Mobility, bioavailability and toxic effects of cadmium in soil samples.

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Publikace nespadá pod Pedagogickou fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.
Název česky mobilita, biodostupnost a toxické efekty kadmia v půdě
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PROKOP Zbyněk ČUPR Pavel ZLEVOROVÁ-ZLÁMALÍKOVÁ V. KOMÁREK Josef DUŠEK Ladislav HOLOUBEK Ivan

Rok publikování 2003
Druh Článek v odborném periodiku
Časopis / Zdroj Environmental Research
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Obor Vliv životního prostředí na zdraví
Klíčová slova Mobility; bioavailability and toxic effects of cadmium in soil samples.
Popis Total concentration is not a reliable indicator of metal mobility or bioavailability in soils. The physicochemical form determines the behavior of metals in soils and hence the toxicity toward terrestrial biota. The main objectives of this study were the application and comparison of three approaches for the evaluation of cadmium behavior in soil samples. The mobility and bioavailability of cadmium in five selected soil samples were evaluated using equilibrium speciation (Windermere humic aqueous model (WHAM), extraction procedures (Milli-Q water, DMSO, and DTPA), and a number of bioassays (Microtox, growth inhibition test, contact toxicity test, and respiration). The mobility, represented by the water-extractable fraction, corresponded well with the amount of cadmium in the soil solution, calculated using the WHAM (r2 0:96; Po0:001). The results of the ecotoxicological evaluation, which represent the bioavailable fraction of cadmium, correlated well with DTPA extractability and also with the concentration of free cadmium ion, which is recognized as the most bioavailable metal form. The results of the WHAM as well as the results of extraction experiments showed a strong binding of cadmium to organic matter and a weak sorption of cadmium to clay minerals.
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