文献类型：期刊文献

英文题名：Enzyme Activities in Perfluorooctanoic Acid (PFOA)-Polluted Soils

作者：Zhang Wei[1,2,3];Lin Kuang-Fei[1,2,3];Yang Sha-Sha[1,2,3];Zhang Meng[1,2,3]

机构：[1]E China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China;[2]State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2013

卷号：23

期号：1

起止页码：120

外文期刊名：PEDOSPHERE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000315076700014)】；

基金：Supported by the National Natural Science Foundation of China (No. 40901148), the Science and Technology Committee Research Program of Shanghai, China (No. 12DZ0502700), the National Environmental Protection Public Welfare Science and Technology Research Program of China (No. 200909089), the National Forestry Public Welfare Science and Technology Research Program of China (No. 201104088), and the Fundamental Research Funds for the Central Universities of China (No. WB0911011).

语种：英文

外文关键词：activity inhibition; biomarker; dose-response curve; ecological risk; regression equation

摘要：Perfluorooctanoic acid (PFOA) is a popular additive of the chemical industry; its effect on activities of important soil enzymes is not well understood. A laboratory incubation experiment was carried out to analyze the PFOA-induced changes in soil urease, catalase, and phosphatase activities. During the entire incubation period, the activities of the three soil enzymes generally declined with increasing PFOA concentration, following certain dose-response relationships. The values of EC10, the contaminant concentration at which the biological activity is inhibited by 10%, of PFOA for the soil enzyme activity calculated from the modeling equation of the respective dose-response curve suggested a sensitivity order of phosphatase > catalase > urease. The effect of PFOA on soil enzyme activities provided a basic understanding of the eco-toxicological effect of PFOA in the environment. Results of this study supported using soil phosphatase as a convenient biomarker for ecological risk assessment of PFOA-polluted soils.