4 Material und Umwelt
Filtern
Dokumenttyp
- Vortrag (77)
- Zeitschriftenartikel (43)
- Posterpräsentation (24)
- Beitrag zu einem Tagungsband (17)
- Sonstiges (5)
- Forschungsbericht (4)
- Monografie (1)
- Buchkapitel (1)
- Forschungsdatensatz (1)
Schlagworte
- Nano (29)
- OECD (20)
- Nanomaterial (14)
- VOC (13)
- Bauprodukte (12)
- Emission (9)
- Prüfrichtlinie (9)
- Volatile organic compounds (8)
- Aerosol (7)
- BEMMA (7)
- Cascade impactor (7)
- ISO 16000-6 (7)
- Nanopartikel (7)
- EN 16516 (6)
- Geruch (6)
- TXRF (6)
- Emissionen (5)
- Museum (5)
- Nanomaterials (5)
- Nanoparticle (5)
- Reference material (5)
- Test guideline (5)
- Umweltsimulation (5)
- VVOCs (5)
- Analytical method (4)
- Architecture (4)
- Bundesoberbehörden (4)
- Chemical durability (4)
- Construction products (4)
- Corrosion (4)
- Emission test chamber (4)
- Formaldehyd (4)
- Gas chromatography (4)
- Guideline (4)
- Standardisation (4)
- Thermal desorption (4)
- UFP (4)
- Affinity chromatography (3)
- Air quality monitoring (3)
- Antibodies (3)
- ESEM (3)
- Electron microscopy (3)
- FFF-3D-Printer (3)
- Geruchsmessung (3)
- Glass (3)
- Low melting (3)
- Luftschadstoffe (3)
- Particle size distribution (3)
- Partikel (3)
- Perceived Intensity (3)
- Polyglycerol (3)
- Reference materials (3)
- Size (3)
- VOC-emission (3)
- Weathering (3)
- Additive Fertigung (2)
- Additive Manufacturing (2)
- Additive Manufacturing (AM) (2)
- Aerosol measurements (2)
- Aerosole (2)
- Air exchange rate (2)
- Ambient aerosols (2)
- Analytik (2)
- Behördenklausurtagung (2)
- Bewitterung (2)
- Biofilm (2)
- Biofilms (2)
- CO2 assisted impregnation (2)
- Capsules (2)
- Chamber test (2)
- Chemical analysis (2)
- Chemical characterization (2)
- Consumer products (2)
- Corona (2)
- Crystallization (2)
- DIN EN 16516 (2)
- Elektronisches Laborbuch (2)
- Element mass concentration (2)
- Emission chamber (2)
- Emission reference material (2)
- Emissions (2)
- Emissionskammer (2)
- Environmental simulation (2)
- European standard (2)
- FEM model (2)
- Fluorescence (2)
- Formaldehyde (2)
- Fume (2)
- GAeF (2)
- Glasmalfarben (2)
- Glutaraldehyde (2)
- Größenbestimmung (2)
- ICP-MS (2)
- Indoor air quality (2)
- Innenraum (2)
- Iron oxide nanoparticles (2)
- LA-ICP-MS (2)
- Laser Powder Bed Fusion (L-PBF) (2)
- Loading factor (2)
- Luft (2)
- MOF (2)
- Material emissions (2)
- Microbiome (2)
- Microplastics (2)
- Nano particle (2)
- Nanofasern (2)
- Nanomaterialien (2)
- Particle gas emission (2)
- Particle size (2)
- Particle size distributuion (2)
- Particles (2)
- Particulate emission (2)
- Plume (2)
- Pollutants (2)
- Prozessmonitoring (2)
- Purification (2)
- Radon (2)
- Reductive amination (2)
- Reference method (2)
- Round robin test (2)
- Sapphire (2)
- Schadstoffaustrag (2)
- Size distribution (2)
- Size resolved chemical composition (2)
- Spatter (2)
- Struvite (2)
- Test Guideline (2)
- Testguideline (2)
- Thermal extraction (2)
- Time resolved chemical composition (2)
- Total reflection X-ray spectroscopy (2)
- Ultrafine particles (2)
- VOC Emissionen (2)
- VOC-Emissionen (2)
- VVOC (2)
- Vitrinen (2)
- Wooden toys (2)
- 3D Printing (1)
- 3D printer (1)
- 3D printing (1)
- AEROMET II (1)
- AEROMET project (1)
- Accuracy (1)
- Additive manufacturing (1)
- Advanced Materials (1)
- Aerosol element alanysis (1)
