标题: Probing algogenic organic matter (AOM) by size-exclusion chromatography to predict AOM-derived disinfection by-product formation
作者: Hua, Lap-Cuong
Lin, Jr-Lin
Chao, Shu-Ju
Huang, Chihpin
环境工程研究所
Institute of Environmental Engineering
关键字: Eutrophication;Algogenic organic matter;Disinfection byproducts;Chlorination;Size exclusion chromatography
公开日期: 15-十二月-2018
摘要: High-performance size exclusion chromatography (HPSEC) coupled with peak-fitting technique was used to probe molecular weight (MW) properties of algogenic organic matter (AOM). The qualitative and quantitative MW information derived was used to predict AOM-derived disinfection by-product (DBP) formation. We resolved overlapping HPSEC chromatograms of all AOM samples into six major peaks with R-2 > 0.996. This study gave significant insight into the HPSEC profiles of AOM, in which resolved peaks A and B (biopolymers) and peak C (humic substances) showed a strong correlation with the formation of carbonaceous-DBPs (C-DBPs). This likely resulted from the abundance of aromatic structures and conjugated C=C double bonds in their chemical nature. Our results also indicated the importance of algal cells, including intra-cellular and cell-bound organic matter, over extra-cellular organic matter as precursors to C-DBP formation. The application of the information extracted from HPSEC profiles associated with the fluorescent components of AOM showed great improvements in the predictability of THMs, HAAs, and C-DBPs with R-2 > 0.7 and p < 0.05. The outcome of this study will significantly benefit effective control of AOM-derived DBP formation by the chlorination of eutrophic waters. (C) 2018 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.scitotenv.2018.07.100
http://hdl.handle.net/11536/148176
ISSN: 0048-9697
DOI: 10.1016/j.scitotenv.2018.07.100
期刊: SCIENCE OF THE TOTAL ENVIRONMENT
Volume: 645
起始页: 71
结束页: 78
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