土壤的芘污染与土壤酶活性

Abstract

Abstract: An experiment was conducted to study changes in enzyme activities in soils exposed to pyrene.The relationship between activities of different enzymes and concentrations of pyrene added were investigated,and sensitive enzymes were cited as eco-toxicological indicators for soil diagnoses of PAHs contamination.The results show that with pyrene （concentration>）50 μg·kg^-1,urease activity and dehydrogenase activity were first inhibited and later activated. However,the activity of phosphatase was activated by the addition of pyrene.No obvious change in catalase activity was observed when concentration of pyrene ranged from 50 to 1 200 μg·kg^-1.It can be concluded that activities of soil urease, dehydrogenase,and phosphatase could possibly be used as diagnostic indicators of soil contamination with pyrene.

Key words: pyrene, soil enzyme activity, eco-toxicological indicator, inhibit, activation

CLC Number:

GONG Xuan, LI Pei-Jun, ZHANG Hai-Rong, JIAO Xiao-Guang, GUO Wei. Pyrene contamination and soil enzyme activity[J]. Journal of Ecology and Rural Environment, 2004, 20(3): 53-55,59.

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Pyrene contamination and soil enzyme activity

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