Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China.
Institute of Environmental Health, Wuhan Centers for Disease Prevention & Control, Wuhan, Hubei, 430015, PR China.
Chemosphere. 2020 Aug;252:126533. doi: 10.1016/j.chemosphere.2020.126533. Epub 2020 Mar 17.
Despite frequent detection of atrazine (ATZ) and its degradates (including hydroxyatrazine, ATZ-OH; deethylatrazine, DEA; deisopropylatrazine, DIA; and deethyldeisopropylatrazine, DACT) in a variety of water bodies, documentation of their occurrence and distribution in tap water in China is still scarce. A nationwide survey about ATZ and its degradates (ATZs) in tap water from 31 provinces in 7 regions of mainland China and Hong Kong was conducted during June 2019. At least one of the analytes was found in all the water samples (n = 884). The median sum concentrations of ATZs (ΣATZs) was 21.0 ng/L (range: 0.02 ng/L-3.04 μg/L). The predominant compounds of ATZs in tap water were ATZ and DEA, with a detection frequency of 99.5% and 98.0%, respectively, followed by ATZ-OH (87.3%), DACT (84.0%), and DIA (78.1%). Significant regional variations (p < 0.05) were found in the concentrations of ATZs in tap water, and the highest concentration of ΣATZs (median: 254 ng/L, range: 0.44 ng/L-3.04 μg/L) was found in Northeastern China, followed by Eastern (37.2 ng/L, 0.02-706 ng/L), Northern (30.2 ng/L, 0.04-317 ng/L), Central (29.3 ng/L, 0.04-256 ng/L), Southern (25.0 ng/L, 0.04-297 ng/L), Southwestern (17.2 ng/L, 0.02-388 ng/L), and Northwestern China (3.22 ng/L, 0.06-214 ng/L). The level of ΣATZs in groundwater from rural area of China was about 1/3 of that found in tap water. ATZs cannot be removed by boiling tap water. The highest estimated daily intake of ΣATZs (248 ng/kg-body weight/day) was found in the infant population of Changchun, Jilin, Northeastern China.
尽管在各种水体中频繁检测到莠去津（ATZ）及其降解产物（包括羟基莠去津、ATZ-OH；去乙基莠去津、DEA；去异丙基莠去津、DIA；和去乙基去异丙基莠去津、DACT），但在中国自来水中其存在和分布的相关记录仍然很少。2019 年 6 月，对中国大陆 7 个地区 31 个省份的自来水中的 ATZ 和其降解产物（ATZs）进行了一次全国性调查。在所检测的 884 个水样中，所有水样中至少有一种分析物。莠去津及其降解产物（ΣATZs）的中位数浓度为 21.0ng/L（范围：0.02ng/L-3.04μg/L）。自来水中 ATZs 的主要化合物是莠去津和去乙基莠去津，其检出率分别为 99.5%和 98.0%，其次是莠去津-OH（87.3%）、去乙基去异丙基莠去津（84.0%）和去异丙基莠去津（78.1%）。自来水中 ATZs 的浓度存在显著的地区差异（p<0.05），浓度最高的ΣATZs（中位数：254ng/L，范围：0.44ng/L-3.04μg/L）出现在东北地区，其次是东部地区（37.2ng/L，0.02-706ng/L）、北部地区（30.2ng/L，0.04-317ng/L）、中部地区（29.3ng/L，0.04-256ng/L）、南部地区（25.0ng/L，0.04-297ng/L）、西南部地区（17.2ng/L，0.02-388ng/L）和西北地区（3.22ng/L，0.06-214ng/L）。中国农村地下水的 ΣATZs 水平约为自来水的 1/3。煮沸自来水并不能去除 ATZs。在中国东北长春的婴幼儿群体中，估算的 ΣATZs 日摄入量最高（248ng/kg-体重/天）。
