Application of a new combined fractionation technique (CFT) to detect fluorophores in size-fractionated hydrophobic acid of DOM as indicators of urban pollution

For pollution monitoring, we developed a new combined fractionation technique (CFT) to characterize dissolved organic matter (DOM) in natural water by combining resin adsorption (RA) and ultrafiltration (UF) with 3D-fluorescence measurement. We tested the new technique on 4 polluted and 4 unpolluted...

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Bibliographic Details
Published in:The Science of the total environment 2012-08, Vol.431, p.293-298
Main Authors: Wei, Qunshan, Yan, Changzhou, Luo, Zhuanxi, Zhang, Xian, Xu, Qiujin, Chow, Christopher W.K.
Format: Article
Language:English
Subjects:
acids
Adsorption
Analysis methods
Applied sciences
Chemical Fractionation
China
Deterioration
Dissolved organic matter
Dissolved organic matter (DOM)
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Environmental Monitoring - methods
Exact sciences and technology
Fluorescence
Fractionation
Indicators
Indicators and Reagents
Molecular Weight
Natural water pollution
new methods
Pollution
Pollution abatement
Pollution monitoring
Pollution, environment geology
Source water
Tryptophan - analysis
Ultrafiltration
Urban pollution
Urban Renewal
Water pollution
Water Pollution - analysis
water quality
Water treatment and pollution
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Summary:For pollution monitoring, we developed a new combined fractionation technique (CFT) to characterize dissolved organic matter (DOM) in natural water by combining resin adsorption (RA) and ultrafiltration (UF) with 3D-fluorescence measurement. We tested the new technique on 4 polluted and 4 unpolluted samples. The 3D-fluorescence characteristics of size sub-components in the hydrophobic acid (HPOA) fraction could distinguish unpolluted from polluted DOM. The unpolluted HPOA fraction was composed of a single dominant size component—peak A (fulvic-like, around Ex240/Em410nm) material with relatively large molecular weight (MW) (>10kDa). In comparison, the HPOA in polluted DOM contained another predominant size component with lower MW (
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2012.05.078