Photodegradation of diphenylarsinic acid by UV-C light: Implication for its remediation

doi:10.1016/j.jhazmat.2016.01.049

	Photodegradation of diphenylarsinic acid by UV-C light: Implication for its remediation
	Wang, AA ; Teng, Y ; Hu, XF; Wu, LH ; Huang, YJ ; Luo, YM; Christie, P ; Luo, YM (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China. ymluo@yic.ac.cn
发表期刊	JOURNAL OF HAZARDOUS MATERIALS
ISSN	0304-3894
	2016-05-05
卷号	308 页码:199-207
关键词	Diphenylarsinic Acid Photodegradation Electron Paramagnetic Resonance Pseudo-first-order Kinetics
DOI	10.1016/j.jhazmat.2016.01.049
产权排序	[Wang, Anan; Teng, Ying; Wu, Longhua; Huang, Yujuan; Luo, Yongming; Christie, Peter] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; [Hu, Xuefeng; Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Processes & Ecol Re, Yantai 264003, Peoples R China
作者部门	中科院海岸带环境过程与生态修复重点实验室
英文摘要	Diphenylarsinic acid (DPAA) is a major contaminant in environments polluted by chemical weapons and abandoned after World Wars I and II and poses high risks to biota but remediation methods for this contaminant are rare. Here, the photodegradtion of DPAA was studied under high-pressure Hg lamp irradiation. DPAA was degraded completely into inorganic arsenic species in 30 min under UV-C irradiation. The photodegradation of DPAA depended mainly on its direct photolysis through excited-state DPAA. By contrast, the generation of O-1(2) during the photodegradation of DPAA was confirmed by electron paramagnetic resonance (EPR) studies, but O-1(2) had little effect on the photodegradation of DPAA. Phtotodegradation of DPAA was also studied in soil leachates and groundwater and the photolytic rate of DPAA was controlled by the total organic carbon (TOC) content in soil leachates and by the NO3- concentration in groundwater. Finally, studies on the effects of common solutes on the photodegradation of DPAA show that Cl- can increase the photolytic rate of DPAA by prolonging the lifetime of excited state DPAA. Moreover, NO3-, NO2-, and humic acid (HA) can decrease the photolytic rate of DPAA by suppressing the production of excited-state DPAA. This research shows the detailed mechanism of DPAA photodegradation and provides a new and effective method for DPAA decontamination. (C) 2016 Elsevier B.V. All rights reserved.
文章类型	Article
资助机构	National Natural Science Foundation of China(41230858 ; 41171248 ; 41571310)
收录类别	SCI
语种	英语
关键词[WOS]	CHEMICAL WARFARE AGENTS ; ZEA-MAYS L. ; PHOTOCHEMICAL DEGRADATION ; ORGANIC-MATTER ; PHENYLARSONIC ACID ; ADVANCED OXIDATION ; AQUEOUS-SOLUTION ; ARSANILIC ACID ; BY-PRODUCTS ; WATER
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology
WOS记录号	WOS:000374803600025
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/17051
专题	中国科学院海岸带环境过程与生态修复重点实验室
通讯作者	Luo, YM (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China. ymluo@yic.ac.cn
作者单位	1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Processes & Ecol Re
推荐引用方式 GB/T 7714	Wang, AA,Teng, Y,Hu, XF,et al. Photodegradation of diphenylarsinic acid by UV-C light: Implication for its remediation[J]. JOURNAL OF HAZARDOUS MATERIALS,2016,308:199-207.
APA	Wang, AA.,Teng, Y.,Hu, XF.,Wu, LH.,Huang, YJ.,...&Luo, YM .(2016).Photodegradation of diphenylarsinic acid by UV-C light: Implication for its remediation.JOURNAL OF HAZARDOUS MATERIALS,308,199-207.
MLA	Wang, AA,et al."Photodegradation of diphenylarsinic acid by UV-C light: Implication for its remediation".JOURNAL OF HAZARDOUS MATERIALS 308(2016):199-207.

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