1)
- Hydrothermal fluid (1)
- Hydroxy warfarin (1)
- ICP-MS/MS (1)
- ICP-TOFMS (1)
- ICP-ToF-MS (1)
- ID-MS (1)
- ILC (1)
- IMAC purification (1)
- IR spectroscopy; conductometry (1)
- ISO REMCO (1)
- Identity (1)
- IgE (1)
- IgG determination (1)
- IgY (1)
- Illicit drug (1)
- Image analysis (1)
- Image segmentation (1)
- Imaging Technique (1)
- Imidazole (1)
- Immobilisierung (1)
- Immunassay (1)
- Immunglobulin (1)
- Immunglobuline (1)
- Immunoassays (1)
- Immunoglobulin E (1)
- Immunohistochemistry (1)
- Immunology (1)
- Immunometric assay (1)
- Immunometric biosensor (1)
- Impact (1)
- Imprinting (1)
- In situ (1)
- In situ EXAFS (1)
- In situ SAXS/WAXS (1)
- In situ measurement (1)
- In vivo (1)
- In-house calibration solution (1)
- In-situ analysis (1)
- In-situ process monitoring (1)
- In-vivo (1)
- Indicator displacement assay (1)
- Indoor air quality (1)
- Inductively Coupled Mass Spectroscopy (1)
- Inductively coupled plasma mass spectroscopy (1)
- Inductively‑coupled mass spectrometry (1)
- Industrial gypsum (1)
- Inert gases (1)
- Infrared thermography (1)
- Infrastruktur (1)
- Inhibition (1)
- Inline Analytics (1)
- Inorganic chemical analysis (1)
- Inorganic impurities (1)
- Instrumental isotope fractionation (1)
- Inter layer time (1)
- Interferometric spectroscopy (1)
- Intermixing (1)
- Internal standard (1)
- International drug trade (1)
- Ion mobility spectrometry (1)
- Ionophore (1)
- Ionophore antibiotics (1)
- Iposomes (1)
- Iridium (1)
- Isotope Dilution (1)
- Isotope Labelling (1)
- Isotope amount ratio (1)
- Isotope delta value (1)
- Isotope dilution mass spectrometry (1)
- Isotope reference material (1)
- Isotope-labeled (1)
- Isotopic analysis (1)
- Isotopic fractionation (1)
- Isotopologue Distribution (1)
- Iterative real-time optimization (1)
- Jahrestag (1)
- Job plot (1)
- Kjeldahl (1)
- Knowledge graphs (1)
- Kompost (1)
- LA/ICP-MS Imaging (1)
- LC-MS (1)
- LC-UV absorbance (1)
- LC/HRMS (1)
- LC/MS-MS (1)
- LFIA (1)
- LSVEC (1)
- Lab on a chip (1)
- Lab-on-a-Chip (1)
- Laboratory 4.0 (1)
- Lacunary Keggin ion (1)
- Ladder sequencing (1)
- Lasalocid (1)
- Laser Ablation (1)
- Laser ablation-inductively coupled plasma-mass spectrometry (1)
- Laser ablation-inductively coupled plasma-mass spectroscopy (1)
- Laser induced breakdown Spectrocopy (LIBS) (1)
- Laser induced breakdown spectroscopy (1)
- Laser induced plasma (1)
- Laser induced plasma deposition (1)
- Laser powder bed fusion (1)
- Laser-induced breakdown spectroscopy (1)
- Laser-induced dielectric breakdown (LIDB) (1)
- Laser-induced fluorescence (1)
- Lastwechsel (1)
- Layer-by-Layer (1)
- Layers (1)
- Leaching (1)
- Lead (1)
- Legacy pollution (1)
- LiYF4 (1)
- Library (1)
- Life science (1)
- Lifetime encoding (1)
- Lifetime-encoded beads (1)
- Light chain (1)
- Light chains (1)
- Light harvesting (1)
- Limit of detection (1)
- Lipidomics (1)
- Lipids (1)
- Liver X receptor (1)
- Lluminescence (1)
- Longst luminescence lifetime (1)
- Low-cost (1)
- Low-energy electrons (1)
- Luminescent lifetime (1)
- Luminol (1)
- Lymnaea stagnalis (1)
- Lysergic acid hydrazide (1)
- Lysosome (1)
- MALDI-TOF-MS (1)
- MC-TIMS (1)
- MCR (1)
- MIC (1)
- MICAP-MS (1)
- MIP (1)
- MLCT (1)
- MOF´s (1)
- MR Angiography (1)
- MR imaging (1)
- MST (1)
- MW-AES (1)
- MYCN (1)
- Machine learning (1)
- Macrophages (1)
- Magnesium (1)
- Magnesium carbonates (1)
- Magnetic (1)
- Magnetic nanocatalyst (1)
- Magnetpartikel (1)
- Mass-Spectrometry (1)
