Determination of trace elements in planktonic microcrustaceans using total reflection X-ray fluorescence (TXRF): First results from two Chilean lakes

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dc.contributor.authorWoelfl, S.
dc.contributor.authorMages, M.
dc.contributor.authorMercado, S,
dc.contributor.authorVillalobos, L.
dc.contributor.authorOvari, M.
dc.contributor.authorEncina Montoya, Francisco
dc.date2004
dc.date.accessioned2012-02-26T04:11:01Z
dc.date.available2012-02-26T04:11:01Z
dc.date.issued2012-02-26
dc.description.abstractFirst results are described from the application of a recently developed dry method for determination of elements in single specimens of freshwater microcrustaceans, using total reflection X-ray fluorescence spectrometry (TXRF). This method is a powerful, non-destructive technique for quantifying the trace element content of minute biological samples with a dry weight of 3-50 μg. Three different freshwater microcrustaceans were sampled, from the natural, uncontaminated Lake Laja and from the artificial Rapel reservoir which is slightly contaminated by drainage water from a copper mine. Single specimens of Daphnia pulex, Bosmina chilensis, and Ceriodaphnia dubia were prepared using a modification of the dry method and measured by TXRF. The results showed that both As, Mn, Fe, Ni, Zn, and Cu content and the bioaccumulation of these metals were usually significantly different between the microcrustaceans from the two lakes. The largest difference was found for Cu which was eight times more concentrated in the two microcrustaceans from Rapel reservoir than it was in D. pulex from Lake Laja.es
dc.formatPDFes
dc.identifier.citationAnalytical and Bioanalytical Chemistry, Vol. 378, N°4, 1088-1094, 2004es
dc.identifier.doi10.1007/s00216-003-2273-7es
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/761
dc.language.isoenes
dc.sourceAnalytical and Bioanalytical Chemistryes
dc.subjectZooplanktones
dc.subjectBioacumulaciónes
dc.subjectMetaleses
dc.subjectRayos Xes
dc.subjectEspectrometríaes
dc.titleDetermination of trace elements in planktonic microcrustaceans using total reflection X-ray fluorescence (TXRF): First results from two Chilean lakeses
dc.typeArtículo de Revistaes
uct.carreraIngeniería Civil Ambientales
uct.carreraIngeniería en Acuiculturaes
uct.carreraIngeniería en Recursos Naturales Renovableses
uct.catalogadorjmges
uct.comunidadRecursos Naturaleses
uct.facultadFacultad de Recursos Naturaleses
uct.indizacionISIes
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