Legacy of herbicides in water from Hailun City,Northeast China:Occurrence,source,and ecological risk assessment  

作　　者：Jun Ma Wenjie Ren Hongzhe Wang Jiayin Song Junfeng Jia Hong Chen Changyin Tan Ying Teng 

机构地区：[1]School of Geographic Sciences,Hunan Normal University,Changsha 410081,China [2]Key Laboratory of Soil Environment and Pollution Remediation,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China [3]College of Materials and Chemistry,Tongren University,Tongren 554300,China

出　　处：《Journal of Environmental Sciences》2024年第11期50-63,共14页环境科学学报（英文版）

基　　金：supported by the“Strategic Priority Research Program”of the Chinese Academy of Sciences(No.XDA28010501);the National Science and Technology Innovation Leading Talents Program(No.SQ2022RA24910167);the Postgraduate Scientific Research Innovation Project of Hunan Province(No.CX20220514).

摘　　要：Herbicides(HBCs)are extensively used in modern agriculture.However,their potential negative impacts on environmental media have emerged as a significant environmental concern.In this study,we employed positivematrix factorization(PMF)to identify the potential sources of HBCs.Furthermore,we utilized amulti-matrix ecological riskmodel to assess the risks associated with HBCs in both surface water and groundwater in the black soil region of Northeast China.The findings revealed that the levels of15HBCs in surface water and groundwater ranged from585.84 to 6466.96 ng/L and 4.80 to 11,774.64 ng/L,respectively.The PMF results indicated that surface runoff and erosion accounted for 50%of the total HBCs in water,serving as the primary sources.All tested HBCs exhibited acute risk values within acceptable levels.The risk index for the∑15HBCs was categorized as“moderate risk”in 31%of the surface waters and 13%of the groundwaters.However,4%of the groundwater sampling sites reached the“high risk”level.The chronic risk quotient of∑15HBCs in surface water and groundwater was 92%and 62%at the“high risk”level,respectively.Interestingly,noncarcinogenic HBCs contributed more significantly to the ecotoxicology of the aquatic system than carcinogenic HBCs.This study provides comprehensive information on the legacy of HBCs in water bodies and emphasizes the potential risks posed by HBCs to aquatic systems.The results obtained from this study could help relevant management authorities in developing and implementing effective regulations tomitigate the ecological and environmental risks associated with HBCs.

关 键 词：HERBICIDE Surface and groundwater Source apportionment Ecological risk assessment 

分 类 号：X524[环境科学与工程—环境工程] X820.4