- Massenspektrometrie (1)
- Material sciences (1)
- Materials informatics (1)
- Mechanical properties (1)
- Medical diagnostics (1)
- Medicinal application (1)
- Medicine (1)
- Medium entropy alloy (1)
- MefHySto (1)
- Mercury speciation (1)
- Meso Portland cement (1)
- Mesofluidics (1)
- Mesoporous particles (1)
- Metabolic Flux (1)
- Metabolization (1)
- Metal cluster (1)
- Metal toxicity (1)
- Metal uptake (1)
- Metalloprotein (1)
- Metals (1)
- Metal−organic frameworks (1)
- Methanol oxidation (1)
- Methylanilines (1)
- Methylmercury (1)
- Metrologie (1)
- Metrology in chemistry (1)
- Microbe interactions (1)
- Microfluidic (1)
- Microfluidic mixing (1)
- Microfluidic system (1)
- Micrometeorites (1)
- Microorganism (1)
- Microplastic-induced effects (1)
- Microplatic (1)
- Microscope slides (1)
- Microwave inductively coupled atmospheric pressure mass spectrometry (MICAP-MS) (1)
- Microwave-assisted synthesis (1)
- Miller and Urey (1)
- Mineral identification (1)
- Mineral paragenesis (1)
- Miniaturization (1)
- Missing fragmentation sites (1)
- Mixed surface (1)
- Mixture toxicity (1)
- Mobile analytics (1)
- Mobile phase (1)
- Model Predictive Control (1)
- Modeling (1)
- Modified mycotoxins (1)
- Modifier adaptation (1)
- Molecular Biology (1)
- Molecular MRI (1)
- Molecular Organic Frameworks (1)
- Molecular imprinted polymers (1)
- Molecular marker (1)
- Molecular spectra (1)
- Molecular-MRI (1)
- Molecule (1)
- Monensin (1)
- Monoclonal Antibody (1)
- Monoclonal antibodies (1)
- Monolith (1)
- Monomer (1)
- Monte Carlo algorithm (1)
- Mounting media (1)
- Multi-collector inductively coupled plasma-mass spectrometry (ICP-MS) (1)
- Multi-element analysis (1)
- Multi-prinicpal element alloys (MPEAs) (1)
- Multiple sclerosis (1)
- Multiple-injection sample-standard bracketing (1)
- Multiplexed assay (1)
- Multivariat (1)
- Multivariate (1)
- Multivariate data analysis (1)
- Multivariate methods (1)
- Murchison meteorite (1)
- NIR Spectroscopy (1)
- NIR dyes (1)
- NIR-I (1)
- NIR-II fluorescence (1)
- NIST (1)
- NIST-mAb 8671 (1)
- NMR Spectroscopy (1)
- NMR spectroscopy (1)
- NMR-Spektroskopie (1)
- NSE (1)
- Nanaoparticle (1)
- Nanaoparticles (1)
- Nano-carrier (1)
- Nanocarrier (1)
- Nanolenses (1)
- Nanomaterial design (1)
- Nanoparticle characterization (1)
- Nanoparticle dimers (1)
- Nanopartikel (1)
- Nanopowder (1)
- Nanosafety (Safe-by-design) (1)
- Nanoscience (1)
- Nanosciences (1)
- Nanostructures (1)
- Naphthalene (Nap) (1)
- Narcotics (1)
- Neoallergen (1)
- Neoepitopes (1)
- Neural networks (1)
- Neutral dyes (1)
- Nickel chelate (1)
- Nitrogen dioxide (1)
- Nitrogen microwave inductively coupled atmospheric pressure mass spectrometry (1)
- Nitrogen monoxide (1)
- Nitrogen plasma (1)
- Non-targeted analysis (1)
- Nonspecific binding (NSB) (1)
- Nuclear Magnetic Resonance Spectroscopy (1)
- Nuclear receptor (1)
- Nucleocapsid (1)
- OBOC library (1)
- Ochratoxin A (1)
- Oil spills (1)
- Oligomerization (1)
- Oligonucleotides (1)
- On-chip screening (1)
- On-line CE/MC-ICP-MS (1)
- On-site detection (1)
- One-bead-one-compound library (1)
- Online NMR Spectroscopy (1)
- Online NMR spectroscopy (1)
- Online biosensor (1)
- Online detection (1)
- Ontologies (1)
- Open science (1)
- Optical assay (1)
- Optical imaging (1)
- Optically active surfaces (1)
- Organic Synthesis (1)
- Organic calibration solution (1)
- Organic contaminants (1)
- Organic-inorganic hybrid composites (1)
