天津科技大学学报Issue(2)：19-22,27,5.
铬（Ⅲ）污染对土壤酶活性的影响
Influence of Chromium(Ⅲ)Contamination on Soil Enzyme
摘要
Abstract
The effect of chromium(Ⅲ)on three soil enzymes,such as catalase,phosphatase and urease,were studied under simulated conditions so as to provide some fundamental information for enzymological assessment index of environmental risk evaluation and remediation. The activities of the three soil enzymes were detected in three degrees of chromium(Ⅲ) contaminated soil(0.2,1,5,g/kg)and in different contaminated periods(1,5,10,15,20,d). The results indicate that chro-mium(Ⅲ) acts as an activator of urease most of the time,but the activity of urease reduces gradually with the increase of contamination time. The activity of phosphatase was restrained on the first day in all the three levels of contaminated soil, and the extent of restraint was closely related to the level of contamination. After that,the activity of phosphatase was accel-erated or restrained in different contaminated soil or contamination period. Phosphatase became tolerant of chromium(Ⅲ) when the experiment was over 20 days later,because the enzyme activity in the contaminated soil(1,5,g/kg) was close to that in the uncontaminated soil. Whereas,catalase was sensitive to chromium(Ⅲ),and its activities showed a remarkably inverse correlation with contamination levels,so its catalase activity can be used as a primary biochemical parameter to evaluate and assess chromium(Ⅲ)contaminated soil.关键词
土壤污染/铬污染/土壤酶Key words
soil contamination/chromium pollution/soil enzyme分类
资源环境引用本文复制引用
张瑞华,孙会芳,王蕾..铬（Ⅲ）污染对土壤酶活性的影响[J].天津科技大学学报,2013,(2):19-22,27,5.基金项目
天津科技大学引进人才科研启动基金资助项目(20070421) （20070421）
天津科技大学理学院科技创新课题 （）
