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Assessing the effects of seawater temperature and pH on the bioaccumulation of emerging chemical contaminants in marine bivalves

2018Journal article Restricted access
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dc.contributor.authorLuísa Maulvault, Ana
dc.contributor.authorCamacho, Carolina
dc.contributor.authorBarbosa, Vera
dc.contributor.authorAlves, Ricardo
dc.contributor.authorAnacleto, Patrícia
dc.contributor.authorFogaça, Fabiola
dc.contributor.authorKwadijk, Christiaan
dc.contributor.authorKotterman, Michiel
dc.contributor.authorCunha, Sara C.
dc.contributor.authorFernandes, José O.
dc.contributor.authorRasmussen, Rie R.
dc.contributor.authorSloth, Jens J.
dc.contributor.authorAznar-Alemany, Òscar
dc.contributor.authorEljarrat, Ethel
dc.contributor.authorBarceló, Damià
dc.contributor.authorMarques, António
dc.date.accessioned2020-01-19T20:50:05Z
dc.date.available2020-01-19T20:50:05Z
dc.date.issued2018
dc.description.abstractEmerging chemical contaminants [e.g. toxic metals speciation, flame retardants (FRs) and perfluorinated compounds (PFCs), among others], that have not been historically recognized as pollutants nor their toxicological hazards, are increasingly more present in the marine environment. Furthermore, the effects of environmental conditions (e.g. temperature and pH) on bioaccumulation and elimination mechanisms of these emerging contaminants in marine biota have been poorly studied until now. In this context, the aim of this study was to assess, for the first time, the effect of warmer seawater temperatures (Δ = + 4°C) and lower pH levels (Δ = - 0.4 pH units), acting alone or combined, on the bioaccumulation and elimination of emerging FRs (dechloranes 602, 603 and 604, and TBBPA), inorganic arsenic (iAs), and PFCs (PFOA and PFOS) in two estuarine bivalve species (Mytilus galloprovincialis and Ruditapes philippinarum). Overall, results showed that warming alone or combined with acidification promoted the bioaccumulation of some compounds (i.e. dechloranes 602, 604, TBBPA), but also facilitated the elimination of others (i.e. iAs, TBBPA). Similarly, lower pH also resulted in higher levels of dechloranes, as well as enhanced iAs, PFOA and PFOS elimination. Data also suggests that, when both abiotic stressors are combined, bivalves' capacity to accumulate contaminants may be time-dependent, considering significantly drastic increase observed with Dec 602 and TBBPA, during the last 10 days of exposure, when compared to reference conditions. Such changes in contaminants' bioaccumulation/elimination patterns also suggest a potential increase of human health risks of some compounds, if the climate continues changing as forecasted. Therefore, this first study pointed out the urgent need for further research on the effects of abiotic conditions on emerging contaminants kinetics, to adequately estimate the potential toxicological hazards associated to these compounds and develop recommendations/regulations for their presence in seafood, considering the prevailing environmental conditions expected in tomorrow's ocean.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.envres.2017.11.017pt_PT
dc.identifier.issn0013-9351
dc.identifier.urihttp://hdl.handle.net/10451/41213
dc.language.isoengpt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0013935117314767pt_PT
dc.subjectEmerging chemical contaminantspt_PT
dc.subjectFlame retardantspt_PT
dc.subjectToxic elementspt_PT
dc.subjectPerfluorinated compoundspt_PT
dc.subjectBioaccumulationpt_PT
dc.subjectWarmingpt_PT
dc.subjectAcidificationpt_PT
dc.titleAssessing the effects of seawater temperature and pH on the bioaccumulation of emerging chemical contaminants in marine bivalvespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage247pt_PT
oaire.citation.startPage236pt_PT
oaire.citation.titleEnvironmental Researchpt_PT
oaire.citation.volume161pt_PT
person.familyNameMaulvault
person.familyNameAnacleto
person.givenNameAna Luísa
person.givenNamePatrícia
person.identifier1245458
person.identifier.ciencia-id9F12-BC2C-5527
person.identifier.ciencia-id9F13-3723-E4B3
person.identifier.orcid0000-0003-4382-1135
person.identifier.orcid0000-0003-3750-9583
person.identifier.ridK-6781-2014
person.identifier.ridH-5933-2013
person.identifier.scopus-author-id50461904700
person.identifier.scopus-author-id6507412894
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication6a23e7c0-317a-48f9-b6c2-e0081dd67fa0
relation.isAuthorOfPublicationa98801c6-5d8c-44cf-8b47-5fa0bc9a2f31
relation.isAuthorOfPublication.latestForDiscoverya98801c6-5d8c-44cf-8b47-5fa0bc9a2f31

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