The use of a portable total reflection X-ray fluorescence spectrometer for trace element determination in freshwater microcrustaceans (Daphnia)

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dc.contributor.authorMages, M.
dc.contributor.authorWoelfl, S.
dc.contributor.authorOvari, M.
dc.contributor.authorTumpling Jr., W.V.
dc.contributor.authorEncina Montoya, Francisco
dc.date2004
dc.date.accessioned2012-02-27T03:00:00Z
dc.date.available2012-02-27T03:00:00Z
dc.date.issued2012-02-27
dc.description.abstractThe suitability of a newly developed, portable total reflection X-ray fluorescence (TXRF) spectrometer (PicoTAX, Roentec, Berlin, Germany) to analyze trace elements in biological material was tested and compared with a stationary instrument (Spectrometer 8030 C, FEI, Munich, Germany). For that, single freshwater microcrustacean specimens (Daphnia spec.) with dry weights ranging between 1.6 and 18.8 μg individual-1 were prepared according to the dry method and analyzed with both instruments. Additionally, for orientation purposes, freshly collected Daphnia were prepared in field according to the wet method directly on the glass carrier and analyzed using the portable PicoTAX. For method validation, certified reference material (CRM 414, plankton) was analyzed. The results of the in-field measurements demonstrate that the PicoTAX yields very fast and sufficiently sensitive in-field measurements on the element content of minute biological samples. For As, Cu, K, Mn, Ni and Sr, a good correlation was found between the two spectrometers. Only for Ca, Fe, Pb and Zn the comparison with the results of the stationary equipment has shown significant differences.es
dc.formatPDFes
dc.identifier.citationSpectrochimica Acta - Part B Atomic Spectroscopy, Vol. 59, N°8, 1265-1272, 2004es
dc.identifier.doi10.1016/j.sab.2004.05.006es
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/781
dc.language.isoenes
dc.sourceSpectrochimica Acta - Part B Atomic Spectroscopyes
dc.subjectZooplanktones
dc.subjectDaphniaes
dc.subjectEspectrometríaes
dc.titleThe use of a portable total reflection X-ray fluorescence spectrometer for trace element determination in freshwater microcrustaceans (Daphnia)es
dc.typeArtículo de Revistaes
uct.carreraIngeniería en Recursos Naturales Renovableses
uct.catalogadorjmges
uct.comunidadRecursos Naturaleses
uct.facultadFacultad de Recursos Naturaleses
uct.indizacionISIes
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