Spatial variation of dissolved organic matter in the Tuojiang River Basin in Chengdu, China: insights based on EEMs–PARAFAC analysis
Three-dimensional excitation–emission matrix fluorescence spectroscopy coupled with parallel factor analysis was adopted to investigate the characteristics of dissolved organic matter (DOM) components in water samples collected from the Tuojiang River Basin in Chengdu, including its main stream and...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-09-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/88/5/1178 |
| _version_ | 1797682166925099008 |
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| author | Xiaxia Li Beibei Chai Chao Wang Hongtao Li Yong Wu Xiaohui Lei Bin Chen |
| author_facet | Xiaxia Li Beibei Chai Chao Wang Hongtao Li Yong Wu Xiaohui Lei Bin Chen |
| author_sort | Xiaxia Li |
| collection | DOAJ |
| description | Three-dimensional excitation–emission matrix fluorescence spectroscopy coupled with parallel factor analysis was adopted to investigate the characteristics of dissolved organic matter (DOM) components in water samples collected from the Tuojiang River Basin in Chengdu, including its main stream and tributaries. Four DOM components that matched with three fluorescence peaks were identified in the whole river basin and tributaries; while three components corresponding to four fluorescence peaks were identified in the main stream. In all cases, humic-like components accounted for high proportions of the DOM. Correlation analysis revealed the same sources for four components in the whole river basin and its tributaries, whereas two components had different sources in the main stream. Ultraviolet absorbance parameters (SUVA254, SR) and fluorescence parameters (BIX, HIX, FI, β:α) indicated the dominant autochthonous sources of DOM in the whole river basin. Higher terrestrial inputs of DOM were observed in the tributaries than in the main stream. In the areas influenced by human activities (6#, 17#, 18#), the sources of DOM showed strong terrestrial characteristics and high degrees of humification and aromatization, as well as serious pollution. The results of this study have potentially far-reaching implications for environmental water management in the area.
HIGHLIGHTS
DOM of water body can be analyzed by EEMs–PARAFAC analysis.;
The areas with industrial and agricultural emission sources and those affected by human activities have higher degrees of humification and aromatization and are seriously polluted.;
DOM sources in the Tuojiang River Basin in Chengdu were mainly internal, and the terrigenous input of DOM in tributaries was significantly higher than that in the main stream.; |
| first_indexed | 2024-03-11T23:55:38Z |
| format | Article |
| id | doaj.art-fb346b86655c464f9de46ec3d9bdcae1 |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-03-11T23:55:38Z |
| publishDate | 2023-09-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-fb346b86655c464f9de46ec3d9bdcae12023-09-18T15:30:23ZengIWA PublishingWater Science and Technology0273-12231996-97322023-09-018851178119310.2166/wst.2023.267267Spatial variation of dissolved organic matter in the Tuojiang River Basin in Chengdu, China: insights based on EEMs–PARAFAC analysisXiaxia Li0Beibei Chai1Chao Wang2Hongtao Li3Yong Wu4Xiaohui Lei5Bin Chen6 Collaborative Innovation Center for Intelligent Regulation & Comprehensive Management of Water Resources, College of Water Resources and Hydropower, Hebei University of Engineering, Handan 056038, China Collaborative Innovation Center for Intelligent Regulation & Comprehensive Management of Water Resources, College of Water Resources and Hydropower, Hebei University of Engineering, Handan 056038, China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China Chengdu University of Technology, Chengdu 610059, China Chengdu University of Technology, Chengdu 610059, China State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China Three-dimensional excitation–emission matrix fluorescence spectroscopy coupled with parallel factor analysis was adopted to investigate the characteristics of dissolved organic matter (DOM) components in water samples collected from the Tuojiang River Basin in Chengdu, including its main stream and tributaries. Four DOM components that matched with three fluorescence peaks were identified in the whole river basin and tributaries; while three components corresponding to four fluorescence peaks were identified in the main stream. In all cases, humic-like components accounted for high proportions of the DOM. Correlation analysis revealed the same sources for four components in the whole river basin and its tributaries, whereas two components had different sources in the main stream. Ultraviolet absorbance parameters (SUVA254, SR) and fluorescence parameters (BIX, HIX, FI, β:α) indicated the dominant autochthonous sources of DOM in the whole river basin. Higher terrestrial inputs of DOM were observed in the tributaries than in the main stream. In the areas influenced by human activities (6#, 17#, 18#), the sources of DOM showed strong terrestrial characteristics and high degrees of humification and aromatization, as well as serious pollution. The results of this study have potentially far-reaching implications for environmental water management in the area. HIGHLIGHTS DOM of water body can be analyzed by EEMs–PARAFAC analysis.; The areas with industrial and agricultural emission sources and those affected by human activities have higher degrees of humification and aromatization and are seriously polluted.; DOM sources in the Tuojiang River Basin in Chengdu were mainly internal, and the terrigenous input of DOM in tributaries was significantly higher than that in the main stream.;http://wst.iwaponline.com/content/88/5/1178chengdu sectionfluorescent componentsfluorescence parametermain stream–tributary differenceparallel factor analysistuojiang river basin |
| spellingShingle | Xiaxia Li Beibei Chai Chao Wang Hongtao Li Yong Wu Xiaohui Lei Bin Chen Spatial variation of dissolved organic matter in the Tuojiang River Basin in Chengdu, China: insights based on EEMs–PARAFAC analysis Water Science and Technology chengdu section fluorescent components fluorescence parameter main stream–tributary difference parallel factor analysis tuojiang river basin |
| title | Spatial variation of dissolved organic matter in the Tuojiang River Basin in Chengdu, China: insights based on EEMs–PARAFAC analysis |
| title_full | Spatial variation of dissolved organic matter in the Tuojiang River Basin in Chengdu, China: insights based on EEMs–PARAFAC analysis |
| title_fullStr | Spatial variation of dissolved organic matter in the Tuojiang River Basin in Chengdu, China: insights based on EEMs–PARAFAC analysis |
| title_full_unstemmed | Spatial variation of dissolved organic matter in the Tuojiang River Basin in Chengdu, China: insights based on EEMs–PARAFAC analysis |
| title_short | Spatial variation of dissolved organic matter in the Tuojiang River Basin in Chengdu, China: insights based on EEMs–PARAFAC analysis |
| title_sort | spatial variation of dissolved organic matter in the tuojiang river basin in chengdu china insights based on eems parafac analysis |
| topic | chengdu section fluorescent components fluorescence parameter main stream–tributary difference parallel factor analysis tuojiang river basin |
| url | http://wst.iwaponline.com/content/88/5/1178 |
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