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dc.contributor.authorBengtson Nash, S.en_US
dc.contributor.authorPoulsen, A.en_US
dc.contributor.authorKawaguchi, S.en_US
dc.contributor.authorVetter, W.en_US
dc.contributor.authorSchlabach, M.en_US
dc.date.accessioned2017-04-24T13:17:48Z
dc.date.available2017-04-24T13:17:48Z
dc.date.issued2008en_US
dc.date.modified2014-04-01T05:34:25Z
dc.identifier.issn00489697en_US
dc.identifier.doi10.1016/j.scitotenv.2008.08.034en_US
dc.identifier.urihttp://hdl.handle.net/10072/33020
dc.description.abstractA baseline for persistent organohalogen compound (POC) accumulation in the Antarctic keystone species, Antarctic krill (Euphausia superba) has been established for a 50ࠬongitudinal range of the eastern Antarctic sector. Samples of adult krill, caught from 12 sites distributed between 30ࠡnd 80Š(60-70ө, were analysed for > 100 organohalogen compounds including chlorinated pesticides, polychlorinated biphenyls (PCBs), polybrominated organic compounds and polychlorinated dibenzo-p-dioxins/furans (PCDD/Fs). Organochlorine pesticides dominated measured krill contaminant burdens with hexachlorobenzene (HCB) as the single most abundant compound quantified. Krill HCB concentrations were comparable to those detected at this trophic level in both the Arctic and temperate northwest Atlantic, lending support for the hypothesis that HCB will approach global equilibrium at a faster rate than other POCs. Para, para'-dichlorodiphenylethene (p,p'-DDE) was detected at notable concentrations. Measurements of DDT and its degradation products provide an important baseline for monitoring the temporal and geographical influence of renewed, DDT usage for malaria-control in affected southern hemisphere countries. In contrast to the Arctic, PCBs did not feature prominently in contaminant burdens of Antarctic krill. The major commercial polybrominated diphenyl ether (PBDE) congeners -99 and -47 were quantified at low background levels with clear concentration spikes observed at around 70Š, in the vicinity of modern, active research stations. The likelihood that local anthropogenic activities are supplementing low PBDE levels, delivered otherwise primarily via long range environmental transport, is discussed. The suspected naturally occurring brominated organic compound, 2,4,6-tribromoanisole (TBA), was a ubiquitous contaminant in all samples whereas the only PCDD/Fs quantifiable were trace levels of octachlorodibenzo-p-dioxin (OCDD) and 1,2,3,4,7,8/1,2,3,4,7,9-hexachlorodibenzofuran (HxCDF). With the aims of; i) Generating a robust and broadly applicable POC auditing platform for the scarcely studied eastern Antarctic sector; ii) Determining the compounds accumulating in Antarctic krill for further toxicity evaluation studies and iii) Establishing a baseline for Antarctic predator exposure to POCs, this study represents one of the most comprehensive reports of POC contamination of the Antarctic food web to date.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherElsevieren_US
dc.publisher.placeNetherlandsen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom304en_US
dc.relation.ispartofpageto314en_US
dc.relation.ispartofissue1en_US
dc.relation.ispartofjournalScience of the Total Environmenten_US
dc.relation.ispartofvolume407en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchEnvironmental Sciences not elsewhere classifieden_US
dc.subject.fieldofresearchcode059999en_US
dc.titlePersistent Organohalogen Contaminant Burdens in Antarctic Krill (Euphausia superba) From the Eastern Antarctic Sector: A Baseline Studyen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.date.issued2008
gro.hasfulltextNo Full Text


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