Identification of 4-hydroxyheptachlorostyrene in polar bear plasma and its binding affinity to transthyretin: a metabolite of octachlorostyrene?

Article Abstract:

Researchers from Canada and The Netherlands identified the 4-hydroxyheptachlorostyrene compound through mass spectrometry as a major component of chlorinated phenolic compound fraction of polar bear plasma.

Netherlands, Plastics Material and Resin Manufacturing, Plastics materials and resins, Chlorinated Plastics, Health aspects, Usage, Brief Article, Plastics, Mass spectrometry

---

Influence of chemical and biological factors on trophic transfer of persistent organic pollutants in the northwater polynya marine food web

Article Abstract:

The effects of biological and chemical factors on trophic transfer of persistent organic pollutants (POPs) in an Arctic marine food web was undertaken by measuring POPs and stable isotopes of nitrogen (Omega (super 15) N) in six species of zooplankton, a benthic invertebrate, Arctic cod, and other species. The results of the study are discussed and tabulated.

United States, Water Pollution Control R&D, Organic water pollutants, Organic water pollution, Water pollution research, Arctic Ocean

---

Biotransformation versus bioaccumulation: sources of methyl sulfone PCB and 4,4'-DDE metabolites in the Polar bear food chain

Article Abstract:

Methyl sulfone polychlorinated biphenyls (PCBs) and 4,4'-DDE metabolites were detected in arctic cod in very low level at <0.01 ng/g, lipid wt. in the polar bear food chain from the Canadian Arctic. Bioaccumulation/formation efficiencies relative to CB153 (BFE-) from cod to seal were found to be 0.001-0.086 for MeSO2-PCBs and 0.004 for 3-MeSO2-4,4'-DDE. Methyl sulfone PCBs demonstrate high biomagnification potential in food chains.

Industrial Organic Chemicals, Biochemistry NEC, Polychlorinated Biphenyls, Cyclic Crude and Intermediate Manufacturing, Biochemistry, Bioaccumulation

Similar abstracts:

• Abstracts: Enantioselective breakdown of alpha-hexachlorocyclohexane in a small Arctic Lake and its watershed. Degradation as a Loss Mechanism in the Fate of A-Hexachlorocyclohexane in Arctic Watersheds
• Abstracts: Biophysical mechanisms of trichloroethene uptake and loss in baldcypress growing in shallow contaminated groundwater
• Abstracts: Changes in the chemical structure of municipal solid waste during composting as studied by solid-state dipolar dephasing and PSRE 13C NMR and solid-state 15N NMR spectroscopy
• Abstracts: Cleaning the air: using scientific information to regulate reformulated fuels. Will ethanol-blended gasoline affect groundwater quality?

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.