- Organic–inorganic nanostructures (1)
- Oriented immobilization (1)
- Osmotic minipumps (1)
- Oxidative metabolism (1)
- Oxygen evolution reaction (1)
- Oxygen isotope ratios (1)
- Oxygen sensitive (1)
- PAHs (1)
- PCA (1)
- PDT (1)
- PEM-Wasserelektrolyse (1)
- PIC technology (1)
- PLSR (1)
- PSA (1)
- Packing density (1)
- Pants (1)
- Partial least square discriminant analysis (PLS-DA) (1)
- Particle architecture (1)
- Particle synthesis (1)
- Pattern recognition receptor (1)
- Pd(II) (1)
- Peer review (1)
- Peptide aptamers (1)
- Peptide binder (1)
- Peptide folding (1)
- Peptide mass fingerprinting (1)
- Peptide probe (1)
- Peptides (1)
- Peptides and Proteins (1)
- Per- and Polyfluoroalkyl substances (PFAS) (1)
- Per- and polyfluorinated alkyl substances (PFASs) (1)
- Perfluorooctanoic Acid (PFOA) (1)
- Permethrin (1)
- Peroxidase (1)
- Perturbed-Chain Statistical Association Fluid Theory (1)
- Pesticide (1)
- Pestizid (1)
- Petroleum (1)
- Pflanzenvirus (1)
- Pflanzenwachstum (1)
- Ph (1)
- Pharmaceutical (1)
- Pharmaceutical Science (1)
- Phase Imaging (1)
- Phenanthrene (1)
- Phenothrin (1)
- Phenylketonuria (1)
- Phl p 5 (1)
- Phleum pratense (1)
- Phosphinine (1)
- Phospholipids (1)
- Phosphor (1)
- Phosphorescence (1)
- Phosphorus elimination (1)
- Phosphorus recovery (1)
- Photocatalysis (1)
- Photocatalytic reduction (1)
- Photochemistry (1)
- Photoinduced Electron Transfer (1)
- Photoinduced electron transfer (1)
- Photonic biosensor (1)
- Photosensitization (1)
- Photostability (1)
- Physical and theoretical chemistry (1)
- Physical twin (1)
- Physico-chemical characterisation of minerals (1)
- Phytoliths (1)
- Planck function (1)
- Plant virus (1)
- Plant-model mismatch (1)
- Plasma (1)
- Plasma chemistry (1)
- Plasmonic heating (1)
- Plastic deformation (1)
- Polarised light microscopy (1)
- Polarity (1)
- Polishing (1)
- Pollen (1)
- Pollen extract (1)
- Pollutant (1)
- Polyclonal Antibodies (1)
- Polycyclic aromatic hydrocarbons (1)
- Polyelektrolyt (1)
- Polyglycerol (1)
- Polymer particles (1)
- Polymer-based products (1)
- Polymere (1)
- Polymerization (1)
- Polymers (1)
- Polyoxometalates (1)
- Polystyrene microparticles (1)
- Pore fluids (1)
- Porous rock (1)
- Porphyrin (1)
- Portable (1)
- Portland clinker (1)
- Potash (1)
- Powder X-ray diffraction (1)
- Power density (1)
- Pphotophysics (1)
- Prebiotic chemistry (1)
- Precision agriculture (1)
- Precision farming (1)
- Preprocessing (1)
- Primary difference measurement method (PDM) (1)
- Primary transfer standards (PTSs) (1)
- Primordial soup (1)
- Principal component analysis (PCA) (1)
- Priority effect (1)
- Probe (1)
- Process Analytical Tecnology (1)
- Process Control (1)
- Process control (1)
- Process industry (1)
- Process intelligence (1)
- Process monitoring (1)
- Process sensors 4.0 (1)
- Programmed cell death (1)
- Proinflammatory cytokines (1)
- Protein Purification (1)
- Protein content (1)
- Protein degradation (1)
- Protein folding (1)
- Protein hydrolysis (1)
- Protein oligomerization (1)
- Protein oligomers (1)
- Protein quantification (1)
- Protein test (1)
- Protein-modification (1)
- Proteinoid (1)
- Prouess-Sensoren 4.0 (1)
- Provenance (1)
- Provenancing (1)
- Proximal soil sensing (1)
- Prozessanalytik (1)
- Prozesskontrolle (1)
- Pseudomonas aeruginosa (1)
- Pt(111) (1)
- Pt(II) (1)
- PtNP (1)
- Public Health, Environmental and Occupational Health (1)
- Purity (1)
- Quality assurancemechanism (1)
