Occurrence of currently used organochlorine pesticides in the drinking water of Yangtze River Delta urban agglomeration, China

• DOI: 10.1016/j.hazadv.2021.100019
• Publication Date: 2021-10-22T10:12:23Z
• Authors: Shengwei Zhang; Chao Yang; Hongyuan Zheng; Yanxia Li; Xiang-Zhou Meng; Kaiyan Xiao; MingHong Cai
• Keywords: Yangtze river; Urban agglomeration

With the recent restrictions of use high-toxic organochlorine pesticides (OCPs), other OCPs with possibly lower toxicities have become increasingly popular, herein referred to as currently used (CUOCPs). Drinking water is one most valuable resources for preservation life, and it susceptible pollution by CUOCPs. However, there are no existing data on occurrence human exposures CUOCPs in drinking water, thus growing concerns over potential health hazards these undetected chemicals. In this study, an emerging high-throughput organic analysis testing combined a high-volume solid-phase extraction technique was utilized explore presence two types (namely, tap (TW) bottled (BW)) samples from eight cities Yangtze River Delta urban agglomeration, China. The study overcomes deficiencies investigations trace/ultra-trace water. results reveal that total concentrations eighteen target (Σ18CUOCPs) TW BW were 2.68–11.7 ng L–1 (mean 6.11 ± 2.20 L–1) 0.63–2.75 1.37 0.64 L–1), respectively. detected significantly than those TW, indicating generally CUOCP levels BW. This related higher source-water quality more advanced treatment processes production. Meanwhile, ΣCUOCPs areas studied suburban areas. mainly attributed dominant such tetradifon dichlobenil. rapid urbanization cities, individual showed significant differences between Besides, estimated daily intake approximately 0.5 (kg body weight (bw))−1 d−1 males females, which considerably corresponding approximate value (∼0.1 bw)−1 d−1). Thus, revealed harmful exposure TW.