Key Laboratory of Environment and Health (HUST), Ministry of Education & Ministry of Environmental Protection, And State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, PR China.
Institute of Environmental Health, Wuhan Centers for Disease Prevention & Control, Wuhan, Hubei, 430015, PR China.
Chemosphere. 2020 Jul;251:126385. doi: 10.1016/j.chemosphere.2020.126385. Epub 2020 Feb 29.
Fipronil (FP) is an emerging insecticide, however, its occurrence in drinking water and source water is limited. In this work, a total of 789 tap water and 95 ground water samples were collected from China in June 2019 in order to assess occurrence of FP and its derivatives (FPs). FPs were also analyzed in source, treated (n = 10, July), and tap water samples (n = 81, July and October 2019) originating from the central Yangtze River and its tributary, the Hanshui River in Wuhan. The sum concentrations of FPs (ΣFPs) in the tap water in China ranged from not detected (ND) to 5.07 (median: 0.03 ng/L), with FP found in 55.3% of the samples, and other targets ≤ 50.0%. Significant regional variations in the ΣFPs values were found between East China (75th percentile: 0.31 ng/L) and Northwest China (0.04), as well as between East China and North China (0.04). Similar ΣFPs values were found for ground water and tap water. The estimated daily intake of ΣFPs via water ingestion was below 200 pg/kg-bw/day for all age groups and was lower than the reference dose for FP (0.2 μg/kg-bw/day). Additionally, FPs were found in all of the source water samples collected in Wuhan with concentrations in the range of 0.84-2.72 ng/L for ΣFPs (median: 2.39). Most of these FPs were removed during water treatment. Higher concentration of ΣFPs in tap water was observed in July (median: 0.04 ng/L) compared to that in October (ND). This is the first study on the occurrence of FPs in the Yangtze River, the fate of FPs during the tap water treatment, and the regional distribution of FPs in tap water from China.
氟虫腈（FP）是一种新兴的杀虫剂，但在饮用水和水源水中的含量有限。本研究于 2019 年 6 月在中国共采集了 789 份自来水和 95 份地下水水样，以评估 FP 及其衍生物（FPs）的存在情况。还分析了来自长江中游及其支流汉水河的水源水、处理水（n=10，7 月）和自来水中的 FPs（FP）（n=81，2019 年 7 月和 10 月）。中国自来水中 FPs 的总和浓度（ΣFPs）范围为未检出（ND）至 5.07（中位数：0.03ng/L），55.3%的样品中检出 FP，其他目标物≤50.0%。华东地区（第 75 百分位数：0.31ng/L）和西北地区（0.04）、华东地区和华北地区（0.04）之间的 ΣFPs 值存在显著的区域差异。地下水和自来水的 ΣFPs 值相似。通过饮水摄入估算的ΣFPs 日摄入量对于所有年龄组均低于 200pg/kg-bw/天，低于 FP 的参考剂量（0.2μg/kg-bw/天）。此外，在武汉采集的所有水源水中均检出 FPs，ΣFPs 浓度范围为 0.84-2.72ng/L（中位数：2.39ng/L）。这些 FPs 大部分在水处理过程中被去除。7 月（中位数：0.04ng/L）自来水中ΣFPs 的浓度高于 10 月（ND）。这是首次研究 FP 在长江中的存在情况、FP 在自来水处理过程中的命运以及中国自来水中 FP 的区域分布。