- Quality control (1)
- Quantitative Analysis (1)
- Quantitative determination (1)
- Quantitative protein analysis (1)
- Quantum chemistry (1)
- Quartz (1)
- R package (1)
- RBD (1)
- REMPI (1)
- Racemate (1)
- Rainwater (1)
- Raman band width (1)
- Raman microscopy (1)
- Raman-spectroscopy (1)
- Rapid test (1)
- Rapid tests (1)
- Rat/human liver microsomes (1)
- Ratiometric (1)
- Reactor control (1)
- Real-time imaging (1)
- Real-time quality control (1)
- Recombinant Antibody (1)
- Recombinant antibody (1)
- Recombinant protein (1)
- Redox (1)
- Redox switch (1)
- Reference (1)
- Reference Material (1)
- Reference Materials (1)
- Reference data (1)
- References (1)
- Reinigung (1)
- Reliability (1)
- Renal disease (1)
- Renewable copolymers (1)
- Replication (1)
- Replication crisis (1)
- Reporter (1)
- Reproducibility crisis (1)
- Resistance (1)
- Resonance wavelength shift (1)
- Reverse microemulsion (1)
- Reversible covalent hydrazine chemistry (RCHC) (1)
- Rheumatoid arthritis (1)
- Rhizopus (1)
- Rhizopus and Aspergillus oryzae (1)
- Rhodamine (1)
- Ring resonator (1)
- River water sulfate (1)
- Robustness (1)
- Rosamine (1)
- Roughness (1)
- Ruthenium(II) complexes (1)
- Rückverstromung (1)
- SA conjugates (1)
- SAXS (1)
- SBA-15 (1)
- SBA-16 (1)
- SEC (1)
- SEM (1)
- SERDS (1)
- SERS (1)
- SI Traceability (1)
- SIDA-LC-MS/MS (1)
- SKPFM (1)
- SOM-SM (1)
- SPR (1)
- SVOC (1)
- Safe by design (1)
- Salicylic acid (1)
- Salinomycin (1)
- Salts (1)
- Sample preparation (1)
- Scale anchor (1)
- Scale conversion (1)
- Scattering (1)
- Schlangenbohne (1)
- Schlieren Imaging (1)
- Schnelltest (1)
- Schnelltests (1)
- Scientific publication (1)
- Seawater (1)
- Security (1)
- Sediment (1)
- Segregation (1)
- Selenium (1)
- Self-absorption (1)
- Self-assembled monolayers (SAM) (1)
- Semiconductor (1)
- Semiconductor nanocrystals (1)
- Semiconductor quantum dot (1)
- Sensor Materials (1)
- Sensory particles (1)
- Separation (1)
- Sequence dependence (1)
- Sequencing (1)
- Sequencing algorithm (1)
- Shadowgraphy (1)
- Silanization (1)
- Silica and polystyrene nanoparticles (1)
- Silica coating (1)
- Silica diagenesis (1)
- Silicon (1)
- Silicon chlorides (1)
- Simulation (1)
- Single Cell (1)
- Single enhancement (1)
- Single particle ICP-MS (1)
- Single-cell analysis (1)
- Singlet oxygen (1)
- Sintered Material (1)
- Small-angle scattering (1)
- Smart actuators (1)
- Smart test laboratories (1)
- Smarte Aktoren (1)
- Smarte Sensoren (1)
- Smarter Sensor (1)
- Smartphone readout (1)
- Soil contact (1)
- Soil heterogeneity (1)
- Sol-gel process (1)
- Solar cells (1)
- Solar concentrator (1)
- Solar energy (1)
- Solid (1)
- Solid state (1)
- Solid state emission (1)
- Solid support (1)
- Solid-phase extraction (SPE) (1)
- Sorghum (1)
- Spark plasma sintering (1)
- Spatial heterodyne spectrometer (1)
- Special issue (1)
- Specific probe (1)
- Spectoscopic imaging (1)
- Spectrometer (1)
- Spectrometry (1)
- Spectroscopic imaging (1)
- Spectroscopy / Instrumentation (1)
- Spectroscopy / Theory (1)
- Speed of sound (1)
- Spike protein (1)
- Sr isotope analysis (1)
- SsNMR (1)
- Stability (1)
- Stabilization (1)
- Stable isotopes (1)
- Standard atomic weight (1)
- Stationäre Phase (1)
- Statistics (1)
- Steel (1)
- Stepwise growth (1)
- Stranski–Krastanow growth (1)
- Strontium isotope (1)
- Structural Biology (1)
- Structure-property relationship (1)
- Sub-4nm particles (1)
- Substance release (1)
- Sulfide sensing (1)
