DOM from mariculture ponds exhibits higher reactivity on photodegradation of sulfonamide antibiotics than from offshore seawaters

doi:10.1016/j.watres.2018.07.043

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 盐湖资源与化学实验室

	DOM from mariculture ponds exhibits higher reactivity on photodegradation of sulfonamide antibiotics than from offshore seawaters
	Wang, Jieqiong; Chen, Jingwen; Qiao, Xianliang; Wang, Yan; Cai, Xiyun; Zhou, Chengzhi; Zhang, Yaoling; Ding, Guanghui
刊名	WATER RESEARCH
	2018-11-01
卷号	144 页码:365-372
ISSN号	0043-1354
DOI	10.1016/j.watres.2018.07.043
英文摘要	Mariculture activities and river inputs lead to coastal seawaters with DOM levels that are comparable to or even higher than those in terrestrial water bodies. However, effects of seawater DOM, and especially of DOM occurring in areas impacted by mariculture, on photodegradation of organic micropollutants, are largely unknown. In this study, simulated sunlight irradiation experiments were performed to probe the effects of DOM extracted from mariculture impacted seawaters and from offshore areas, on photo degradation of three sulfonamide antibiotics (SAs). Results show that the SAs are transformed mainly by indirect photodegradation induced by triplet excited DOM ((DOM)-D-3). Compared with DOM from the more pristine coastal waters, the DOM from mariculture impacted areas undergoes less photobleaching, contains higher percentage of humic-like materials and higher proportions of aromatic and carbonyl structures. Thus, the DOM from mariculture areas exhibits higher rates of light absorption, higher formation quantum yields of (DOM)-D-3, higher (DOM)-D-3* steady-state concentrations and higher reactivity on photodegradation of the SAs. Photochemistry of the seawater DOM is different from that reported for freshwater lake DOM. This study highlights the importance of probing the effects of DOM from coastal seawaters on photodegradation of organic micropollutants since coastal seawaters are sinks of many aquatic pollutants. (C) 2018 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/34495]
专题	青海盐湖研究所_盐湖资源与化学实验室
推荐引用方式 GB/T 7714	Wang, Jieqiong,Chen, Jingwen,Qiao, Xianliang,et al. DOM from mariculture ponds exhibits higher reactivity on photodegradation of sulfonamide antibiotics than from offshore seawaters[J]. WATER RESEARCH,2018,144:365-372.
APA	Wang, Jieqiong.,Chen, Jingwen.,Qiao, Xianliang.,Wang, Yan.,Cai, Xiyun.,...&Ding, Guanghui.(2018).DOM from mariculture ponds exhibits higher reactivity on photodegradation of sulfonamide antibiotics than from offshore seawaters.WATER RESEARCH,144,365-372.
MLA	Wang, Jieqiong,et al."DOM from mariculture ponds exhibits higher reactivity on photodegradation of sulfonamide antibiotics than from offshore seawaters".WATER RESEARCH 144(2018):365-372.