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Journal: Chemosphere

Abbreviation

Chemosphere

Publisher

Elsevier

Journal Volumes

ISSN

0045-6535
1879-1298

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Publications 1 - 10 of 88
  • LinA2, a HCH-converting bacterial enzyme that dehydrohalogenates HBCDs
    Item type: Journal Article
    Heeb, Norbert V.; Wyss, Simon A.; Geueke, Birgit; et al. (2014)
    Chemosphere
  • Life cycle human toxicity assessment of pesticides
    Item type: Journal Article
    Juraske, Ronnie; Mutel, Christopher L.; Stoessel, Franziska; et al. (2009)
    Chemosphere
  • Isobutoxypentabromocyclododecanes (iBPBCDs)
    Item type: Journal Article
    Heeb, Norbert V.; Graf, Heidi; Schweizer, W. Bernd; et al. (2010)
    Chemosphere
  • Photooxidation of naphthalenesulfonic acids
    Item type: Journal Article
    Sanchez-Polo, M.; Rivera-Utrilla, J.; Mendez-Diaz, J.D.; et al. (2007)
    Chemosphere
  • The role of analytical chemistry in exposure science: Focus on the aquatic environment
    Item type: Review Article
    Hernández, Felix; Bakker, Joop F.; Bijlsma, Lubertus; et al. (2019)
    Chemosphere
  • Regio- and stereoselective isomerization of hexabromocyclododecanes (HBCDs): Kinetics and mechanism of gamma- to alpha-HBCD isomerization
    Item type: Journal Article
    Heeb, Norbert V.; Schweizer, W. Bernd; Mattrel, Peter; et al. (2008)
    Chemosphere
  • The first balloon-borne sample analysis of atmospheric carbonaceous components reveals new insights into formation processes
    Item type: Journal Article
    Benoit, Roland; Vernier, Hazel; Vernier, Jean-Paul; et al. (2023)
    Chemosphere
    Atmospheric aerosol optical, physical, and chemical properties play a fundamental role in the Earth's climate system. A better understanding of the processes involved in their formation, evolution, and interaction with radiation and the water cycle is critical. We report the analysis of atmospheric molecules/particles collected with a new sampling system that flew under regular weather balloons for the first time. The flight took place on January 18, 2022 from Reims (France). The samples were subsequently analyzed by high-resolution mass spectrometry (Orbitrap) to specifically infer hundreds of organic components present in 4 different layers from the troposphere to the stratosphere (up to 20 km). Additional measurements of O3, CO, and aerosol concentrations a few hours before this flight took place to contextualize the sampling. After separating common species found on each filter that might be common to atmospheric layers or residuals for contaminations, we found that each sample yields significant differences in the number and size of organic species detected that should reflect the unique composition of atmospheric layers. While tropospheric samples yield significantly oxidized and saturated components, with carbon numbers below 30 that might be explained by complex organics chemistry from local and distant source emissions, the upper tropospheric and stratospheric samples were associated with increased carbon numbers (C > 30), with a significantly reduced unsaturation number for the stratosphere, that might be induced by strong UV radiations. The multimodal distributions of carbon numbers in chemical formulas observed between 15 and 20 km suggest that oligomerization and growth of organic molecules may take place in aged air masses of tropical origin that are known to carry organic compounds even several km above the tropopause where their lifetime significantly increases. In addition, the presence of organics may also reflect the extended influence of wildfires smoke injected during the spring and summer in the NH hemisphere before the in situ observations and their long-lifetime in the upper troposphere and stratosphere.
  • Emissions of OTNE (Iso-E-super) - Mass flows in sewage treatment plants
    Item type: Journal Article
    Bester, Kai; Klasmeier, Joerg; Kupper, Thomas (2008)
    Chemosphere
  • Assessing the persistence, bioaccumulation potential and toxicity of brominated flame retardants: Data availability and quality for 36 alternative brominated flame retardants
    Item type: Conference Paper
    Stieger, Gerta; Scheringer, Martin; Ng, Carla A.; et al. (2014)
    Chemosphere
    Polybrominated diphenylethers (PBDEs) and hexabromocyclododecane (HBCDD) are major brominated flame retardants (BFRs) that are now banned or under restrictions in many countries because of their persistence, bioaccumulation potential and toxicity (PBT properties). However, there is a wide range of alternative BFRs, such as decabromodiphenyl ethane and tribromophenol, that are increasingly used as replacements, but which may possess similar hazardous properties. This necessitates hazard and risk assessments of these compounds. For a set of 36 alternative BFRs, we searched 25 databases for chemical property data that are needed as input for a PBT assessment. These properties are degradation half-life, bioconcentration factor (BCF), octanol–water partition coefficient (Kow), and toxic effect concentrations in aquatic organisms. For 17 of the 36 substances, no data at all were found for these properties. Too few persistence data were available to even assess the quality of these data in a systematic way. The available data for Kow and toxicity show surprisingly high variability, which makes it difficult to identify the most reliable values. We propose methods for systematic evaluations of PBT-related chemical property data that should be performed before data are included in publicly available databases. Using these methods, we evaluated the data for Kow and toxicity in more detail and identified several inaccurate values. For most of the 36 alternative BFRs, the amount and the quality of the PBT-related property data need to be improved before reliable hazard and risk assessments of these substances can be performed.
  • Soot sorption of non-ortho and ortho substituted PCBs
    Item type: Journal Article
    Bucheli, Thomas D.; Gustafsson, Örjan (2003)
    Chemosphere
Publications 1 - 10 of 88