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Cadmium toxicity for terrestrial invertebrates: Taking soil parameters affecting bioavailability into account
Lock, K.; Janssen, C.R. (2001). Cadmium toxicity for terrestrial invertebrates: Taking soil parameters affecting bioavailability into account. Ecotoxicology 10(5): 315-322. https://dx.doi.org/10.1023/A:1016767519556
In: Ecotoxicology. Chapman & Hall: London. ISSN 0963-9292; e-ISSN 1573-3017
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| Trefwoorden |
Chemical elements > Metals > Heavy metals > Cadmium
Animalia [WoRMS]; Enchytraeus albidus Henle, 1837 [WoRMS]
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| Abstract |
Acute and chronic ecotoxicity tests with cadmium were conducted with the earthworm Eisenia fetida, the potworm Enchytraeus albidus and the springtail Folsomia candida. To assess the influence of the soil type on cadmium bioavailability, these tests were carried out in a standard artificial soil, in a sandy and a loamy field soil. It was not possible to evaluate the influence of soil parameters on the bioavailability on the basis of the experiments that were conducted in only three different soil types, therefore, literature data were also included. However, even in the same standard artificial soils, toxicity data in the literature for Eisenia fetida and Folsomia candida varied considerably. Consequently, no models could be developed that allow a normalization of the ecotoxicity of cadmium to parameters controlling bioavailability. In contrast to zinc, effect concentrations of cadmium for terrestrial invertebrates were always much higher than background concentrations. As the effect of aging on the bioavailability of cadmium was never taken into account, because toxicity experiments were always carried out in freshly spiked soils, these effect concentrations may even be regarded as conservative. Furthermore, the zinc-cadmium ratio in soils is usually so high that the risk of zinc ecotoxicity for terrestrial invertebrates will usually be much greater in comparison to cadmium ecotoxicity. |
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