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《Environmental Science》 2004-02
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Preliminary Health Risk Assessment of Heavy Metals in Drinking Waters in Beijing

GAO Ji jun 1,2 , ZHANG Li ping 2, HUANG Sheng biao 1, MA Mei 1,WANG Zi jian 1* (1 State Key Laboratory of Environmental Aquatic Chemistry, Research Centre for Eco Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; 2 Department of Chemical Engineering, Beijing Forestry University, Beijing 100083, China)  
Concentrations distribution of the Cu, Hg, Cd, As in drinking water in the 8 city districts and 10 counties in Beijing was studied based on a total of 120 random samples. Health risks associated with 4 metals in drinking water were assessed using USEPA health risk assessment model. The results showed that the concentrations of the heavy metals in drinking water in Beijing ranged from 0 81 to 6 96μg·L -1 for Cu, 0 34~0 82μg·L -1 for Cd, 0 10~0 74μg·L -1 for Hg and 0 19~3 02 μg·L -1 for As. Among the health risks caused by the carcinogens in drinking water, the largest risk associated with As should be in Tongzhou County (2 0×10 -5 ·a -1 ) and that with Cd should be in Changping County (2 3×10 -6 ·a -1 ), while both were significantly lower than the maximum allowance levels recommended by ICRP(5×10 -5 ·a -1 ). Among the non carcinogenic risks in drinking water, the largest risk was the risk associated with Hg, followed by Cu. The non carcinogenic risks levels ranged from 10 -8 to 10 -9 , much lower than the maximum allowance levels recommended by ICRP.
【Fund】: 国际铜业协会资助项目 (H AS 0 2 0 2 )
【CateGory Index】: X824.04
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