In vivo bioconcentration of a metal mixture by Danio rerio eleutheroembryos

Zarco-Fernández, Sonia; García García, Aina; Sanz-Landaluze, Jon; Pecheyran, Christophe; Muñoz Olivas, Riansares

In vivo bioconcentration of a metal mixture by Danio rerio eleutheroembryos

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Official URL

https://doi.org/10.1016/j.chemosphere.2017.12.141

Publication date

2018

Authors

Zarco-Fernández, Sonia

García García, Aina

Sanz-Landaluze, Jon

Pecheyran, Christophe

Muñoz Olivas, Riansares

Publisher

Elsevier

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URI

https://hdl.handle.net/20.500.14352/91014

Citation

Zarco-Fernández, S.; García-García, A.; Sanz-Landaluze, J.; Pecheyran, C.; Muñoz-Olivas, R. In vivo bioconcentration of a metal mixture by Danio rerio eleutheroembryos. Chemosphere 2018, 196, 87-94.

Abstract

Exposure to heavy metals has represented one of the most serious health risks of environmental pollution over the last 50 years. Most of the bioconcentration studies that have been carried out to date explored only individual contaminants, unlike the real situations that occur in the environment. In this work, zebrafish eleutheroembryos were exposed to a mixture of CH3Hg(II), iAs(III), Ag(I) and Cd(II), and new BCFs were calculated and compared with those calculated from single metal exposures. In both cases, experimental conditions meet the OECD Test 305 conditions established for aquatic systems. In addition, spatial imaging obtained by laser ablation coupled to inductively plasma mass spectrometry (LA-ICP/MS), has been directly performed in these samples providing complementary information. The new BCF's have revealed some differences compared to single metal exposures when eleutheroembryos were exposed to the metal mixture, especially for iAs(III) and Cd(II). LA-ICP/MS images are in good agreement with the BFC's found, representing an interesting approach to get spatial distribution of metals that reinforces the toxicokinetic information.