Preliminary study on the photoproduction of hydroxyl radicals in aqueous solution with Aldrich humic acid, algae and Fe(III) under high-pressure mercury lamp irradiation

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	Preliminary study on the photoproduction of hydroxyl radicals in aqueous solution with Aldrich humic acid, algae and Fe(III) under high-pressure mercury lamp irradiation
	Liu, XL ; Xu, D ; Wu, F ; Liao, ZH ; Liu, JT ; Deng, NS
刊名	PHOTOCHEMISTRY AND PHOTOBIOLOGY
	2004-03-01
卷号	79 期号:3 页码:259-264
关键词	PHOTO-FENTON REACTION PHOTOCHEMICAL FORMATION NATURAL-WATERS RATE CONSTANTS FE(III)-HYDROXY COMPLEX HYDRATED ELECTRONS HYDROGEN-PEROXIDE SINGLET OXYGEN ORGANIC-MATTER SURFACE WATERS
ISSN号	0031-8655
通讯作者	Deng, NS, Wuhan Univ, Dept Environm Sci, Wuhan 430072, Peoples R China
中文摘要	Under a high-pressure mercury lamp (HPML) and using an exposure time of 4 h, the photoproduction of hydroxyl radicals ((OH)-O-.) could be induced in an aqueous solution containing humic acid (HA). Hydroxyl radicals were determined by high-performance liquid chromatography using benzene as a probe. The results showed that (OH)-O-. photoproduction increased from 1.80 to 2.74 muM by increasing the HA concentration from 10 to 40 mg L-1 at an exposure time of 4 h (pH 6.5). Hydroxyl radical photoproduction in aqueous solutions of HA containing algae was greater than that in the aqueous solutions of HA without algae. The photoproduction of (OH)-O-. in the HA solution with Fe(111) was greater than that of the solution without Fe(III) at pH ranging from 4.0 to 8.0. The photoproduction of (OH)-O-. in HA solution with algae with or without Fe(111) under a 250 W HPML was greater than that under a 125 W HPML. The photoproduction of (OH)-O-. in irradiated samples was influenced by the pH. The results showed that HPML exposure for 4 h in the 4-8 pH range led to the highest (OH)-O-. photoproduction at pH 4.0.
英文摘要	Under a high-pressure mercury lamp (HPML) and using an exposure time of 4 h, the photoproduction of hydroxyl radicals ((OH)-O-.) could be induced in an aqueous solution containing humic acid (HA). Hydroxyl radicals were determined by high-performance liquid chromatography using benzene as a probe. The results showed that (OH)-O-. photoproduction increased from 1.80 to 2.74 muM by increasing the HA concentration from 10 to 40 mg L-1 at an exposure time of 4 h (pH 6.5). Hydroxyl radical photoproduction in aqueous solutions of HA containing algae was greater than that in the aqueous solutions of HA without algae. The photoproduction of (OH)-O-. in the HA solution with Fe(111) was greater than that of the solution without Fe(III) at pH ranging from 4.0 to 8.0. The photoproduction of (OH)-O-. in HA solution with algae with or without Fe(111) under a 250 W HPML was greater than that under a 125 W HPML. The photoproduction of (OH)-O-. in irradiated samples was influenced by the pH. The results showed that HPML exposure for 4 h in the 4-8 pH range led to the highest (OH)-O-. photoproduction at pH 4.0.
学科主题	Biochemistry & Molecular Biology; Biophysics
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Biochemistry & Molecular Biology ; Biophysics
研究领域[WOS]	Biochemistry & Molecular Biology ; Biophysics
关键词[WOS]	PHOTO-FENTON REACTION ; PHOTOCHEMICAL FORMATION ; NATURAL-WATERS ; RATE CONSTANTS ; FE(III)-HYDROXY COMPLEX ; HYDRATED ELECTRONS ; HYDROGEN-PEROXIDE ; SINGLET OXYGEN ; ORGANIC-MATTER ; SURFACE WATERS
收录类别	SCI
语种	英语
WOS记录号	WOS:000220617100006
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/9526]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Wuhan Univ, Dept Environm Sci, Wuhan 430072, Peoples R China 2.Huangshi Polytech Coll, Huangshi, Peoples R China 3.Wuhan Univ, Coll Chem & Mol Sci, Wuhan, Peoples R China 4.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Liu, XL,Xu, D,Wu, F,et al. Preliminary study on the photoproduction of hydroxyl radicals in aqueous solution with Aldrich humic acid, algae and Fe(III) under high-pressure mercury lamp irradiation[J]. PHOTOCHEMISTRY AND PHOTOBIOLOGY,2004,79(3):259-264.
APA	Liu, XL,Xu, D,Wu, F,Liao, ZH,Liu, JT,&Deng, NS.(2004).Preliminary study on the photoproduction of hydroxyl radicals in aqueous solution with Aldrich humic acid, algae and Fe(III) under high-pressure mercury lamp irradiation.PHOTOCHEMISTRY AND PHOTOBIOLOGY,79(3),259-264.
MLA	Liu, XL,et al."Preliminary study on the photoproduction of hydroxyl radicals in aqueous solution with Aldrich humic acid, algae and Fe(III) under high-pressure mercury lamp irradiation".PHOTOCHEMISTRY AND PHOTOBIOLOGY 79.3(2004):259-264.