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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
Xianli Liu; Dong Xu; Feng Wu; Zhenhuan Liao; Jiantong Liu and Nansheng Deng; Deng, NS, Wuhan Univ, Dept Environm Sci, Wuhan 430072, Peoples R China
2004
Source PublicationPHOTOCHEMISTRY AND PHOTOBIOLOGY
Volume79Issue:3Pages:259-264
AbstractUnder 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.
KeywordPhoto-fenton Reaction Photochemical Formation Natural-waters Rate Constants Fe(Iii)-hydroxy Complex Hydrated Electrons Hydrogen-peroxide Singlet Oxygen Organic-matter Surface Waters
DepartmentWuhan Univ, Dept Environm Sci, Wuhan 430072, Peoples R China; Huangshi Polytech Coll, Huangshi, Peoples R China; Wuhan Univ, Coll Chem & Mol Sci, Wuhan, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China
Subject AreaBiochemistry & Molecular Biology ; Biophysics
Indexed BySCI
WOS IDWOS:000220617100006
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/9526
Collection期刊论文
Corresponding AuthorDeng, NS, Wuhan Univ, Dept Environm Sci, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Xianli Liu,Dong Xu,Feng Wu,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 Xianli Liu,Dong Xu,Feng Wu,Zhenhuan Liao,Jiantong Liu and Nansheng Deng,&Deng, NS, Wuhan Univ, Dept Environm Sci, Wuhan 430072, Peoples R China.(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 Xianli Liu,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.
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