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《Environmental Engineering》 2012-01
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POLLUTION EVALUATION OF HEAVY METALS IN LAKE WATER BASED ON FUZZY COMPREHENSIVE ASSESSMENT

Sun Qingzhan Zang Shuying Zhang Nannan(Heilongjiang Province College Key Laboratory of Remote Sensing Monitoring of Geographic Environment, Harbin Normal University,Harbin 150025,China)  
Fuzzy comprehensive assessment was applied to evaluate the heavy metals pollution of Xianhe Lake.In order to highlight the influence of external toxic substances,the fuzzy comprehensive-weight sets model was developed,and the accuracy of its evaluation result is also raised.Fuzzy evaluation results showed that the water of Xianhe Lake was with mild heavy metal pollution.Among them the As、Cd and Pb were found to be the most serious.Based on the parameter estimation of the evaluation results,it is known that the credibility of Xianhe Lake water level Ⅲ and above is 95%,and the credibility of standard level Ⅱ and above is more than 80%.Through the verification,the results of the evaluation of gray correlation analysis method and those of fuzzy comprehensive assessment are basically the same.
【Fund】: 国家自然科学基金重点项目(41030743);国家自然科学基金青年项目(41001243)
【CateGory Index】: X824
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