Arsenic in freshwater systems: Influence of eutrophication on occurrence, distribution, speciation, and bioaccumulation

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dc.contributor.author Azizur Rahman, M
dc.contributor.author Hasegawa, H
dc.date.accessioned 2012-10-12T03:33:29Z
dc.date.issued 2012-01
dc.identifier.citation Applied Geochemistry, 2012, 27 (1), pp. 304 - 314
dc.identifier.issn 0883-2927
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/18167
dc.description.abstract Arsenic exists in a variety of chemical forms, and microbial metabolism results in the occurrence of thermodynamically unstable arsenite (As III) and methylarsenic compounds in freshwaters (rivers and lakes). The inorganic forms (As V and As III) and the methylated forms (methylarsonic acid; MMAA V and dimethylarsinic acid; DMAA V) are the main species of As in freshwaters while the bulk of the total dissolved As is inorganic species. Although the predominant forms of methylarsenic compounds are consistently DMAA V followed by MMAA V, the DMAA III and MMAA III species have also been found in freshwaters. Several observations have revealed that phytoplankton activities are responsible for the seasonal variations of methylarsenic compounds in freshwaters. Although it was unclear if the occurrences of methylarsenic compounds were from the breakdown of larger molecules or the end-products of phytoplankton biosynthesis, recent studies have revealed that less toxic As-glutathione complexes are intermediates in the biosynthesis of organoarsenic compounds by phytoplankton. Recent studies have also revealed that eutrophication plays an important role in the production, distribution, and cycling of methylarsenic compounds in freshwaters. In this review, the recent reports on the influence of eutrophication on distribution, speciation, and bioaccumulation in freshwaters are discussed. © 2011 Elsevier Ltd.
dc.language eng
dc.relation.hasversion Accepted manuscript version en_US
dc.relation.isbasedon 10.1016/j.apgeochem.2011.09.020
dc.title Arsenic in freshwater systems: Influence of eutrophication on occurrence, distribution, speciation, and bioaccumulation
dc.type Journal Article
dc.parent Applied Geochemistry
dc.journal.volume 1
dc.journal.volume 27
dc.journal.number 1 en_US
dc.publocation Oxford, UK en_US
dc.identifier.startpage 304 en_US
dc.identifier.endpage 314 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0502 Environmental Science and Management
dc.personcode 112851
dc.percentage 100 en_US
dc.classification.name Environmental Science and Management en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Environmental Science
utslib.copyright.status Open Access
utslib.copyright.date 2015-04-15 12:23:47.074767+10
pubs.consider-herdc true
utslib.collection.history General (ID: 2)
utslib.collection.history School of the Environment (ID: 344)


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