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

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外文摘要：Herbicides(HBCs)are extensively used in modem agriculture.However,their potential neg-ative impacts on environmental media have emerged as a significant environmental con-cern.In this study,we employed positive matrix factorization(PMF)to identify the potential sources of HBCs.Furthermore,we utilized a multi-matrix ecological risk model 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 of Σ15HBCs in surface water and groundwater ranged from 585.84 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 ac-ceptable levels.The risk index for the Σ15HBCs 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 Σ15HBCs in surface water and groundwater was 92％and 62％at the"high risk"level,respectively.Interestingly,non-carcinogenic 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 devel-oping and implementing effective regulations to mitigate the ecological and environmental risks associated with HBCs.

外文关键词：

HerbicideSurface and groundwaterSource apportionmentEcological risk assessment

作者：

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

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作者单位：

School of Geographic Sciences,Hunan Normal University,Changsha 410081,China

Key Laboratory of Soil Environment and Pollution Remediation,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China

College of Materials and Chemistry,Tongren University,Tongren 554300,China

基金：

the"Strategic Priority Research Program"of the Chinese Academy of SciencesNational Science and Technology Innovation Leading Talents ProgramPostgraduate Scientific Research Innovation Project of Hunan Province

项目编号：

XDA28010501SQ2022RA24910167CX20220514

出版年：

2024

DOI：

10.1016/j.jes.2023.09.015

环境科学学报(英文版)

中科院生态环境研究中心

环境科学学报(英文版)

CSTPCD

影响因子：0.862

ISSN：1001-0742

年,卷(期)：2024.145(11)