- Aerosol element mass concentration (1)
- Aerosol gravimetry (1)
- Aerosol measurement instruments (1)
- Aerosol spectroscopy (1)
- Aerosolforschung (1)
- Aerosols (1)
- Aerosolsensor (1)
- Affinity extraction (1)
- Affinity support (1)
- AgBB Bewertung (1)
- Aging test (1)
- Aging tests (1)
- Air analysis (1)
- Air pollution (1)
- Air quality (1)
- Air sampling (1)
- Airborne Particles (1)
- Alkali zinc borate glass (1)
- Aluminium (1)
- Aluminum (1)
- Aluminum oxide (1)
- Ambient air (1)
- Ambient air pollution (1)
- Amino acid analysis (1)
- Ammoniak (1)
- Analytical chemistry (1)
- Analytische Methode (1)
- Anodization (1)
- Antibody purification (1)
- Aqueous synthesis (1)
- Architektur (1)
- Aromatic amino acid analysis AAAA (1)
- Aromatic amino acid analysis aaaa (1)
- BAM Data Store (1)
- BEMMA Bewertung (1)
- BFR (1)
- BMU (1)
- BODIPY dye (1)
- BSA (1)
- Bauproduktenverordnung (1)
- Beschichtung (1)
- Bewertung (1)
- Bewertungsverfahren (1)
- Bio-based insulation (1)
- Bio-weathering (1)
- Bioactive glass (1)
- Bioconjugation (1)
- Bioseparation (1)
- Biosphere (1)
- Black fungi (1)
- Blauer Engel (1)
- Blue Angel ecolabel (1)
- Bodenbelag (1)
- Bodenbeläge (1)
- Bovine serum albumin (1)
- Building product (1)
- Building products (1)
- Bürogeräte mit Druckfunktion (1)
- CCQM (1)
- COVID (1)
- CPC calibration (1)
- CRM (1)
- Calibration (1)
- Calibration transfer (1)
- Carrier (1)
- Cellulose ether (1)
- Cerium oxide (1)
- Chamber measurement (1)
- Characterisation (1)
- Characterization (1)
- Chemical composition (1)
- Chemische Beständigkeit (1)
- Climate responsive materials (1)
- Cobalt (1)
- Cognitive performance (1)
- Colored glasses (1)
- Comparison (1)
- Conservation (1)
- Construction Products (1)
- Construction product (1)
- Consumer article (1)
- Consumer articles (1)
- Core/shell nanoparticle (1)
- Corundum (1)
- Covid (1)
- Cross-sectioning (1)
- Cubical shape (1)
- DIN EN 717-1 (1)
- DMAS (1)
- Damage repair (1)
- Dendrimer (1)
- Diffusive sampling (1)
- Digitalisation (1)
- Digitalisierung (1)
- Dispay case (1)
- Dispergierung von Glaspartikeln (1)
- Dispersion of glass particle (1)
- Display case (1)
- Downstream processing (1)
- Druck (1)
- EDX Analysis (1)
- EN 717-1 (1)
- EN 717-3 (1)
- EU EMPIR (1)
- EU regulations (1)
- Earthen building materials (1)
- Effective uptake rate (1)
- Electronic Lab Notebook (ELN) (1)
- Electronic lab notebook (ELN) (1)
- Elektrolichtbogenofen (1)
- Element analysis (1)
- Elemental aerosol analysis (1)
- Elemental composition (1)
- Emerging Contaminants (1)
- Emission Test Chamber (1)
- Emission Testing (1)
- Emission chamber testing (1)
- Emission chambers (1)
- Emission reference materials (1)
- Emission test chamber procedure (1)
- Emission test method (1)
- Emissions of hazardous gases (1)
- Emissionsmessungen (1)
- Emissionsprüfkammer (1)
- Emissionsprüfung (1)
- Emisson testing (1)
- Enamel colors (1)
- Enamels (1)
- Environment (1)
- Environmental friendly (1)
- Exposure (1)
- Exposure risk (1)
- Extracellular pH (1)
- Extracellular polymeric substances (1)
- FFF-filament (1)
- FFF-printing (1)
- Faraday cup aerosol electrometer (1)
- Fatigue (1)
- Fiber (1)
- Fibre (1)
- Filament comparison (1)
- Flammschutzmittel (1)
- Flask method (1)
- Flexible shadow masks (1)
