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Titolo:
The marine polychaete Arenicola marina: its unusual arsenic compound pattern and its uptake of arsenate from seawater
Autore:
Geiszinger, AE; Goessler, W; Francesconi, KA;
Indirizzi:
Karl Franzens Univ Graz, Inst Chem, A-8010 Graz, Austria Karl Franzens Univ Graz Graz Austria A-8010 t Chem, A-8010 Graz, Austria Univ So Denmark, Inst Biol, DK-5230 Odense M, Denmark Univ So Denmark Odense Denmark M k, Inst Biol, DK-5230 Odense M, Denmark
Titolo Testata:
MARINE ENVIRONMENTAL RESEARCH
fascicolo: 1, volume: 53, anno: 2002,
pagine: 37 - 50
SICI:
0141-1136(200202)53:1<37:TMPAMI>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
SHRIMP CRANGON-CRANGON; MUSSEL MYTILUS-EDULIS; TERRESTRIAL ORGANISMS; ACCUMULATION; SPECIATION; WATER; ENVIRONMENT; METABOLISM; SURVIVAL; AUSTRIA;
Keywords:
Arenicola marina; polychaete; accumulation of arsenic; arsenic compounds; biotransformation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Geiszinger, AE Karl Franzens Univ Graz, Inst Chem, Univ Pl 1, A-8010 Graz,Austria Karl Franzens Univ Graz Univ Pl 1 Graz Austria A-8010 tria
Citazione:
A.E. Geiszinger et al., "The marine polychaete Arenicola marina: its unusual arsenic compound pattern and its uptake of arsenate from seawater", MAR ENV RES, 53(1), 2002, pp. 37-50

Abstract

Arsenic compounds in the marine polychaete Arenicola marina collected fromOdense Fjord, Denmark were determined by HPLC-ICPMS. In contrast to most other marine animals, A. marina contained most of its water soluble arsenic as inorganic forms, arsenite (58%) and arsenate (16%), and arsenobetaine was present as a minor constituent (6%) only. Other arsenic compounds detected in A. marina were dimethylarsinate (4%), two arsenosugars (1 and 3%), tetramethylarsonium ion (1.5%), and arsenocholine (< 1%). A new arsenobetaine-trimethylarsoniopropionate-previously only reported in fish, was also present at trace levels (<1%), and an unknown anionic arsenical (similar to 10%)remains unidentified. When A. marina was exposed in laboratory experimentsto different concentrations of arsenate in seawater (10, 50, 100, 500 and 1000 mug As 1(-1)) the polychaetes accumulated arsenic in a dose dependent,non-linear manner. Most of the accumulated arsenic was biotransformed to arsenite and dimethylarsinate, with the remainder being accumulated as unchanged arsenate. None of the other arsenic compounds naturally present in A. marina increased in concentration following arsenate exposure. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/02/20 alle ore 11:35:40