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dc.contributor.authorSchneider, Larissa-
dc.contributor.authorEggins, Sam-
dc.contributor.authorMaher, William A.-
dc.contributor.authorVogt, Richard Carl-
dc.contributor.authorKrikowa, Frank-
dc.contributor.authorKinsley, Leslie P.J.-
dc.contributor.authorEggins, Stephen M.-
dc.contributor.authorSilveira, Ronis da-
dc.date.accessioned2020-06-15T21:48:16Z-
dc.date.available2020-06-15T21:48:16Z-
dc.date.issued2015-
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/17558-
dc.description.abstractReptiles are ideal organisms for the non-invasive monitoring of mercury (Hg) contamination. We have investigated Hg bioaccumulation in tissue layers of reptile dermis as a basis for establishing a standardized collection method for Hg analysis. Tissue samples from freshwater turtle species Podocnemis unifilis and Podocnemis expansa and caiman species Melanosuchus niger and Caiman crocodilus, all from the Amazonian region, were analysed in this study. We first tested the relationships between Hg concentrations in keratin and bone to Hg concentrations in muscle to determine the best predictor of Hg concentration in muscle tissue. We then investigated the potential for measuring Hg concentrations across turtle carapace growth rings as an indicator of longer term changes in Hg concentration in the environment. Hg concentrations were significantly lower in bone (120ngg-1 caimans and 1ngg-1 turtles) than keratin (3600ngg-1 caimans and 2200ngg-1 turtles). Keratin was found to be a better predictor of exposure to Hg than muscle and bone tissues for both turtles and caimans and also to be a reliable non-invasive tissue for Hg analysis in turtles. Measurement of Hg in carapace growth rings has significant potential for estimating Hg bioaccumulation by turtles over time, but full quantification awaits development and use of a matrix-matched reference material for laser ablation ICPMS analysis of Hg concentrations in keratin. Realising this potential would make a valuable advance to the study of the history of contamination in mining and industrial sites, which have until now relied on the analysis of Hg concentrations in sediments. © 2014 Elsevier Ltd.en
dc.language.isoenpt_BR
dc.relation.ispartofVolume 119, Pags. 163-170pt_BR
dc.rightsRestrito*
dc.subjectAblationen
dc.subjectBioaccumulationen
dc.subjectBiochemistryen
dc.subjectBoneen
dc.subjectKeratinen
dc.subjectLaser Ablationen
dc.subjectMercury (metal)en
dc.subjectMuscleen
dc.subjectNoninvasive Medical Proceduresen
dc.subjectAmazonen
dc.subjectCaimanen
dc.subjectCarapaceen
dc.subjectLaser-ablation-icp-msen
dc.subjectMercury Concentrationsen
dc.subjectNon-invasive Monitoringen
dc.subjectNoninvasive Methodsen
dc.subjectTurtleen
dc.subjectTissue Engineeringen
dc.subjectKeratinen
dc.subjectMercuryen
dc.subjectFresh Wateren
dc.subjectKeratinen
dc.subjectMercuryen
dc.subjectPollutanten
dc.subjectAblationen
dc.subjectBioaccumulationen
dc.subjectBoneen
dc.subjectMercury (element)en
dc.subjectMining Industryen
dc.subjectMuscleen
dc.subjectSediment Pollutionen
dc.subjectTurtleen
dc.subjectAnimals Tissueen
dc.subjectBioaccumulationen
dc.subjectBone Tissueen
dc.subjectCaimanen
dc.subjectCaiman Crocodilusen
dc.subjectChemical Analysisen
dc.subjectContaminationen
dc.subjectDermisen
dc.subjectMelanosuchus Nigeren
dc.subjectMuscle Tissueen
dc.subjectNonhumanen
dc.subjectPodocnemis Expansaen
dc.subjectPodocnemis Unifilisen
dc.subjectReptileen
dc.subjectTurtleen
dc.subjectAnalysisen
dc.subjectAnimalsen
dc.subjectBoneen
dc.subjectChemistryen
dc.subjectComparative Studyen
dc.subjectCrocodilianen
dc.subjectEnvironmental Monitoringen
dc.subjectEpidermisen
dc.subjectEvaluation Studyen
dc.subjectMass Spectrometryen
dc.subjectMetabolismen
dc.subjectPharmacokineticsen
dc.subjectPollutanten
dc.subjectProceduresen
dc.subjectMuscle, Skeletalen
dc.subjectAmazoniaen
dc.subjectCaimanen
dc.subjectCaiman Crocodilusen
dc.subjectMelanosuchus Nigeren
dc.subjectPodocnemis Expansaen
dc.subjectPodocnemis Unifilisen
dc.subjectReptiliaen
dc.subjectTestudinesen
dc.subjectAlligators And Crocodilesen
dc.subjectAnimalen
dc.subjectBone And Bonesen
dc.subjectEnvironmental Monitoringen
dc.subjectEnvironmental Pollutantsen
dc.subjectEpidermisen
dc.subjectFresh Wateren
dc.subjectKeratinsen
dc.subjectMass Spectrometryen
dc.subjectMercuryen
dc.subjectMuscle, Skeletalen
dc.subjectTurtlesen
dc.titleAn evaluation of the use of reptile dermal scutes as a non-invasive method to monitor mercury concentrations in the environmenten
dc.typeArtigopt_BR
dc.identifier.doi10.1016/j.chemosphere.2014.05.065-
dc.publisher.journalChemospherept_BR
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