- Fluorometric sensing (1)
- Food (1)
- Forest fires (1)
- Forschungsdatenmanagement (1)
- Forschungsstrategie (1)
- Forsterite (1)
- Fungus (1)
- Gas analysis (1)
- Gas sensing (1)
- Gesundheit (1)
- Glas (1)
- Glasanalyse (1)
- Größe (1)
- Haze Samples (1)
- Heavy metal free (1)
- Historic buildings (1)
- Human plasma (1)
- Hyperbranched polymer (1)
- IAQ (1)
- IEQ (1)
- ISO REMCO (1)
- ISO/TC 229 Nanotechnologies (1)
- Idiopathic environmental intolerance (1)
- Igg (1)
- Immunoglobulins (1)
- Immunoprecipitation (1)
- In-situ Process Monitoring (1)
- In-situ analysis (1)
- Indoor Air Quality (1)
- Indoor Air: Adsorbent performance (1)
- Indoor Products (1)
- Indoor emission (1)
- Innenraumluft (1)
- Innenraumluftqualität (1)
- Innenraumluftqualtität (1)
- Inter-comparison (1)
- Inter-lab comparison (1)
- Intercomparison (1)
- Interlaboratory comparison (1)
- Iron oxide (1)
- Knock-out mutant (1)
- LCC (1)
- Lapis lazuli (1)
- Laser Printer (1)
- Laser printer emission (1)
- Layer-by-Layer (1)
- Linker (1)
- Low melting glasses (1)
- Low-tech approach (1)
- Luftgüte (1)
- Market surveillance (1)
- Mask fabrication (1)
- Material emissions testing (1)
- Mechanochemistry (1)
- Medieval glasses (1)
- Melanin Adhesion (1)
- Metallic silver precipitates (1)
- Metals (1)
- Methoden (1)
- Micro-XRF (1)
- Microchamber (1)
- Micropatterning (1)
- Migration (1)
- Mobile anodisation (1)
- Mobile application (1)
- Model aerosols (1)
- Molecular Organic Frameworks (1)
- Monoterpene (1)
- Multigassensorik (1)
- Multiple Displacement Amplification (1)
- Multiple chemical sensitivity (1)
- Museumsvitrine (1)
- Museumsvitrinen (1)
- NDT (1)
- NFDI (1)
- NGS (1)
- Nano CRM (1)
- Nano@BAM (1)
- NanoPlattform (1)
- Nanocarrier (1)
- Nanoparticles (1)
- Nanoplattform (1)
- Nanopowder (1)
- Nanosensor (1)
- Nanotechnologie (1)
- Neuartige Materialien (1)
- Nickel (1)
- Niedrig schmelzend (1)
- Non-destructive Materials (1)
- Nonspecific binding (NSB) (1)
- Novel sample preparation techniques (1)
- Oddy test (1)
- Odour (1)
- Office machines (1)
- Olivine (1)
- OpenBIS (1)
- Operating Procedure (1)
- Optical properties (1)
- Optische Tomografie (1)
- PBFSM (1)
- PGAA (1)
- PIXE (1)
- PM monitors (1)
- PP (1)
- PS (1)
- Particle (1)
- Particle Size (1)
- Particle emission (1)
- Particulate emissions (1)
- Partikeldurchmesser (1)
- Parylene C (1)
- Passive sampling (1)
- Periodate oxidation (1)
- Perowskit (1)
- Phase separation (1)
- Phosphates (1)
- Phosphonic acids (1)
- Phosphorous recovery (1)
- Phototrophic bacteria (1)
- Pigment analyses (1)
- Pilot comparison (1)
- Plastic biofilm (1)
- Plastic pollution (1)
- Polyelektrolyt (1)
- Polymer (1)
- Polypropylen (1)
- Polystyrol (1)
- Printing (1)
- ProMoAM (1)
- Process development (1)
- Process monitoring (1)
- Proficiency testing (1)
- Protein (1)
- Protein a (1)
- Protein hydrolysis (1)
- Protein immobilization (1)
- Protein quantification (1)
- Proton conductivity (1)
- Provenance studies (1)
- Prüfkammer (1)
- Prürfrichtlinie (1)
- QA/QC (1)
- Quality assurance (1)
- Quantum dot (1)
- REACH (1)
- RFA (1)
- Radon exhalation (1)
- Recovery rate (1)
- Recycling (1)
- Reduktionsprozess (1)
- Reference data (1)
- Reference nanoparticles (1)
- Reference procedures (1)
- Reference samples (1)
- Release kinetics (1)
- Research Data Infrastructure (1)
