State Environmental Protection Key Laboratory of Drinking Water Source Protection, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China; College of Forestry, Northeast Forestry University, Harbin 150040, PR China.
State Environmental Protection Key Laboratory of Drinking Water Source Protection, National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China.
Ecotoxicol Environ Saf. 2021 Dec 1;225:112741. doi: 10.1016/j.ecoenv.2021.112741. Epub 2021 Sep 1.
Volatile organic compounds (VOCs) are widely present in water environment, which can threaten ecological sustainability and human health. The concentrations of VOCs and their ecological risks in drinking water are of great concern to human beings. Therefore, 54 kinds of VOCs were investigated from 58 locations of the Yangtze River Delta Region (Yangtze River, Qiantang River, Huangpu River, Taihu Lake and Jiaxing Urban River). Out of 54 target compounds, only 31 VOCs were detected, with total concentrations ranging from 0.570 to 46.820 μg/L from 58 locations of all drinking water sources. Among all detected VOCs compounds, only toluene and styrene can cause high-level ecological risk at location TH-2 of Taihu Lake. According to the carcinogenic and non-carcinogenic risk index, compounds such as 1,2-dichloroethane, bromodichloromethane and 1,1,2-trichloroethane posed a higher carcinogenic risk, and 1,2-dichloroethane, trichloroethylene and toluene posed a higher non-carcinogenic risk. Olfactory risks of water bodies in the Yangtze River Delta region are negligible. Although the concentrations of VOCs in the Yangtze River Delta region did not exceed national standards in China and guidelines of the World Health Organization (WHO) for drinking water, the presence of some ecological and health risks indicated that future monitoring studies and control practices are important to ensure ecological safety of drinking water sources.
挥发性有机化合物（VOCs）广泛存在于水环境中，会对生态可持续性和人类健康造成威胁。饮用水中 VOCs 的浓度及其生态风险受到人类的高度关注。因此，研究人员从长江三角洲地区（长江、钱塘江、黄浦江、太湖和嘉兴城市河流）的 58 个地点调查了 54 种 VOCs。在 54 种目标化合物中，仅在 58 个饮用水源的所有地点检测到 31 种 VOCs，浓度范围为 0.570 至 46.820μg/L。在所有检测到的 VOCs 化合物中，仅在太湖 TH-2 点的甲苯和苯乙烯会造成高生态风险。根据致癌和非致癌风险指数，1,2-二氯乙烷、溴二氯甲烷和 1,1,2-三氯乙烷等化合物具有较高的致癌风险，1,2-二氯乙烷、三氯乙烯和甲苯具有较高的非致癌风险。长三角地区水体的嗅味风险可以忽略不计。尽管长三角地区 VOCs 的浓度没有超过中国国家标准和世界卫生组织（WHO）饮用水指南，但存在一些生态和健康风险表明，未来的监测研究和控制实践对于确保饮用水源的生态安全非常重要。
