Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, United States.
Chemosphere. 2020 Jul;251:126411. doi: 10.1016/j.chemosphere.2020.126411. Epub 2020 Mar 6.
To investigate the occurrence and risk of pesticides in the Huangpu River basin, spatial and temporal concentration variations of 29 commonly used pesticides and their risk quotient (RQ) values for three different trophic organisms (fish, daphnia, green algae) from 16 sampling sites were conducted in 2018-2019. These 29 pesticides include 4 carbamates, 2 benzimidazoles, 6 neonicotinoids, 2 organophosphates, 9 triazoles, and 6 others. Of the 29 pesticides analyzed, 18 were present in every sample taken from the Huangpu River. The concentration of target pesticides in water samples ranged from < LOQ (for buprofezin in summer, autumn, and winter) to 607.30 ng L (for carbendazim in spring). From the source (i.e., Taihu Lake) to the estuary of the Huangpu River, with the exception of isocarbophos and isoprothiolane (gradual decrease), the spatial variation of target pesticide concentrations firstly exhibited an increasing trend and then a decreasing trend. Peak spatial variation was seen in metropolitan area, which is closely related to the type of land use and the discharge of tributaries. In addition, the total summed concentration of the 29 pesticides during winter (1037.60 ng L) was higher than summer (788.82 ng L) in rural and metropolitan areas. For the ecological risk assessments of fish, daphnia, and green algae, the triazoles, carbamates, neonicotinoids were risk-dominant pesticides, respectively. Notably, carbendazim had a 100% detection frequency and the highest concentration of the 29 pesticides analyzed, indicating its high consumption in the Huangpu River basin.
为了研究黄浦江流域农药的发生和风险，本研究于 2018-2019 年在 16 个采样点采集了三种不同营养级生物（鱼类、水蚤、绿藻）的 29 种常用农药的时空浓度变化及其风险商（RQ）值。这 29 种农药包括 4 种氨基甲酸酯类、2 种苯并咪唑类、6 种新烟碱类、2 种有机磷类、9 种三唑类和 6 种其他类农药。在所分析的 29 种农药中，有 18 种农药在黄浦江采集的所有水样中均有检出。水样中目标农药的浓度范围为<LOQ（夏季、秋季和冬季的吡虫啉）至 607.30ng/L（春季的多菌灵）。从源头（太湖）到黄浦江河口，除了异稻瘟净和异丙噻菌胺（逐渐减少）外，目标农药浓度的空间变化首先表现出增加的趋势，然后表现出减少的趋势。在城市地区，目标农药浓度的空间变化达到峰值，这与土地利用类型和支流的排放密切相关。此外，冬季（1037.60ng/L）黄浦江农村和城市地区 29 种农药的总浓度高于夏季（788.82ng/L）。对于鱼类、水蚤和绿藻的生态风险评估，三唑类、氨基甲酸酯类、新烟碱类是风险主导型农药，分别。值得注意的是，多菌灵的检出率为 100%，且在所分析的 29 种农药中浓度最高，表明其在黄浦江流域的高消耗。
