Photodegradation of Chlorinated Persistent Organic Pollutants (Cl-POPs) in Pearl River Suspended Particulate Matter-Water Systems: Kinetics, Quantitative Structure-Activity Relationship (QSAR) Development, and Mechanism.

• Tác giả: Ruijuan Qu, Xiaolei Teng, Zunyao Wang, Jianqiao Xu
• Ngôn ngữ: eng
• Thông tin xuất bản: United States : Environmental science & technology , 2025
• Bộ sưu tập: NCBI
• ID: 213608

Tóm tắt

Chlorinated persistent organic pollutants (Cl-POPs) are highly hydrophobic and are easily adsorbed to solid particulate matter after being released into the water column, thus affecting the transformation process and environmental fate. This study investigated the photodegradation behavior of 16 Cl-POPs in the Pearl River suspended particulate matter (SPM)-water system. The photodegradation rates of polychlorinated biphenyls (PCBs) were generally higher than those of dioxins and increased with substitution numbers of Cl atoms. A QSAR model correlating photodegradation rate constants of Cl-POPs and their structural parameters was established by using multiple linear regression (MLR) analysis and machine learning. The model results showed that soil-water partition coefficient (