- Sulfur (1)
- Sulfur isotopes (1)
- Sulphur isotope (1)
- Sum Parameter (1)
- Sum Parameter Method (1)
- Sum parameter method (1)
- Supported catalyst (1)
- Supramolecular Chemistry (1)
- Surface Chemistry (1)
- Surface coating (1)
- Surface derivatization (1)
- Surface ligand (1)
- Surface plasmon resonance (1)
- Surface waters (1)
- Surface-enhanced Raman scattering (1)
- Surrogate citations (1)
- Sustainable Production (1)
- Suzuki coupling (1)
- Suzuki-Miyaura coupling (1)
- Swell-capture (1)
- Synchrotron FTIR (1)
- Synthetic peptides (1)
- TEM (1)
- TFA (1)
- TLR4 activation (1)
- Tantalum oxyfluorides (1)
- Target (1)
- Tau (1)
- Temperature (1)
- Temperature Control (1)
- Terephthalic acid (1)
- Terrorism (1)
- Test strip (1)
- Tetracyclin (1)
- Tetramethylammonium hydroxide (1)
- Theranostic (1)
- Therapeutic Antibodies (1)
- Thermal Process Engineering (1)
- Thermocouple (1)
- Thermodynamic analysis (1)
- Thermography (1)
- Thick shells (1)
- Thickness (1)
- Thin films (1)
- Tholins (1)
- Tissue (1)
- Titan-Halterung (1)
- Titanium dioxide (1)
- ToF-SIMS (1)
- Toll-like receptor 4 (1)
- Tomography (1)
- Topical collection: Analytical Methods and Applications in the Materials and Life Sciences (1)
- Total cyanide (1)
- Total element determination (1)
- Toxicity testing (1)
- Toys (1)
- Trace Analysis (1)
- Transferrin (1)
- Transformation (1)
- Transient signal (1)
- Transpassive dissolution (1)
- Trastuzumab (1)
- Trennung (1)
- Truffle (1)
- Trust (1)
- Tryptic digest (1)
- Tryptophan (1)
- Tutzing Symposion (1)
- Type-I pyrethroids (1)
- UV Vis (1)
- UV radiation (1)
- UV–Vis spectroscopy (1)
- Ultrasensitive (1)
- Umweltschadstoffe (1)
- Upconverion (1)
- Upconverstion (1)
- Upscaling (1)
- VO (1)
- VVOC (1)
- Validate method (1)
- Validation trial (1)
- Vanadium (1)
- Vanadium oxide catalysts (1)
- Vegetable edible oil (1)
- Veterinary drugs (1)
- Vigna unguiculata (1)
- Virial coefficients (1)
- Visualization (1)
- Vocabulary providers (1)
- Volatile organic compounds (1)
- Volatile organic compounds; (1)
- Volumetric uptake (1)
- Vor-Ort-Analytik (1)
- WD-XRF (1)
- WWTP (1)
- Warfarin (1)
- Wasser (1)
- Wasserstoff (1)
- Wasserstoff-Qualität (1)
- Wasserstoffspeicher (1)
- Wastewater (1)
- Water (1)
- Water contact (1)
- Whole water samples (1)
- Wipe test (1)
- Wood chips (1)
- Work function (1)
- X-Ray analysis (1)
- X-Ray fluorescence (1)
- X-ray (1)
- X-ray diffraction (1)
- X-ray spectroscopy (1)
- XANES (1)
- Yerba mate tea (1)
- Ytterbium (1)
- Zearalenone (1)
- Zearalenone sulfate (1)
- Zellulose (1)
- Zenodo (1)
- Zeolithe (1)
- Zinc (1)
- Zinc oxide (1)
- a-zearalenol (1)
- biokompatibel (1)
- calibration (1)
- compost (1)
- dye (1)
- gesintert (1)
- lank characterization (1)
- magnetic nanocatalysts (1)
- pH probe (1)
- photoluminescence (1)
- research landscape (1)
- self-replication (1)
- spICP-MS (1)
- species-specific isotope information (1)
- tandard addition (1)
- temperature (1)
- thermophysical properties (1)
- transmission mode (1)
- β-Lactam (1)
- γ-H2AX assay (1)
Organisationseinheit der BAM
- 1 Analytische Chemie; Referenzmaterialien (352) (entfernen)
Paper des Monats
- ja (11)
We report an analytical methodology for the quantification of sulfur in biological molecules via a speciesunspecific postcolumn isotope dilution (online ID) approach using capillary electrophoresis (CE) coupled online with inductively coupled plasma−mass spectrometry (online ID CE/ICP−MS).