- Research Data Management (1)
- Research data management (1)
- Ringversuch (1)
- Robustness validation (1)
- Rround robin test (1)
- SARS (1)
- SAXS (1)
- SDS-PAGE (1)
- SMPS (1)
- SOP (1)
- Safety (1)
- Sample preparation (1)
- Schadgase (1)
- Schutzverglasung (1)
- Selective quantification (1)
- Self-assembled monolayer (SAM) (1)
- Self-assembled monolayers (SAM) (1)
- Semivolatile organic compounds (1)
- Sensor (1)
- Silver diffusion (1)
- Sintering (1)
- Small angle x-ray scattering (1)
- Solid phase (1)
- Solid-phase extraction (SPE) (1)
- Solvents (1)
- Spectroscopy (1)
- Spielzeug (1)
- Stained glasses (1)
- Standardarbeitsanweisungen (1)
- Subjective complaints (1)
- Surface chemistry (1)
- Sustainability (1)
- Synthesis (1)
- TEM (1)
- TXRF ambient air aerosol chemical analysis aerosol element composition (1)
- Tantal (1)
- Targeting, Nanoparticles (1)
- Test method (1)
- Thermal Desorption (1)
- Thermal Extraction (1)
- Thermal properties (1)
- Thermografie (1)
- Thermoplastic filaments (1)
- Transition metals (1)
- Transmission electron microscopy (1)
- Tyrosine (1)
- UV absorption (1)
- UV protection (1)
- Umweltmessung (1)
- Up-cycling (1)
- Uptake rate (1)
- VAMAS (1)
- VOC Emission (1)
- VOC emission (1)
- VOC transfer standards (1)
- VOC-Emission (1)
- Vitrine (1)
- Volatile organic compound (1)
- Volatile organic compounds (VOC) (1)
- WKI flask method (1)
- Weathering tests (1)
- Workflows (1)
- X-Ray analysis (1)
- XRF (1)
- ZIF (1)
- ZIF-8 (1)
- Zeolithe (1)
- Zinc oxide (1)
- natural ventilation (1)
- openBIS (1)
- pH (1)
- pH sensor (1)
- pHe (1)
- Äquivalenzdurchmesser (1)
Organisationseinheit der BAM
- 4.2 Material-Mikrobiom Wechselwirkungen (173) (entfernen)
Paper des Monats
- ja (3)
Nonporous corundum powder, known as an abrasive material in the industry, was functionalized covalently with protein binders to isolate and enrich specific proteins from complex matrices. The materials based on corundum were characterized by TEM, ESEM, BET, DLS, EDS, and zeta potential measurements. The strong Al-O-P bonds between the corundum surface and amino phosphonic acids were used to introduce functional groups for further conjugations. The common crosslinker glutaraldehyde was compared with a hyperbranched polyglycerol (PG) of around 10 kDa. The latter was oxidized with periodate to generate aldehyde groups that can covalently react with the amines of the surface and the amino groups from the protein via a reductive amination process. The amount of bound protein was quantified via aromatic amino acid analysis (AAAA). This work shows that oxidized polyglycerol can be used as an alternative to glutaraldehyde. With polyglycerol, more of the model protein bovine serum albumin (BSA) could be attached to the surface under the same conditions, and lower non-specific binding (NSB) was observed. As a proof of concept, IgG was extracted with protein A from crude human plasma. The purity of the product was examined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). A binding capacity of 1.8 mg IgG per gram of corundum powder was achieved. The advantages of corundum include the very low price, extremely high physical and chemical stability, pressure resistance, favorable binding kinetics, convenient handling, and flexible application.
