4 Material und Umwelt
Filtern
Erscheinungsjahr
- 2018 (32) (entfernen)
Dokumenttyp
- Zeitschriftenartikel (32) (entfernen)
Referierte Publikation
- ja (32) (entfernen)
Schlagworte
- Bacteria (3)
- Fungi (3)
- Bioinformatics (2)
- Immunity (2)
- Phosphorus (2)
- Social (2)
- Soil (2)
- Virology (2)
- 3D printer (1)
- Alkylating agents (1)
- Antimicrobial (1)
- Antimicrobial test (1)
- Antiseptic agents (1)
- Aspergillus (1)
- BTEX (1)
- Beschichtung (1)
- Biofouling (1)
- Bioinformatics virology viruses software (1)
- Biosynthesis (1)
- Black fungi (1)
- Built environment (1)
- CEC-L-103 (1)
- Calibration transfer (1)
- Cannibalism (1)
- Chlorine (1)
- Cognitive performance (1)
- Conjugate (1)
- Corrosion (1)
- Cross-feeding (1)
- Cyanobacteria (1)
- DNA (1)
- DRIFTS (1)
- Decomposition point (1)
- Degradation (1)
- Denitrification (1)
- Dielectric heating (1)
- E. coli (1)
- Ecotoxicological tests (1)
- Ectoine (1)
- Emission (1)
- Entomopathogen (1)
- Environmental conditions (1)
- Exergie (1)
- Exocrine gland (1)
- Exposure (1)
- External (1)
- Extracellular enzymes (1)
- Fertilzer (1)
- Fusarium (1)
- GC-FID (1)
- Graphene (1)
- Graphene–bacteria interaction (1)
- Groundwater (1)
- Hospital premises (1)
- Hypopharynx (1)
- Idiopathic environmental intolerance (1)
- Indoor air quality (1)
- Indoor mycobiome (1)
- Inter-lab comparison (1)
- Isoptera (1)
- Knufia petricola (1)
- Kupfer (1)
- Labrum (1)
- Laser printer emission (1)
- Layer-by-Layer (1)
- MOF (1)
- MSWI fly ash (1)
- Magnesium (1)
- Melting point (1)
- Melting temperature (1)
- Metadata (1)
- Method development (1)
- Microwaves (1)
- Molecular Organic Frameworks (1)
- Molecular identification (1)
- Multi-scale study (1)
- Multiple chemical sensitivity (1)
- Mycotoxin (1)
- NAP-XPS (1)
- Nano-Fourier-transform infrared spectroscopy (1)
- NanoSIMS (1)
- Nitrous oxide (1)
- Non-invasive (1)
- Nonvolatile (1)
- Nostoc punctiforme (1)
- Nutrient acquisition (1)
- One-step ionic liquids synthesis (1)
- Open data (1)
- PV modules (1)
- Painting (1)
- Pest control (1)
- Phenotypic heterogeneity (1)
- Phototrophs (1)
- Pigment (1)
- Pollutant (1)
- Polyelektrolyt (1)
- Polypropylene (1)
- Polystyrene (1)
- Pot experiments (1)
- Prospective risk assessment (1)
- Proteome (1)
- Radio waves (1)
- Real-time qPCR (1)
- Reference organisms (1)
- Rhizopus (1)
- Rhizosphere effect (1)
- Rostasche (1)
- Scattering-type scanning near-field optical microscopy (s-SNOM) (1)
- Secondary P-fertilizer (1)
- Selective quantification (1)
- Sequence annotation (1)
- Sewage sludge ash (1)
- Silicon carbide (1)
- Software (1)
- Solar panels (1)
- Soldier (1)
- Sorption (1)
- Standardisation (1)
- Stoichiometric homeostasis (1)
- Subjective complaints (1)
- Surface water (1)
- Synchrotron radiation (1)
- Systematics (1)
- Targeted and nontargeted (1)
- Taxonomy (1)
- Termitoidae (1)
- Thermal treatment (1)
- Thermodynamic (1)
- Ultrafine particles (1)
- Ultrastructure (1)
- VOC (1)
- Viruses (1)
- Volatile organic compounds (1)
- Wood protection (1)
- X-ray absorption near-edge structure (XANES) spectroscopy (1)
- XPS (1)
- ZIF (1)
- Zearalenone (1)
- Zeolithe (1)
Organisationseinheit der BAM
- 4 Material und Umwelt (32)
- 4.1 Biologische Materialschädigung und Referenzorganismen (13)
- 4.0 Abteilungsleitung und andere (10)
- 1 Analytische Chemie; Referenzmaterialien (4)
- 4.2 Material-Mikrobiom Wechselwirkungen (4)
- 4.4 Thermochemische Reststoffbehandlung und Wertstoffrückgewinnung (4)
- 6 Materialchemie (4)
- 1.7 Organische Spuren- und Lebensmittelanalytik (3)
- 4.3 Schadstofftransfer und Umwelttechnologien (3)
- 5 Werkstofftechnik (2)
In this work, we use a gas sensor system consisting of a commercially available gas sensor in temperature cycled operation. It is trained with an extensive gas profile for detection and quantification of hazardous volatile organic compounds (VOC) in the ppb range independent of a varying background of other, less harmful VOCs and inorganic interfering gases like humidity or hydrogen. This training was then validated using a different gas mixture generation apparatus at an independent lab providing analytical methods as reference. While the varying background impedes selective detection of benzene and naphthalene at the low concentrations supplied, both formaldehyde and total VOC can well be quantified, after calibration transfer, by models trained with data from one system and evaluated with data from the other system. The lowest achievable root mean squared errors of prediction were 49 ppb for formaldehyde (in a concentration range of 20–200 ppb) and 150 μg/m³ (in a concentration range of 25–450 μg/m³) for total VOC. The latter uncertainty improves to 13 μg/m³ with a more confined model range of 220–320 μg/m³. The data from the second lab indicate an interfering gas which cannot be detected analytically but strongly influences the sensor signal. This demonstrates the need to take into account all sensor relevant gases, like, e.g., hydrogen and carbon monoxide, in analytical reference measurements.
Construction products are in contact with water (e.g., rain, seepage water) during their service lifetime and may release potentially harmful compounds by leaching processes. Monitoring studies showed that compounds attributed to construction products are found in storm water and the receiving bodies of water and that the release of biocides in urban areas can be comparable to the input of pesticides from agricultural uses. Therefore, a prospective risk assessment of such products is necessary. Laboratory leaching tests have been developed by the Technical Committee CEN/TC 351 and are ready to use. One major task in the future will be the evaluation of the leaching test results, as concentrations found in laboratory experiments are not directly comparable to the field situations. Another Task will be the selection of compounds to be considered for construction products, which are often a complex mixture and contain additives, pigments, stabilization agents, etc. The formulations of the products may serve as a starting point, but total content is a poor predictor for leachability, and analysis of the eluates is necessary. In some cases, nontargeted approaches might be required to identify compounds in the eluates. In the identification process, plausibility checks referring to available information should be included. Ecotoxicological tests are a complementary method to test eluates, and the combined effects of all compounds—including Degradation products—are included. A bio test battery has been applied in a round robin test and was published in a guidance document. Published studies on the ecotoxicity of construction products show the tests’ suitability to distinguish between products with small and larger effects on the environment.