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1. Effects of halide ions on photodegradation of sulfonamide antibiotics: Formation of halogenated intermediates

Author:
Zhou, Chengzhi,   et al.   ; Li, Yingjie; Qiao, Xianliang; Zhang, Ya-nan; Xie, Huaijun; Chen, Jingwen;     Show all 6 Authors
Source:
Water research 2016
ISSN:
0043-1354
Subject:
antibiotics; brackish water; chlorides; environmental assessment; environmental fate; estuaries; free radicals; ionic strength; ions; marine environment; oxidation; photolysis; pollutants; risk; risk assessment; seawater; sulfamethoxazole; sulfapyridine
Abstract:
... The occurrence of sulfonamide antibiotics (SAs) in estuarine waters urges insights into their environmental fate for ecological risk assessment. Although many studies focused on the photochemical behavior of SAs, yet the effects of halide ions relevant to estuarine and marine environments on their photodegradation have been poorly understood. Here, we investigated the effects of halide ions on the ...
DOI:
10.1016/j.watres.2016.06.054

2. Effects of dissolved organic matter on phototransformation rates and dioxin products of triclosan and 2′-HO-BDE-28 in estuarine water

Author:
Zhou, Chengzhi,   et al.   ; Zhang, Ya-nan; Xie, Qing; Sun, Guoxin; Yang, Kuixing; Song, Shuainan; Chen, Jingwen; Li, Yingjie;     Show all 8 Authors
Source:
Environmental science 2016 v.18 no.9 pp. 1177-1184
ISSN:
2050-7895
Subject:
aquatic environment; brackish water; chlorides; dioxins; dissolved organic matter; free radicals; hydroxylation; photolysis; pollutants; rivers; screening; toxicity; triclosan
Abstract:
... Photochemical transformation of hydroxylated polyhalodiphenyl ethers (HO-PXDEs) has attracted much attention for their ubiquitous presence and the photochemical formation of highly toxic dioxins. Dissolved organic matter (DOM) plays an important role in the environmental photochemical transformation of organic pollutants. However, the effects of DOM on the photolysis kinetics and dioxin formation ...
DOI:
10.1039/c6em00122j