DOI: 10.1016/j.watres.2018.04.006
Scopus记录号: 2-s2.0-85047400047
论文题名: Differential UV–vis absorbance can characterize the reaction of organic matter with ClO2
作者: Huang S. ; Gan W. ; Yan M. ; Zhang X. ; Zhong Y. ; Yang X.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 139 起始页码: 442
结束页码: 449
语种: 英语
英文关键词: Absorbance
; Chlorine dioxide
; Chlorite
; Differential spectra
; Humic substances
; Water treatment
Scopus关键词: Aromatic compounds
; Aromatization
; Biogeochemistry
; Biological materials
; Chemicals removal (water treatment)
; Driers (materials)
; Oxidation
; Surface waters
; Water quality
; Water treatment
; Absorbances
; Chlorine dioxides
; Chlorite
; Differential spectra
; Humic substances
; Chlorine compounds
; aromatic compound
; chlorine dioxide
; drinking water
; organic matter
; surface water
; chlorine derivative
; chlorine dioxide
; organic compound
; oxide
; absorbance
; chemical compound
; chemical reaction
; chlorite
; degradation
; humic substance
; organic matter
; oxidation
; spectroscopy
; spectrum
; ultraviolet radiation
; water treatment
; analytic method
; Article
; chlorination
; humic substance
; oxidation
; priority journal
; ultraviolet spectroscopy
; water quality
; water sampling
; water treatment
; chemistry
; halogenation
; humic substance
; oxidation reduction reaction
; procedures
; river
; ultraviolet spectrophotometry
; water management
; water pollutant
; Chlorine Compounds
; Halogenation
; Humic Substances
; Organic Chemicals
; Oxidation-Reduction
; Oxides
; Rivers
; Spectrophotometry, Ultraviolet
; Water Pollutants
; Water Purification
英文摘要: UV–vis differential spectroscopy was applied to characterize and quantify the spectral changes after ClO2 oxidation of ten humic substances, seven aromatic model compounds and four surface waters. The differential spectra of ten humic substances after ClO2 oxidation all exhibited a peak near 230 nm and a broad absorbance band with a maximum at around 316 nm. The differential spectra after ClO2 oxidation were distinguished from the one after chlorination, which was indicative of their different oxidation mechanisms. The differential spectra after ClO2 treatment were well fitted by seven Gaussian bands with maxima at about 200, 225, 240, 276, 316, 385 and 457 nm. Differential absorbance at 316 nm and 400 nm (denoted as DA316 and DA400, respectively) were found to best quantify the degradation of organic matters during ClO2 oxidation with negligible interferences from water matrixes. Oxidation of substituted functional groups on aromatic structures, rather than destruction of aromatic rings, was more responsible for chlorite formation. Spectral parameters–DA316 and DA400 showed strong correlations with ClO2 consumption and chlorite formation during ClO2 oxidation of humic substances and surface water samples. The results demonstrate that DA316 and DA400 can serve as promising indicators of chlorite formation and ClO2 consumption, which provide a practical approach for online water quality monitoring during ClO2 water purification. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112746
Appears in Collections: 气候减缓与适应
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作者单位: School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China; The Key Laboratory of Water and Sediment Sciences, Department of Environmental Engineering, Peking University, Beijing, 100871, China
Recommended Citation:
Huang S.,Gan W.,Yan M.,et al. Differential UV–vis absorbance can characterize the reaction of organic matter with ClO2[J]. Water Research,2018-01-01,139