The method was optimized using a mixture of standard compounds including sulfate, methionine, cysteine, cystine, and albumin, yielding compound recoveries between 98 and 105%. The quantity of sulfur is further converted to the quantity of the compounds owing to the prior knowledge of the sulfur content in the molecules. The limit of detection and limit of quantification of sulfur in the compounds were 1.3−2.6 and 4.1−8.4 mg L−1, respectively, with a correlation coefficient of 0.99 within the concentration range of sulfur of 5−100 mg L−1. The capability of the method was extended to quantify albumin in its native matrix (i.e., in serum) using experimentally prepared serum spiked with a pure albumin standard for validation. The relative expanded uncertainty of the method for the quantification of albumin was 6.7% (k = 2). Finally, we tested the applicability of the method on real samples by the analysis of albumin in bovine and human sera. For automated data assessment, a software application (IsoCor) which was developed by us in a previous work was developed further for handling of online ID data. The method has several improvements compared to previously published setups: (i) reduced adsorption of proteins onto the capillary wall owing to a special capillary-coating procedure, (ii) baseline separation of the compounds in less than 30 min via CE, (iii) quantification of several sulfur species within one run by means of the online setup, (iv) SI traceability of the quantification results through online ID, and (v) facilitated data processing of the transient signals using the IsoCor application. Our method can be used as an accurate approach for quantification of proteins and other biological molecules via sulfur analysis in complex matrices for various fields, such as environmental, biological, and pharmaceutical studies as well as clinical diagnosis.
Sulfur is an essential element in living organisms, where it plays important roles in various biological processes, such as protein synthesis, enzyme activity, and antioxidant defense. However, the biological effects of different sulfur species can vary widely, and imbalances in sulfur speciation have been observed in a range of diseases, including cancer, Alzheimer’s disease, and diabetes.1−3 The accurate quantification of sulfur and its species in biological samples requires sensitive and selective analytical techniques. In recent years, separation techniques coupled online with inductively coupled plasma−mass spectrometry (ICP−MS) have emerged as powerful online analytical tools complementary to molecular spectrometric methods for speciation analysis of biological compounds.
External calibration4−9 and isotope dilution (ID)10−15 are common calibration approaches applied for online quantification of sulfur species in complex samples. The ID analysis is advantageous over.
Plastic pollution is the biggest environmental concern of our time. Breakdown products like micro- and nanoplastics inevitably enter the food chain and pose unprecedented health risks. In this scenario, bio-based and biodegradable plastic alternatives have been given a momentum aiming to bridge a transition towards a more sustainable future. Polyhydroxyalkanoates (PHAs) are one of the few thermoplastic polymers synthesized 100 % via biotechnological routes which fully biodegrade in common natural environments. Poly(hydroxybutyrate-cohydroxyhexanoate) [P(HB-co-HHx)] is a PHA copolymer with great potential for the commodity polymers industry, as its mechanical properties can be tailored through fine-tuning of its molar HHx content. We have recently developed a strategy that enables for reliable tailoring of the monomer content of P(HB-co-HHx).
Nevertheless, there is often a lack of comprehensive investigation of the material properties of PHAs to evaluate whether they actually mimic the functionalities of conventional plastics. We present a detailed study of P(HB-co-HHx) copolymers with low to moderate hydroxyhexanoate content to understand how the HHx monomer content influences the thermal and mechanical properties and to link those to their abiotic degradation. By increasing the HHx fractions in the range of 2 – 14 mol%, we impart an extension of the processing window and application range as the melting temperature (Tm) and glass temperature (Tg) of the copolymers decrease from Tm 165 ◦C to 126 ◦C, Tg 4 ◦C to − 5.9 ◦C, accompanied by reduced crystallinity from 54 % to 20 %.
Elongation at break was increased from 5.7 % up to 703 % at 14 mol% HHx content, confirming that the range examined was sufficiently large to obtain ductile and brittle copolymers, while tensile strength was maintained throughout the studied range. Finally, accelerated abiotic degradation was shown to be slowed down with an increasing HHx fraction decreasing from 70 % to 55 % in 12 h.
