The measurement of whole body concentration of metals in very small aquatic organism, such as Daphnia Magna, is a requisite to a better understanding of toxicological effects derived from exposure to increased metal contents in the water. High resolution-continuum source electrothermal atomic absorption spectrometry permits the direct determination of the elements of interest in Daphnia Magna specimens in a very straightforward way, with sensitivity and linear range that is fit for purpose. Different methods to control the exposition ofDaphnia Magnato Zn, Ni, Cd and Ag nanoparticles have been developed. 

Moreover, a novel application of isotopic imaging by means of laser ablation-ICPMS clearly demonstrates the potential of this technique to determine with high spatial resolution (30 µm) the organs in which a tracer accumulates.

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