水环境中氯代多环芳烃的光化学生成及影响因素研究进展
Research advances on photochemical generation and influencing factors of chlorinated polycyclic aromatic hydrocarbons in water environment
蔡北川 1胡学锋 1李昱洁 1白亚星1
作者信息
- 1. 陕西科技大学环境科学与工程学院,西安,710021
- 折叠
摘要
氯代多环芳烃(chlorinated polycyclic aromatic hydrocarbons,Cl-PAHs)是多环芳烃(polycyclic aromatic hydrocarbons,PAHs)的一种衍生物,广泛存在于各种环境介质中.一些Cl-PAHs显示出与二噁英相似的毒性特性,甚至更高的毒性当量(TEQs).了解Cl-PAHs的来源和形成机制对于控制其排放和降低人类暴露于这些有机污染物的风险有重要意义.然而,目前关于Cl-PAHs的来源、形成机制和环境特征仍缺乏全面的了解.该综述旨在总结Cl-PAHs在水环境中的污染现状与来源、毒性、光化学形成机理以及PAHs光致氯代影响因素,并对今后的PAHs光致氯代研究方向进行了展望,进而为该类化合物的环境污染及生态风险评估提供相应参考.
Abstract
Chlorinated polycyclic aromatic hydrocarbons(Cl-PAHs),the derivatives of polycyclic aromatic hydrocarbons(PAHs),are widely present in various environmental media.Some Cl-PAHs display similar toxic properties and even higher toxic equivalent quantities(TEQs)than dioxins.Understanding the sources and formation mechanisms of Cl-PAHs is important for controlling their emissions and reducing the risk of human exposure to these organic pollutants.Nevertheless,comprehensive knowledge on the sources,formation mechanisms,and environmental characteristics of Cl-PAHs is lacking.Here,this review summarized the current pollution status,sources,toxicity,photochemical formation mechanisms of Cl-PAHs,and photochlorination influencing factors of PAHs in water environment.Furthermore,this review recommended future research directions for PAHs photochlorination and then provided corresponding references for the environmental pollution and ecological risk assessment of this class of compounds.
关键词
多环芳烃/氯代多环芳烃/光致氯代/氯代机制Key words
PAHs/Cl-PAHs/photochlorination/chlorination mechanism引用本文复制引用
出版年
2024
NETL
NSTL
万方数据