Establishing ZIF‐8 as a reference material for hydrogen cryoadsorption: An interlaboratory study
(2024)
AbstractHydrogen storage by cryoadsorption on porous materials has the advantages of low material cost, safety, fast kinetics, and high cyclic stability. The further development of this technology requires reliable data on the H2 uptake of the adsorbents, however, even for activated carbons the values between different laboratories show sometimes large discrepancies. So far no reference material for hydrogen cryoadsorption is available. The metal‐organic framework ZIF‐8 is an ideal material possessing high thermal, chemical, and mechanical stability that reduces degradation during handling and activation. Here, we distributed ZIF‐8 pellets synthesized by extrusion to 9 laboratories equipped with 15 different experimental setups including gravimetric and volumetric analyzers. The gravimetric H2 uptake of the pellets was measured at 77 K and up to 100 bar showing a high reproducibility between the different laboratories, with a small relative standard deviation of 3–4 % between pressures of 10–100 bar. The effect of operating variables like the amount of sample or analysis temperature was evaluated, remarking the calibration of devices and other correction procedures as the most significant deviation sources. Overall, the reproducible hydrogen cryoadsorption measurements indicate the robustness of the ZIF‐8 pellets, which we want to propose as a reference material.
The emission of ultrafine particles from small desktop Fused Filament Fabrication (FFF) 3D printers has been frequently investigated in the past years. However, the vast majority of FFF emission and exposure studies have not considered the possible occurrence of particles below the typical detection limit of Condensation Particle Counters and could have systematically underestimated the total particle emission as well as the related exposure risks. Therefore, we comparatively measured particle number concentrations and size distributions of sub-4 nm particles with two commercially available diethylene glycol-based instruments – the TSI 3757 Nano Enhancer and the Airmodus A10 Particle Size Magnifier. Both instruments were evaluated for their suitability of measuring FFF-3D printing emissions in the sub-4 nm size range while operated as a particle counter or as a particle size spectrometer. For particle counting, both instruments match best when the Airmodus system was adjusted to a cut-off of 1.5 nm. For size spectroscopy, both instruments show limitations due to either the fast dynamics or rather low levels of particle emissions from FFF-3D printing in this range. The effects are discussed in detail in this article. The findings could be used to implement sub-4 nm particle measurement in future emission or exposure studies, but also for the development of standard test protocols for FFF-3D printing emissions.
Homochirality is an obvious feature of life on Earth. On the other hand, extraterrestrial samples contain largely racemic compounds. The same is true for any common organic synthesis. Therefore, it has been a perplexing puzzle for decades how these racemates could have formed enantiomerically enriched fractions as a basis for the origin of homochiral life forms. Numerous hypotheses have been put forward as to how preferentially homochiral molecules could have formed and accumulated on Earth. In this article, it is shown that homochirality of the abiotic organic pool at the time of formation of the first self-replicating molecules is not necessary and not even probable. It is proposed to abandon the notion of a molecular ensemble and to focus on the level of individual molecules. Although the formation of the first self-replicating, most likely homochiral molecule, is a seemingly improbable event, on a closer look, it is almost inevitable that some homochiral molecules have formed simply on a statistical basis. In this case, the non-selective leap to homochirality would be one of the first steps in chemical evolution directly out of a racemic “ocean”. Moreover, most studies focus on the chirality of the primordial monomers with respect to an asymmetric carbon atom. However, any polymer with a minimal size that allows folding to a secondary structure would spontaneously lead to asymmetric higher structures (conformations). Most of the functions of these polymers would be influenced by this inherently asymmetric folding. Furthermore, a concept of physical compartmentalization based on rock nanopores in analogy to nanocavities of digital immunoassays is introduced to suggest that complex cell walls or membranes were also not required for the first steps of chemical evolution. To summarize, simple and universal mechanisms may have led to homochiral self-replicating systems in the context of chemical evolution. A homochiral monomer pool is deemed unnecessary and probably never existed on primordial Earth.
Four donor-acceptor boron difluoride complexes based on the carbazole electron donor and the [1,3,5,2]oxadiazaborinino[3,4-a][1,8]naphthyridine acceptor were designed, synthesized, and systematically spectroscopically investigated in solutions, in the solid states, and dye-doped polymer films. The dyes exhibit an intense blue to red solid-state emission with photoluminescence quantum yields of up to 56% in pure dye samples and 86% in poly(methyl methacrylate) films. All boron complexes show aggregation-induced emission and reversible mechanofluorochromism. The optical properties of these dyes and their solid state luminescence can be tuned by substitution pattern, i.e., the substituents at the naphthyridine unit. Exchange of CH3- for CF3-groups does not only increase the intramolecular charge transfer character, but also provides a crystallization-induced emission enhancement.
