Abstract：Objective To preliminarily evaluate the potential health risk of chemical pollutants in finished water in a city of the Pearl River Delta. Methods The concentrations of 5 genetic toxic substances (including As, Cr6+, Cd, CHCl3 and CCl4) and 12 non-carcinogenic substances (Pb, Hg, Se, CN-1, F-, NO3-, Fe, NH3-N, Mn, Cu, Zn and volatile phenol) in finished water from 24 centralized water supply systems in a city of the Pearl River Delta were determined in each quarter from January to December, 2015. The health risk of exposure to the above-mentioned 17 chemical pollutants through oral route was assessed according to the models recommended by the U.S. Environmental Protection Agency (US EPA). Results The total health risk caused by the 17 chemical pollutants in the finished water in the city was 3.61×10-5/a. The total carcinogenic risk was 3.61×10-5/a, and the total non-carcinogenic risk was 155.02×10-11/a. Both risk was higher in the dry period than in the rainy period, and the risk of the centralized water supply systems with conventional rapid filter were higher than that of the systems with V-filter. The carcinogenic risk caused by each genetic toxic substance was in the order of Cr6+>As>CHCl3>Cd>CCl4. The non-carcinogenic risk caused by each non-carcinogenic substance was in the order of F->NO3->Pb>Hg>Se>NH3-N>Cu>Fe>CN-1>Mn>Zn>volatile phenol. Conclusions The health risk caused by the 17 chemical pollutants in the finished water in a city of the Pearl River Delta in 2015 is below the maximal acceptable risk value (5.0×10-5/a)recommended by International Commission on Radiological Protection.
邓春拓,何伦发,郭艳,黄隽,梁锡念,吴惠刚. 珠三角某市2015年出厂水中化学污染物健康风险评价[J]. 实用预防医学, 2017, 24(4): 425-428.
DENG Chun-tuo, HE Lun-fa, GUO Yan, HUANG Jun, LIANG Xi-nian, WU Hui-gang. Health risk assessment of chemical pollutants in finished water in a city of the Pearl River Delta, 2015. , 2017, 24(4): 425-428.
2017, Vol. 24 
