Photodegradation of organic micropollutants in aquatic environment: Importance, factors and processes
Photodegradation of organic micropollutants in aquatic environment: Importance, factors and processes
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水环境中有机微污染物的光降解：重要性、影响因素和过程
DOI：
10.1016/j.watres.2022.118236
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发表时间：
2023-01-20
期刊：
影响因子：
12.8
通讯作者：
Wang, Jieqiong
中科院分区：
文献类型：
--
作者：
Guo, Zhongyu;Kodikara, Dilini;Wang, Jieqiong
光化学反应广泛存在于水环境中，在水生态系统中起着重要作用。特别是，太阳光诱导的光降解对于许多有机微污染物（OMP）是有效的，特别是那些不能进行水解或生物降解的有机微污染物，因此可以减轻化学污染。最近的报道表明，光降解可能发挥更重要的作用比生物降解在许多OMP在水环境中的转换。光降解可受水基质如pH、无机离子和溶解性有机物（DOM）的影响。水基质，如DOM的光降解的效果是复杂的，和新的见解有关的DOM的不同影响最近有报道。此外，光降解过程还受到纬度、水深和阳光时间变化等物理因素的影响，因为这些因素决定了光照条件。然而，它仍然具有挑战性，以获得在水生环境中的光降解的重要性的概述，因为所涉及的反应是多样的和复杂的。本文简要介绍了有机多金属化合物光降解的重要性和主要的光降解过程，并重点介绍了有机多金属化合物光降解主要反应的最新研究进展。此外，突出了环境光化学领域的主要知识差距。
Photochemical reactions widely occur in the aquatic environment and play fundamental roles in aquatic eco-systems. In particular, solar-induced photodegradation is efficient for many organic micropollutants (OMPs), especially those that cannot undergo hydrolysis or biodegradation, and thus can mitigate chemical pollution. Recent reports indicate that photodegradation may play a more important role than biodegradation in many OMP transformations in the aquatic environment. Photodegradation can be influenced by the water matrix such as pH, inorganic ions, and dissolved organic matter (DOM). The effect of the water matrix such as DOM on photodegradation is complex, and new insights concerning the disparate effects of DOM have recently been reported. In addition, the photodegradation process is also influenced by physical factors such as latitude, water depth, and temporal variations in sunlight as these factors determine the light conditions. However, it remains challenging to gain an overview of the importance of photodegradation in the aquatic environment because the reactions involved are diverse and complex. Therefore, this review provides a concise summary of the impor-tance of photodegradation and the major processes related to the photodegradation of OMPs, with particular attention given to recent progress on the major reactions of DOM. In addition, major knowledge gaps in this field of environmental photochemistry are highlighted.