With the reduction of large oil spills because of stricter regulations and safety measures, the question of how to manage smaller oil spills arises. Few on-site analytical tools are available for first responders or other law enforcement personnel to rapidly test for crude oil in the early management of localized polluted areas. The approach reported here relies on well-described computer-assisted multivariate data analysis of the intrinsic fluorescence fingerprints of crude oils to build a multivariate model for the rapid classification of crude oils and the prediction of their properties. Thanks to a dedicated robust portable reader, the method allowed classification and accurate prediction of various properties of crude oil samples like density (according to API, the American Petroleum Institute and viscosity as well as composition parameters such as volume fractions of paraffins or aromatics. In this way, autonomous operation in on-site or in-the-field applications becomes possible based on the direct (undiluted and untreated) measurement of samples and a rapid, tablet-operated readout system to yield a robust and simple analytical test with superior performance. Testing in real-life scenarios allowed the successful classification and prediction of a number of oil spill samples as well as weathered samples that closely resemble samples collected by first responders.
AbstractSince the 1950s, Warfarin has been used globally as both a prescription drug and a rodenticide. Research has shown that warfarin and other rodenticides are present in the environment and food chain. However, emerging contaminants are subject to degradation by biotic and abiotic processes and advanced oxidation processes. In some cases, detecting the parent compound may not be possible due to the formation of structurally changed species. This approach aims to identify hydroxylated transformation products of warfarin in a laboratory setting, even after the parent compound has undergone degradation. Therefore, the Fenton reaction is utilized to insert hydroxylation into the parent compound, warfarin, by hydroxyl and hydroperoxyl radicals generated by Fe2+/Fe3+ redox reaction with hydrogen peroxide. Using multiple reaction monitoring, a GC–MS/MS method, incorporating isotopically labeled reference compounds, is used to quantify the expected derivatized species. The analytes are derivatized using trimethyl-3-trifluoromethyl phenyl ammonium hydroxide, and the derivatization yield of warfarin is determined by using isotopically labeled reference compounds. The method has a linear working range of 30 to 1800 ng/mL, with detection limits ranging from 18.7 to 67.0 ng/mL. The analytes are enriched using a C18-SPE step, and the recovery for each compound is calculated. The Fenton reaction generates all preselected hydroxylated transformation products of warfarin. The method successfully identifies that 4′-Me-O-WAR forms preferentially under the specified experimental conditions. By further optimizing the SPE clean-up procedures, this GC–MS-based method will be suitable for detecting transformation products in more complex matrices, such as environmental water samples. Overall, this study provides a better understanding of warfarin’s degradation and offers a robust analytical tool for investigating its transformation products.
The processes of hydrogen reduction of silicon and germanium chlorides under the conditions of high-frequency (40.68 MHz) counteracted arc discharge stabilized between two rod electrodes are investigated. The main gas-phase and solid products of plasma-chemical transformations are determined. Thermodynamic analysis of SiCl4 + H2 and GeCl4 + H2 systems for optimal process parameters was carried out. Using the example of hydrogen reduction of SiCl4 by the method of numerical modeling, gas-dynamic and thermal processes for this type of discharge are investigated. The impurity composition of gas-phase and solid reaction products is investigated. The possibility of single-stage production of high-purity Si and Ge mainly in the form of compact ingots, as well as high-purity chlorosilanes and trichlorogermane, is shown.
Luminescence lifetimes are an attractive analytical method for detection due to its high sensitivity and stability. Iridium probes exhibit luminescence with long excited-state lifetimes, which are sensitive to the local environment. Perfluorooctanoic acid (PFOA) is listed as a chemical of high concern regarding its toxicity and is classified as a “forever chemical”. In addition to strict limits on the presence of PFOA in drinking water, environmental contamination from industrial effluent or chemical spills requires rapid, simple, accurate, and cost-effective analysis in order to aid containment. Herein, we report the fabrication and function of a novel and facile luminescence sensor for PFOA based on iridium modified on gold surfaces. These surfaces were modified with lipophilic iridium complexes bearing alkyl chains, namely, IrC6 and IrC12, and Zonyl-FSA surfactant. Upon addition of PFOA, the modified surfaces IrC6-FSA@Au and IrC12-FSA @Au show the largest change in the red luminescence signal with changes in the luminescence lifetime that allow monitoring of PFOA concentrations in aqueous solutions. The platform was tested for the measurement of PFOA in aqueous samples spiked with known concentrations of PFOA and demonstrated the capacity to determine PFOA at concentrations >100 μg/L (240 nM).