Micro-(nano-)encapsulation technology involves building a barrier between the core and the environment and offers several benefits to preserve the functional and physicochemical properties of core material. Tremendous progress has been made in synthesizing well-defined capsules to achieve desired properties such as particle size, chemical composition, and controlled release of loaded compounds.
Encapsulation of volatile organic compounds (VOCs) that could evaporate with a defined rate is of immense interest for application in emission reference materials (ERM). These are urgently needed for quality assurance and quality control purposes (QA/QC) required by test standards for the determination of chemical emissions of construction and other materials for interior use. As such ERMs are hardly available on the market, the EU-funded EMPIR project MetrIAQ was started to fill this gap by developing a material with temporally constant emission of VOCs typically found in indoor air.
Data for the publication "The role of extracellular polymeric substances of fungal biofilms in mineral attachment and weathering" (https://doi.org/10.1038/s41529-022-00253-1). It includes:
- The Summary of the EPS concentration, EPS sugar components and EPS linkages.
- The Summary of the XPS analysis of freeze-dried biofilm samples of all strains.
- The Summary of the pH, Mg, SI and Fe concentration, biomass and olivine dissolution rate for each time point of all dissolution experiments.
Since 1997, the Committee for Health-related Evaluation of Building Products (AgBB) has been developing the basis for building regulations for protection against indoor health risks that may arise when building products are used. In 2009, the AgBB decided to include relevant VVOCs in the assessment procedure. The ISO 16000-6 (2021) states that the use of the thermal desorption gas chromatography technique is appropriate for VVOCs, if adaptations are considered. However, a suitable method for the trustworthy quantification of VVOC emissions from building products and in the indoor air is still missing.
This webinar will present the results of a research project on the development of a procedure for VVOC analysis:
• identification of the gaps towards standardization
• investigations on gas standards and the suitability of chromatography columns
• investigations on sorbent combinations and water management
• validation of the method and screening of VVOC emissions from building products.
The diversity of fused filament fabrication (FFF) filaments continues to grow rapidly as the popularity of FFF-3D desktop printers for the use as home fabrication devices has been greatly increased in the past decade. Potential harmful emissions and associated health risks when operating indoors have induced many emission studies. However, the lack of standardization of measurements impeded an objectifiable comparison of research findings. Therefore, we designed a chamber-based standard method, i.e., the strand printing method (SPM), which provides a standardized printing procedure and quantifies systematically the particle emission released from individual FFF-3D filaments under controlled conditions. Forty-four marketable filament products were tested. The total number of emitted particles (TP) varied by approximately four orders of magnitude (1E9 ≤ TP ≤ 1E13), indicating that origin of polymers, manufacturer-specific additives, and undeclared impurities have a strong influence. Our results suggest that TP characterizes an individual filament product and particle emissions cannot be categorized by the polymer type (e.g., PLA or ABS) alone. The user's choice of a filament product is therefore decisive for the exposure to released particles during operation. Thus, choosing a filament product awarded for low emissions seems to be an easily achievable preemptive measure to prevent health hazards.
Healthy and energy efficient buildings must be free from disturbing odours. Odour emissions from building materials can be measured with the well-known and accepted standard ISO 16000-28 “Indoor air – Part 28: Determination of odour emissions from building products using test chambers”. For commonly used emission test chambers the sample air is collected in containers (bags) and presented to a group of panel members for the purpose of evaluating the odour. A standard sets requirements for the on-demand presentation in detail. These include the validation procedure for container materials, pre-treatment of bags, details on storage of filled bags and how to carry out the measurements. However, although these measures are proven in practice, incorrect measurements are still possible. Also errors can occur due to a very complex measurement procedure. So, there is a great need for research into how the odour samples are presented.
The proposal planned to be presented will introduce a new development in sample provision by using an adapter which enables collection and provision of sample air without storage or transport of bags. The adapter is a sample container which is permanently positioned on the emission test chamber´s outlet and continuously filled with sample air flowing through it. The flow is briefly interrupted at the time when a sample is taken by a panel member for the test.
The size of the container is sufficient to provide enough sample air for evaluation by at least one panel member via a funnel. Since sampling and presentation are technically connected, it means you can almost do away with storage or transportation and thus it can be presented almost unchanged to the panelmembers. The aim is to reduce measurement errors in the odour samples provision process and the improvement of measurement reproducibility. The paper presents the construction of the adapter as well as the results of emission and odour tests carried out so far.
