Health Risk Assessment of CarCinogeniC and Non-CarCingeniC SubstanCes in Underground Water from the ShuangCun Karst System of Central-Southern Shandong ProvinCe

• Published in: Yankuàng cèshì Vol. 35; no. 1; pp. 90 - 97
• Main Authors: Zhao, Qing-ling, Li, Qing-cai, Xie, Jiang-kun, Shi, Qi-peng, Chen, Li-jiao
• Format: Journal Article
• Language: Chinese; English
• Published: Science Press, PR China 01.01.2016
• Subjects: cancerogenic substance; Carcinogens; Drinking water; Freshwater; Health; health risk assessment; Karst; karst water system; middle-south shandong province region; Risk; Risk assessment; Sampling; underground water; INW, China, People's Rep., Shandong Prov
• ISSN: 0254-5357
• DOI: 10.15898/j.cnki.11-2131/td.2016.01.015

Currently the majority of water quality assessment in China is based on comparison parameters of water with those of drinking water standards. However,to what extent the pollutants influence human health is less known. Herein,Shuangcun karst water samples in central-southern Shandong province were chosen to evaluate human health risk. Using the risk assessment model of USEPA,the risk induced by two carcinogenic substances, such as As,Cr(VI)and seven non-carcinogenic substances( Hg,F,CN-,NO2- -N,NH4+ -N,NO3- -N, phenols)are evaluated. Results show that concentration of NO3- -N and NO2- -N in samples from several sites exceeds the limiting value of Hygienic Standard for Drinking Water( GB5749-2006 ). In terms of annual personal health risk caused by gene toxic substances through water drinking,Cr(VI)shows greater risk than As. In terms of risk caused by non-gene toxic substances,the induced risk has the sequence of NO3- -N>F>NO2- -N >Hg>CN- >NH4+ -N>phenols. Moreover,the hazard of carcinogenic substances is much stronger than that of non-carcinogenic substances. Cr(VI)is the primary pollutant. For all the sampling sites,total risk values range from 5. 0 x 10 -5 to 10. 0 x 10 -5 a-1 ,and the risk level is IV( fair). It means that underground water in the sampling area is harmful to human health to some extent. Therefore,it is worth more attention when the studied water serves as the drinking water source.