Effects of seven organic pollutants on soil nematode Caenorhabditis elegans

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Publikace nespadá pod Ekonomicko-správní fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.
Název česky Vliv 7 organických polutantů na půdní roupici Caenorhabditis elegans
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SOCHOVÁ Ivana HOFMAN Jakub HOLOUBEK Ivan

Rok publikování 2007
Druh Článek v odborném periodiku
Časopis / Zdroj Environment International
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Obor Kontaminace a dekontaminace půdy včetně pesticidů
Klíčová slova soil; nematodes; Caenorhabditis elegans; organic pollutants
Popis Caenorhabditis elegans is a free-living soil nematode that is commonly used as a model for toxicity tests. The aim of this study was to investigate the toxicity of seven organic pollutants: four azaarenes (quinoline, acridine, phenazine, and 1,10-phenanthroline), short-chain chlorinated paraffins, and two organochlorinated pesticides (toxaphene and hexachlorobenzene). The exposure to all chemicals was carried out in three test media (soil, agar, and aquatic medium), and adult mortality was evaluated after 24 and 48 hours. Toxaphene was the most toxic substance with LC50 (48h) of 379 mg/kg in the soil and 0.2 mg/L in the aquatic medium. Quinoline was the most toxic chemical in agar test with LC50 (48h) of 10 mg/L. HCB showed a very low toxicity in all tests, maybe due to its very low water solubility. Longer than 24h test duration was found necessary for getting more correct data on toxicity. In comparison with other studies, C. elegans was less sensitive than other soil invertebrates. Different response might be attributed to different exposure routes and shorter test duration. Equilibrium partitioning theory was used to calculate Koc from results of soil and aquatic tests but this approach was found not working. Our results suggest that the tests with nematode C. elegans should be included to the battery of tests for risk assessment of POPs in soil.
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