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《Journal of Northwest A & F University(Natural Science Edition)》 2011-01
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Effect of PFOA on soil respiration and microorganisms

TIAN Hai-xia,KONG Long,HUANG Qin,WANG Wei,HE Wen-xiang,WANG Xu-dong(College of Resources and Environment,Northwest A&F University,Yangling,Shaanxi 712100,China)  
【Objective】 Effects of perfluorooctanoic acid(PFOA) on soil respiration and microbial were studied in order to indicate its eco-toxicity.【Method】 Cinnamonl,sandy,lou soil,red soil from different regions were sampled,to study soil respiration and microorganisms amount(bacteria,fungi,actinomyces,bacillus) after adding 0,50,100,150,200,300,400 mg/kg PFOA by indoor simulating experience.【Result】 PFOA could inhibit soil respiration.However,as the concentration of PFOA increased,there were no regular changes.PFOA in high concentration could inhibit the population of bacteria and actinomyces,and PFOA had no significant influence on the population of bacillus and fungi.Except red soil,the relationship between PFOA concentrations and actinomyces amounts reached significant or remarkably significant negative correlation.【Conclusion】 The population of actinomyces could be used as an index of soil PFOA pollution.The critical PFOA concentrations were 34 mg/kg for slightly polluted soil and 171 mg/kg for moderately polluted.
【Fund】: 西北农林科技大学大学生创新实验项目;; 中国科学院知识创新工程重大项目(KSCX-YW-09-07);; 西北农林科技大学“青年学术骨干人才支持计划”项目
【CateGory Index】: S154.2
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