由于复合光发起器污染和光转化在邻近轻工业源的水域中增加了环境风险
Wei Zhang1, Wenyu Xu1, Zecheng Yu2
1State Key Laboratory of Environmental Chemistry and Toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Zhejiang Key Laboratory of Environment and Health of New Pollutants, School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Journal of hazardous materials
|December 9, 2025
概括
光源发射器 (PIs) 污染了地表和地下水,造成了生态风险. 它们在水中的转化可能会增加毒性和持久性,需要更好的风险管理.
科学领域:
- 环境化学环境化学
- 水生毒理学 水生毒理学
- 摄影化学的使用.
背景情况:
- 光启动器 (PIs) 广泛使用,但它们对环境的毒性越来越令人担忧.
- 关于水生环境中PI的发生和转变的数据有限.
- 纸张制造和印刷等工业活动有助于PI污染.
研究的目的:
- 调查中国一个工业区的地表水和地下水中PI的发生情况和水平.
- 研究水生系统中代表性PI的光变通路和动力学.
- 评估与PI及其转化产品 (TP) 相关的生态风险.
主要方法:
- 在地表水和地下水中使用分析技术量化S24PI.
- 实验室光解实验以确定PI转变速率和机制.
- 标识和量化PI的转化产品 (TPs).
- 确定PI和TP的生态风险评估.
主要成果:
- 在地表水 (1.99-3.14μg/L) 和地下水 (2.03-4.54μg/L) 中检测到高PI水平.
- 十个PI观察到的第一阶转换动力学,速率常数范围从2.7 × 10−2 h−1到4.0 × 10−1 h−1.1.
- 直接光解和光敏化被确定为关键的转化机制.
- 确定了132个TP,其中一些显示出增加的毒性和持久性.
- 2,4-二甲基提桑 (DETX) 被认为具有高生态风险.
结论:
- 工业活动导致水生系统 (包括地下水) 严重受到IP污染.
- PI光变是复杂的,受直接光解,光敏化和溶解的有机物质的影响.
- 光转化并不总是导致解毒;TP可能会带来风险.
- 调查结果突出了需要改进环境风险评估和管理策略的必要性,用于PI及其TP.
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