环境科学
氯氰菊酯
土壤水分
三角洲
污染
溴氰菊酯
土工试验
环境化学
杀虫剂
毒理
农学
生态学
生物
土壤科学
化学
工程类
航空航天工程
作者
Fucai Deng,Jianteng Sun,Rongni Dou,Xiaolong Yu,Zi Wei,Chunping Yang,Xiangfeng Zeng,Lizhong Zhu
标识
DOI:10.1016/j.scitotenv.2020.139181
摘要
This study focused on contamination levels and spatial distributions of four common pyrethroids found in agricultural soils of the Yangtze River Delta (YRD), China. Pyrethroids were detected in 241 soil samples (88.8% detection rate) with total concentrations ranging from cypermethrin (1.10 ng/g) > deltamethrin (0.89 ng/g) > cyhalothrin (0.20 ng/g). The highest concentration of fenpropathrin was recorded as 37.6 ng/g. The highest detection rate of 63.9% was found for cyhalothrin. A distinct pattern of spatial distribution was observed where high concentrations of pyrethroids were detected in sites around Taihu Lake. Potential sources of pyrethroids in agricultural soils from the YRD region include pyrethroids used for pest control and wastewater irrigation in the region. Redundancy and correlation analyses show that the soil TOC values have played a significant role in the behavior of pyrethroids in agricultural soils of the YRD region. Potential ecological risks of pyrethroids in agricultural soils of the YRD region are low. Cypermethrin and cyhalothrin showed potential toxic effects on the ecological conditions of agricultural soils in 4.6% and 2.9% of the sampling sites, respectively. Further studies should pay more attention to the potential human health risks posed by pyrethroids in agricultural soils for the protection of soil quality and food safety.
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