Distribution characteristics and health risk assessment of volatile organic compounds in the groundwater of Lanzhou City, China

This study found that despite considering the volatilization of VOCs from water due to heating, six sampling points (G05 in Qilihe distri ct; G07 and G09 in Xigu district; G16, G17, and G15 in Chengguan district) showed non-carcinogenic risks, ranging from 1.63 to 14.2, while three points (G16 in Chengguan district, and G10 and G07 in Xigu district) exhibited high carcinogenic risks for human health, ranging from 2.94 × 10−4 to 6.85  × 10−4. Trichloroethylene, tetrachloroethylene, and 1,2-dichloroethylene were identified as the dominant VOCs, presenting high non-carcinogenic risk. 1,2-dichloroethane and vinyl chloride were the primary factors for high carcinogenic risk. The high-risk areas were concentrated in Xigu and Chengguan districts, suggesting the need to alert the relevant local government departments.
Source: Environmental Geochemistry and Health - Category: Environmental Health Source Type: research