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 |
显示于类别: | Articles |