One criterion to evaluate the odour of a sample is perceived
intensity П which is evaluated with the aid of a comparative scale. The procedure is well accepted but also time consuming and extensive. The study should help simplify the testing procedure by asking the panel members to only indicate whether a sample is perceived as less to equally intense or of greater intensity in comparison to a given acetone concentration of 7 pi on the comparative scale. In Germany a value of 7 pi is required for products to be suitable for the indoor use. The results show that the simplified test is basically suitable.
BAM is currently building up a platform of novel nanoRMs relying on iron oxide nanoparticles of different shape, size and surface chemistry. Iron oxide was chosen as a core material because of its relevance to the material and life sciences.
As a first candidate of this series, we present cubic iron oxide nanoparticles with a nominal edge length of 8 nm. These particles were synthesized by thermal decomposition of iron oleate in high boiling organic solvents adapting well-known literature procedures. After dilution to a concentration suitable for electron microscopy (TEM and SEM) as well as for small-angle X-ray scattering (SAXS) measurements, the candidate nanoRM was bottled and assessed for homogeneity and stability by both methods following the guidelines of ISO 17034 and ISO Guide 35.
The particle sizes obtained by both STEM-in-SEM and TEM are in excellent agreement with a minimum Feret of 8.3 nm ± 0.7 nm. The aspect ratio (AR) of the iron oxide cubes were extracted from the images as the ratio of minimum Feret to Feret resulting in an AR of 1.18 for TEM to 1.25 for SEM. Alternatively, a rectangular bounding box was fitted originating from the minimum Feret and the longest distance through the particle in perpendicular direction. This led to AR values of 1.05 for TEM and 1.12 for SEM, respectively. The results confirm the almost ideal cubic shape.
Nonporous corundum powder, known as an abrasive material in the industry, was functionalized covalently with protein binders to isolate and enrich specific proteins from complex matrices. The materials based on corundum were characterized by TEM, ESEM, BET, DLS, and zeta potential measurements. The strong Al-O-P bonds between the corundum surface and amino phosphonic acids are used to introduce functional groups for further conjugations. The common cross-linker glutaraldehyde was compared with a hyperbranched polyglycerol (PG) of around 10 kDa. The latter is oxidized with periodate to generate aldehyde groups that can covalently react with the amines of the surface and the amino groups from the protein via a reductive amination process. The amount of bound protein was quantified via aromatic amino acid analysis (AAAA). This work shows that oxidized polyglycerol can be used as an alternative to glutaraldehyde. With polyglycerol, more of the model protein bovine serum albumin (BSA) could be attached to the surface under the same conditions, and lower nonspecific binding (NSB) was observed. As a proof of concept, IgG was extracted with protein A from crude human plasma. The purity of the product was examined by SDS-PAGE. A binding capacity of 1.8 mg IgG per g of corundum powder was achieved. The advantages of corundum are the very low price, extremely high physical and chemical stability, pressure resistance, favorable binding kinetics, and flexible application.
Mehrere Aspekte wurden im Hinblick auf die Standardisierung eines geeigneten Verfahrens für die Analyse sehr flüchtiger organischer Verbindungen (VVOCs) untersucht. Die Verwendung gasförmiger Standards ist notwendig und es wurde ein stabiles Standardgasgemisch aus 60 Substanzen erfolgreich erzeugt und auf Stabilität und Reaktivität überprüft. Die Eignungsuntersuchung verschiedener Chromatographiesäulen ergab, dass PLOT-Säulen (Porous Layer Open Tubular) für die VVOC-Analytik gut geeignet sind. Für die 60 Analyten wurden Wiederfindungsraten auf mehreren Adsorbenzien und deren Kombinationen bestimmt. Dabei zeigte eine Kombination aus einem graphitierten Ruß und einem Kohlenstoff-Molekularsieb hervorragende Ergebnisse für alle Zielkomponenten. Nachteilig an Kohlenstoff-Molekularsieben ist, dass sie Wasser adsorbieren, was die Analyse beeinträchtigen kann. Zur Wasserentfernung wurden verschiedene Optionen wie das Trockenspülen oder der Einsatz eines Trocknungssystems untersucht.