Ministry of Ecology and Environment, Nanjing Institute of Environmental Sciences, Nanjing, 210042, China.
State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, Jiangsu, China.
Bull Environ Contam Toxicol. 2024 Oct 11;113(4):51. doi: 10.1007/s00128-024-03953-3.
Both ibuprofen (IBP) and chlorophene (CP) are frequently detected contaminants in surface aqueous environment. Dissolved organic matter (DOM) is an important component in water with high photo-reactivity, playing an important role in the transformation processes of various organic pollutants. This study systematically studied the influence of DOM on the photochemical transformation of IBP and CP by using humic acid as model DOM. In addition, the effect of inorganic salts on this process is also considered due to the high salt content in the ocean. Further quenching experiments and reactive oxygen species (ROSs) detection were also conducted to explore the reactive species acting on the IBP and CP transformation. Based on the products analysis and theoretical calculation, we proposed the IBP and CP transformation mechanism. Overall, this study provides some new insights into the transformation of organic pollutants in natural surface water, which is significant for assessing the fate of pollutants.
布洛芬（IBP）和氯苯氧酸（CP）都是经常在地表水环境中检测到的污染物。溶解有机质（DOM）是水中具有高光反应性的重要组成部分，在各种有机污染物的转化过程中起着重要作用。本研究系统地研究了 DOM 对布洛芬和氯苯氧酸光化学转化的影响，使用腐殖酸作为模型 DOM。此外，由于海洋中的盐分含量较高，还考虑了无机盐对这一过程的影响。进一步的猝灭实验和活性氧（ROS）检测也进行了探索对 IBP 和 CP 转化起作用的活性物质。基于产物分析和理论计算，提出了 IBP 和 CP 的转化机制。总的来说，这项研究为评估污染物的归宿提供了一些关于天然地表水中有机污染物转化的新见解。
