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在长江流域典型农药的空间分布,阶段划分和生态风险评估

Chengcheng Bu¹, Chong Chen², Xitong Fu³

¹State Key Laboratory of Water Pollution Control and Green Resource Recycling, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.

Journal of hazardous materials

|May 22, 2025

概括

长江流域 (YRB) 的农药污染很普遍,在悬浮颗粒中发现有机和,在溶水中发现三和. 对水生生态系统和儿童的风险很大,需要严格的农药管理.

科学领域:

环境化学环境化学
生态毒理学生态毒理学
评估水质水质的评估.

背景情况:

长江流域 (YRB) 是亚洲的重要农业和经济枢纽,拥有广泛的农业和航运业.
上海的黄浦河 (HR) 也受到农业活动和航运的严重影响.
这些地区的农药应用导致了大量的水污染,对生态系统和人类健康构成风险.

研究的目的:

调查57种常见农药在YRB的空间分布和分区.
评估与YRB中的农药污染相关的生态和人类健康风险.
在YRB中识别农药的潜在来源和污染动态.

主要方法:

在YRB的30个河段取样,以分析农药度.
在溶解阶段,悬浮颗粒物 (SPM) 和表面沉积物之间确定农药分区.
基于检测到的农药水平的生态和人类健康风险评估.

主要成果:

农药总度在溶解,SPM和沉积物阶段有显著的变化.
在SPM阶段,有机和铁类物质占主导地位,而在溶解阶段,三酸盐和新类物质占主导地位.
杀虫剂具有很高的流动性,沉积物作为一些化合物 (如三) 的潜在二次来源. 有机,铁和新类药物带来了生态风险,儿童面临更高的健康风险.

结论:

农药污染是YRB中普遍存在的问题,具有复杂的空间分布和分区.
生态风险是显著的,特别是来自有机,铁和类毒素.
儿童更容易接触农药,这凸显了严格的农药管理和在YRB中持续监测的迫切需要.

关键词:

检测频率的检测频率逃亡率的分数是什么这就是HCHs.黄浦河是黄浦河的一条河流.风险系数风险系数风险系数

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