中国各地地表水中的有机微污染物:发生情况和生态风险
Rong Cao1, Ye Sun2, Shuai Sun3
1Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
Water research
|April 12, 2025
概括
全国一项调查显示,中国的地表水中存在广泛的疏水性微污染物. 甲酸乙 (PAE) 是最常见的,其中有几个化合物具有显著的生态风险.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 分析化学 分析化学
背景情况:
- 表面水中的有机污染物对生态系统和人类健康构成风险.
- 目前对表面水污染物的选方法通常是局部化的.
- 缺乏对疏水性微污染物流行情况的全面了解.
研究的目的:
- 在中国的地表水中对恐水性微污染物进行全国性调查.
- 识别和量化普遍存在的有机微污染物,并评估它们的生态风险.
- 为改善水质评估和管理策略提供数据.
主要方法:
- 气色谱 基于轨道轨道质谱仪的嫌疑人选分析.
- 在中国各地进行全国范围的地表水采样.
- 在13个类别中量化和识别91种有机微污染物.
主要成果:
- 甲酸 (PAE) 度最高 (中位数:1405.33 ng/L),其次是多环芳 (PAH) 和有机化农药 (OCP).
- 新发现的有多二福兰前体和有的PAHs (Cl-PAHs).
- 十五种化合物超过了1的风险系数,这表明存在重大生态风险,其中captafol被确定为高风险的OCP.
结论:
- 疏水性微污染物在中国的地表水域普遍存在,空间差异很大.
- PAE,PAH和OCP是需要管理人员注意的关键污染物.
- 这项研究强调了对像captafol这样的新兴污染物进行有针对性的风险评估和管理的必要性.
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