Toxicity assessment of arsenic and cobalt in the presence of aquatic humic substances of different molecular sizes

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dc.contributor.authorWatanabe, Cláudia Hitomi [UNESP]
dc.contributor.authorMonteiro, Adnivia Santos Costa [UNESP]
dc.contributor.authorGontijo, Erik Sartori Jeunon [UNESP]
dc.contributor.authorLira, Vivian Silva [UNESP]
dc.contributor.authorBueno, Carolina de Castro [UNESP]
dc.contributor.authorKumar, Nirmal Tej [UNESP]
dc.contributor.authorFracácio, Renata [UNESP]
dc.contributor.authorRosa, André Henrique [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T16:45:26Z
dc.date.available2018-12-11T16:45:26Z
dc.date.issued2017-05-01
dc.description.abstractThe release of contaminants in aquatic ecosystems can be influenced by humic acids. In this study, toxicity tests using environmentally relevant concentrations of arsenic and cobalt were conducted both in the presence and absence of aquatic humic substances (AHS) and the fractions of different molecular sizes in the range of (<5, 5–10;10–30; 30–100 and >100 kDa) using the microcrustacean Ceriodaphnia dubia. AHS together with arsenic reduced the toxicity, and the toxicity decreased in fractions of larger molecular size AHS. Despite the presence of cobalt, the reduction in toxicity was not observed and that depended on the molecular size of AHS. There was a trend of enhanced toxicity for Co in fractions of larger molecular sizes, opposed to that found for arsenic. Thus, the humic substances alter toxicity of trace elements, and this effect varies depending on the size of the humic substancesen
dc.description.affiliationInstitute of Science and Technology Sao Paulo State University (UNESP) – Campus Sorocaba, Av. Três de Março, 511 – Alto da Boa Vista
dc.description.affiliationInstitute of Chemistry Sao Paulo State University (UNESP) – Campus Araraquara, Av. Professor Francisco Degni, 55 - Jardim Quitandinha
dc.description.affiliationUnespInstitute of Science and Technology Sao Paulo State University (UNESP) – Campus Sorocaba, Av. Três de Março, 511 – Alto da Boa Vista
dc.description.affiliationUnespInstitute of Chemistry Sao Paulo State University (UNESP) – Campus Araraquara, Av. Professor Francisco Degni, 55 - Jardim Quitandinha
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent1-8
dc.identifierhttp://dx.doi.org/10.1016/j.ecoenv.2017.01.018
dc.identifier.citationEcotoxicology and Environmental Safety, v. 139, p. 1-8.
dc.identifier.doi10.1016/j.ecoenv.2017.01.018
dc.identifier.file2-s2.0-85009160005.pdf
dc.identifier.issn1090-2414
dc.identifier.issn0147-6513
dc.identifier.scopus2-s2.0-85009160005
dc.identifier.urihttp://hdl.handle.net/11449/169340
dc.language.isoeng
dc.relation.ispartofEcotoxicology and Environmental Safety
dc.relation.ispartofsjr1,201
dc.relation.ispartofsjr1,201
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectArsenic
dc.subjectC. dubia
dc.subjectCobalt
dc.subjectHumic substances
dc.subjectMolecular size
dc.subjectToxicity
dc.titleToxicity assessment of arsenic and cobalt in the presence of aquatic humic substances of different molecular sizesen
dc.typeArtigo
unesp.author.lattes5228846314663888[8]
unesp.author.orcid0000-0002-2042-018X[8]

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