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Toxicity Assessment of the Soil by Bioassay Following a Long-Term Application of Sewage Sludge
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 Title & Authors
Toxicity Assessment of the Soil by Bioassay Following a Long-Term Application of Sewage Sludge
Nam, Jae-Jak; Lee, Seung-Hwan; Kwon, Soon-Ik; Hong, Suk-Young; Lim, Dong-Kyu; Koh, Mun-Hwan; Song, Beom-Hun;
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Bioassay was employed to assess toxicity of soil which had been treated with sewage sludges for seven years. The and root elongation test of lettuce (Lactuca Sativa.) elucidated that the intensity of soil toxicity was closely related with the types and amount of sewage sludges applied. Both bioassay methods proved to be useful in an assessment of soil toxicity and were consistent to some extent with the conventional chemical analysis methods. values resulted from were highly correlated with concentration of heavy metals in soils amended with sewage sludges : Cu (), Cr (), Ni (), and Zn (). This demonstrated that both bioassay techniques could be employed as tools for soil toxicity assessment when the soil was exposed to solid wastes such as sewage sludge.
bioassay;sewage sludge;;root elongation;toxicity assessment;
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