摘要
以滹沱河流域石家庄段河流表层水体为研究对象,研究了水体中酰胺类除草剂(AHs)的污染特征及生态风险。于2021年12月(冬季)和2022年4月(春季)采集该河流水体样品,采用固相萃取/气相色谱—串联质谱法对水中AHs进行分析测定。分析结果显示,8种目标AHs总质量浓度呈现春季(3.01~19.81 ng/L)>冬季(1.10~6.30 ng/L),其中异丙草胺、乙草胺和异丙甲草胺是河流中残留量高、分布较为广泛的AHs。采样点5A的AHs污染最为严重,其主要来源为农业生产。使用商值法评估AHs的生态风险,结果表明该区域地表水中的AHs生态风险处于较低水平。
In order to study the pollution characteristics and ecological risks of amide herbicides(AHs)in the surface waters in Shijiazhuang section of the Hutuo River,surface water samples were collected in December 2021(winter)and April 2022(spring),respectively.AHs in surface water samples were analyzed using solid phase extraction and gas chromatography-tandem mass spectrometry.The results showed that:AHs were more contaminated in spring(3.01-19.81 ng/L)than those in winter(1.10-6.30 ng/L).Propisochlor,acetochlor and metolachlor were the AHs with high residue levels and widespread in the river.The sampling site 5A was more polluted and the main source was agricultural production.The ecological risk of AHs was assessed using the entropy method,and the results showed that the ecological risk of AHs in water in the Hutuo River basin was at a low level.
作者
高森
李仪琳
孙瑞雪
马迎雪
丁梓峻
殷文静
GAO Sen;LI Yilin;SUN Ruixue;MA Yingxue;DING Zijun;YIN Wenjing(Hebei Key Laboratory of Geological Resources and Environment Monitoring and Protection,Shijiazhuang Hebei 050021;Hebei Institute of Geo-Environment Monitoring,Shijiazhuang Hebei 050021;School of Environmental Science and Engineering,Hebei University of Science and Technology,Shijiazhuang Hebei 050000)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2024年第7期1009-1015,共7页
Environmental Pollution & Control
基金
国家自然科学基金资助项目(No.21906040)
河北省地质资源环境监测与保护重点实验室开放课题(No.JCYKT202301)
河北省重点研发计划项目(No.22373802D)。
关键词
酰胺类除草剂
时空分布
生态风险
amide herbicides
spatio-temporal distribution
ecological risks
