Enzymological diagnoses of soil pollution by heavy metals: influence of Cd, Cu, Pb and As in purple soil on dehydrogenase of rice roots

Abstract

Abstract: In this paper, the influence of different concentrations of Cd, Cu, Pb and As on dehydrogenase of rice roots in acid purple soil and limy purple soil was studied. It shows that dehydrogenase undergoes the inhibition and produces the resistance under the influence of heavy metals in soil. When the concentrations are relatively low, the influence of Cd, Cu, Pb and As to enzymatic activities can reflect the difference of soil type. Based on the turning point of inhibition and resistance peak of dehydrogenase, critical concentration of Cd, Cu, Pb and As in two kinds of purple soil is defined.

Key words: Soil, Heavy metal, Dehydrogenase, Enzymological diagnosis

Wu Jiayan, Xia Zenglu, Ba Yin, Li Senzhao . Enzymological diagnoses of soil pollution by heavy metals: influence of Cd, Cu, Pb and As in purple soil on dehydrogenase of rice roots[J]. Chinese Journal of Applied Ecology, 1991, 2(1): 58-62.

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Enzymological diagnoses of soil pollution by heavy metals: influence of Cd, Cu, Pb and As in purple soil on dehydrogenase of rice roots

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