Arsenic bioaccumulation and species in marine polychaeta
| Autor: | William A. Maher, Joel Waring |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
inorganic chemicals
Polychaete integumentary system biology Arsenate chemistry.chemical_element Arsenic Compound General Chemistry biology.organism_classification Inorganic Chemistry chemistry.chemical_compound chemistry Environmental chemistry Bioaccumulation Nereididae Arsenobetaine Arsenic Arsenite |
| Zdroj: | Applied Organometallic Chemistry. 19:917-929 |
| ISSN: | 1099-0739 0268-2605 |
| DOI: | 10.1002/aoc.938 |
| Popis: | Published whole tissue arsenic concentrations in polychaete species tissues range from 1.5–2739 µg arsenic/g dry mass. Higher mean total arsenic concentrations are found in deposit-feeding polychaetes relative to non-deposit-feeding polychaete species collected from the same locations. However, mean arsenic concentrations at some of the locations are skewed by the high arsenic concentrations of Tharyx marioni. There appears to be no direct correlation between sediment arsenic concentrations and polychaete arsenic concentrations. Arsenic bioaccumulation by polychaetes appears to be more controlled by the physiology of the polychaetes rather than exposure to arsenic via ingested material or the prevailing physiochemical conditions. Arsenic concentrations in polychaete tissues can vary greatly. Most polychaete species contain the majority of their arsenic as arsenobetaine (57–98%), with trace concentrations of inorganic arsenic ( |
| Databáze: | OpenAIRE |
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