|
|
Environmental health risk assessment of plasticizer contaminants in drinking water source |
|
|
Abstract Through the water quality test of a South China reservior water source in low water period analysis, the study found that phthalic acid esters were detected. Environmental health risk assessment of phthalic acid esters of the drinking water source was studied using the United States Environmental Protection Agency (USEPA) method. The results showed that two, phthalic acid butyl ester (DBP), adjacent benzene two formic acid ethyl ester (DEP), phthalic acid two (two-ethylhexyl) ester (DEHP orDOP) were detected. Maximum carcinogenic risk of DOP was 7.32×10-8, and maximum non carcinogenic risk of DBP, DEP and DOP respectively was 3.94×10-5、2.73×10-6 and 2.62×10-4. Carcinogenic risk value of phthalic acid esters of water source was less than 1×10-6, and non carcinogenic risk value was less than 1, which were no more than international regulation, and were in the context of acceptable risk. But concentration of phthalic acid esters was higher than the relative domestic and foreign similar area, so there were potential health risks. It needs to prevent water environment risk according to the possible sources of phthalic acid esters.
|
Received: 30 June 2013
|
|
|
|
|
|
|