A combination of synchrotron and laboratory X-ray techniques for studying tissue-specific trace level metal distributions in Daphnia magna

B. De Samber; R. Evens; K. De Schamphelaere; G. Silversmit; B. Masschaele; T. Schoonjans; B. Vekemans; C. R. Janssen; L. Van Hoorebeke; I. Szalóki; F. Vanhaecke; G. Falkenberg; L. Vincze

doi:10.1039/B800343M

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Journal of Analytical Atomic Spectrometry

Issue 6, 2008

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A combination of synchrotron and laboratory X-ray techniques for studying tissue-specific trace level metal distributions in Daphnia magna

B. De Samber , R. Evens , K. De Schamphelaere , G. Silversmit , B. Masschaele , T. Schoonjans , B. Vekemans , C. R. Janssen , L. Van Hoorebeke , I. Szalóki , F. Vanhaecke , G. Falkenberg and L. Vincze

J. Anal. At. Spectrom., 2008, 23, 829-839

DOI: 10.1039/B800343M
Received 08 Jan 2008, Accepted 16 Apr 2008
First published on the web 02 May 2008
This article is part of the collection: Synchrotron Radiation

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In the field of environmental toxicology, the study on the effects of the presence of transition metals such as Cu, Ni and Zn on the health of pelagic and benthic invertebrates is an important research topic. Fast dynamic 2D micro-XRF scanning and dynamic XRF micro-CT experiments on D. magna, a frequently used ecotoxicological model organism, allow the quantitative investigation of the accumulation of metals within specific organs with microscopic resolution. K-means clustering allows comparison of the concentrations of the elements of interest between different tissues/organs. Principal component analysis allows most of the significant statistical variations in these large and complex multivariate data sets to be explained. Also, by combining SR-XRF and absorption CT data sets using appropriate software packages, it becomes possible to unravel the tissue-specific 2D/3D distribution of metals in-situ within delicate organic samples on the 3–15 μm resolution level in an essentially non-destructive manner.

Abstract from Analytical Abstracts 2009

In the field of environmental toxicology, the study on the effects of the presence of transition metals such as Cu, Ni and Zn on the health of pelagic and benthic invertebrates is an important research topic. Fast dynamic 2D micro-XRF scanning and dynamic XRF micro-CT experiments on D. magna, a frequently used ecotoxicological model organism, allow the quantitative investigation of the accumulation of metals within specific organs with microscopic resolution. K-means clustering allows comparison of the concentrations of the elements of interest between different tissues/organs. Principal component analysis allows most of the significant statistical variations in these large and complex multivariate data sets to be explained. Also, by combining SR-XRF and absorption CT data sets using appropriate software packages, it becomes possible to unravel the tissue-specific 2D/3D distribution of metals in-situ within delicate organic samples on the 3-15 µm resolution level in an essentially non-destructive manner.

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Journal of Analytical Atomic Spectrometry

A combination of synchrotron and laboratory X-ray techniques for studying tissue-specific trace level metal distributions in Daphnia magna

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