新污染物多环芳烃衍生物的来源、分布与光化学行为

环境中多环芳烃衍生物(SPAHs)来源广泛，具有“三致”效应，毒性与PAHs母体相当甚至高于母体，是一类具有较高风险的新型有机污染物.大气和表层水体等环境介质中，光化学降解是其重要的消减方式.在梳理文献的基础上，发现SPAHs在来源、分布、行为和风险研究方面与传统污染物PAHs相比有了新的突破.通过总结新污染物SPAHs的环境分布特征与光化学行为研究的最新进展，介绍了3类SPAHs的来源和形成机制，重点评述了不同环境介质中的存在状况与分布特征，讨论了水、冰等介质中SPAHs光化学转化动力学、反应路径以及影响因素，最后对SPAHs的环境行为和风险研究进行了展望.

Critical Review on Environmental Occurrence and Photochemical Behavior of Substituted Polycyclic Aromatic Hydrocarbons

Substituted polycyclic aromatic hydrocarbons (SPAHs) are a type of emerging pollutant that widely exist in the environment, which also exhibit carcinogenicity, mutagenicity, and teratogenicity. These pollutants belong to toxic pollutants because of their similar structures to polycyclic aromatic hydrocarbons (PAHs). Their environmental behavior and ecological risk have attracted increasing attention. Based on a literature review, we found a new breakthrough in the source, distribution, behavior, and risk of SPAHs with comparison to traditional pollutants PAHs. This paper reviewed the current research progress on the environmental occurrence and photochemical behavior of SPAHs. Their sources, formation mechanisms, and distribution characteristics in the multimedia environment were highlighted, and the photochemical transformation kinetics, pathways, and affecting factors of SPAHs in water, ice, and other media were discussed. Furthermore, the research prospects about the environmental behavior and risk of SPAHs were proposed.