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《Journal of Neijiang Normal University》 2012-04
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Effect of Cadmium and Mercury on Catalase Activity of the Mudsnail(Cipangopaludina cathayensis)

LEI Yan-li,YIN Wen-zheng,ZHANG Yu,DONG Wei-wei,TANG Zheng-yi*(College of Life Science,Neijiang Normal University,Neijiang,Sichuan 641100,China)  
The effect of single and combinational exposure of heavy metals,including cadmium(Cd) and mercury(Hg),on catalase(CAT) activity in Mudsnail(Cipangopaludina cathayensis) was studied by the acute exposure experiments.The results showed that,in the experimental dose range(the concentration of Cd2+ ranging from 0.5 to 8.0 mg/L and Hg2+ ranging from 0.05 to 0.8 mg/L),when Cd2+ or Hg2+was introduced into the soil alone,low concentration of Cd2+,Hg2+ solution were found to have inductive effect over the CAT activity;while high concentration Cd2+,Hg2+ solution has,on the contrary,inhibitive effects.When exposed under Cd2+ and Hg2+ together for a certain period of time,CAT activity undergoes a significant change,which serves to explore the noxious effect of heavy metals combination of Cd2+ and Hg2+ and the CAT activity of the Mudsnail liver and pancreas and thus adopt them as the indices for indirectly testing environmental pollution.
【Fund】: 内江师范学院大学生科研项目(11NSD-161)
【CateGory Index】: X174
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