Characteristics of Dissolved Organic Matter and Its Relationship with Water Quality along the Downstream of the Kaidu River in China
The variability in the quality of water that runs along the course of a river, flowing out of a mountain pass, through an agricultural oasis and into a lake, has been a key topic of research in recent years. In this study, the characteristics of dissolved organic matter (DOM) along the river flow, a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/21/3544 |
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| author | Chunyan Cheng Fei Zhang Mou Leong Tan Hsiang-Te Kung Jingchao Shi Qi Zhao Weiwei Wang Pan Duan Changjiang An Yunfei Cai Xingyou Li |
| author_facet | Chunyan Cheng Fei Zhang Mou Leong Tan Hsiang-Te Kung Jingchao Shi Qi Zhao Weiwei Wang Pan Duan Changjiang An Yunfei Cai Xingyou Li |
| author_sort | Chunyan Cheng |
| collection | DOAJ |
| description | The variability in the quality of water that runs along the course of a river, flowing out of a mountain pass, through an agricultural oasis and into a lake, has been a key topic of research in recent years. In this study, the characteristics of dissolved organic matter (DOM) along the river flow, and its relationship with water quality, were analyzed using the Canadian water quality index (<i>CWQI</i>), parallel factor (PARAFAC) and self-organizing map (SOM). The study results include: (1) The conclusion of field sampling along the lower reaches of the Kaidu River and laboratory measurements of water quality parameters, using <i>CWQI</i> to determine the water quality index of the lower Kaidu River, ranging between 59.58 and 93.47. The water quality of the lower reaches of the Kaidu River generally ranges between moderate and good, and can meet the water use requirements of Class II water function standards. (2) The DOM composition of the river predominantly contained three fluorescence components, while the three fluorescence indices of the water body varied less in different river sections. Based on the SOM training model, the fluorescence intensity of the C1 component was larger among the three fluorescence components, followed by the C2 component, and the smallest fluorescence intensity of the C3, which was dominated by humic-like substances, with a high authigenic origin and humification degree. (3) The fluorescence index and fluorescence components were correlated with water quality parameters, and it was found that C1, C2 and C3 were negative and correlated significantly with SO42- and Total-dissolved solids (TDS) concentrations; <i>FI</i>, <i>HIX</i> and <i>BIX</i> showed strong positive correlations with SAL and Cu and negative correlations with dissolved oxygen (DO). This study provides a scientific basis for surface water quality monitoring and water quality pollution management in the Kaidu River. |
| first_indexed | 2024-03-09T18:32:55Z |
| format | Article |
| id | doaj.art-2834e17d0dbf4393b497bdf8b62f71e3 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T18:32:55Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-2834e17d0dbf4393b497bdf8b62f71e32023-11-24T07:21:09ZengMDPI AGWater2073-44412022-11-011421354410.3390/w14213544Characteristics of Dissolved Organic Matter and Its Relationship with Water Quality along the Downstream of the Kaidu River in ChinaChunyan Cheng0Fei Zhang1Mou Leong Tan2Hsiang-Te Kung3Jingchao Shi4Qi Zhao5Weiwei Wang6Pan Duan7Changjiang An8Yunfei Cai9Xingyou Li10College of Geography and Remote Sensing Sciences, Xinjiang University, Urumqi 830046, ChinaCollege of Geography and Remote Sensing Sciences, Xinjiang University, Urumqi 830046, ChinaGeography Section, School of Humanities, Universiti Sains Malaysia, Penang 11800, MalaysiaDepartments of Earth Sciences, The University of Memphis, Memphis, TN 38152, USADepartments of Earth Sciences, The University of Memphis, Memphis, TN 38152, USAXinjiang Bayingolin Mongolian Autonomous Prefecture Environmental Monitoring Station, Korla 841000, ChinaCollege of Geography and Remote Sensing Sciences, Xinjiang University, Urumqi 830046, ChinaCollege of Geography and Remote Sensing Sciences, Xinjiang University, Urumqi 830046, ChinaCollege of Geography and Remote Sensing Sciences, Xinjiang University, Urumqi 830046, ChinaCollege of Geography and Remote Sensing Sciences, Xinjiang University, Urumqi 830046, ChinaCollege of Geography and Remote Sensing Sciences, Xinjiang University, Urumqi 830046, ChinaThe variability in the quality of water that runs along the course of a river, flowing out of a mountain pass, through an agricultural oasis and into a lake, has been a key topic of research in recent years. In this study, the characteristics of dissolved organic matter (DOM) along the river flow, and its relationship with water quality, were analyzed using the Canadian water quality index (<i>CWQI</i>), parallel factor (PARAFAC) and self-organizing map (SOM). The study results include: (1) The conclusion of field sampling along the lower reaches of the Kaidu River and laboratory measurements of water quality parameters, using <i>CWQI</i> to determine the water quality index of the lower Kaidu River, ranging between 59.58 and 93.47. The water quality of the lower reaches of the Kaidu River generally ranges between moderate and good, and can meet the water use requirements of Class II water function standards. (2) The DOM composition of the river predominantly contained three fluorescence components, while the three fluorescence indices of the water body varied less in different river sections. Based on the SOM training model, the fluorescence intensity of the C1 component was larger among the three fluorescence components, followed by the C2 component, and the smallest fluorescence intensity of the C3, which was dominated by humic-like substances, with a high authigenic origin and humification degree. (3) The fluorescence index and fluorescence components were correlated with water quality parameters, and it was found that C1, C2 and C3 were negative and correlated significantly with SO42- and Total-dissolved solids (TDS) concentrations; <i>FI</i>, <i>HIX</i> and <i>BIX</i> showed strong positive correlations with SAL and Cu and negative correlations with dissolved oxygen (DO). This study provides a scientific basis for surface water quality monitoring and water quality pollution management in the Kaidu River.https://www.mdpi.com/2073-4441/14/21/3544dissolved organic matter (DOM)Canadian water quality index (<i>CWQI</i>)parallel factor (PARAFAC)self-organizing map (SOM) |
| spellingShingle | Chunyan Cheng Fei Zhang Mou Leong Tan Hsiang-Te Kung Jingchao Shi Qi Zhao Weiwei Wang Pan Duan Changjiang An Yunfei Cai Xingyou Li Characteristics of Dissolved Organic Matter and Its Relationship with Water Quality along the Downstream of the Kaidu River in China Water dissolved organic matter (DOM) Canadian water quality index (<i>CWQI</i>) parallel factor (PARAFAC) self-organizing map (SOM) |
| title | Characteristics of Dissolved Organic Matter and Its Relationship with Water Quality along the Downstream of the Kaidu River in China |
| title_full | Characteristics of Dissolved Organic Matter and Its Relationship with Water Quality along the Downstream of the Kaidu River in China |
| title_fullStr | Characteristics of Dissolved Organic Matter and Its Relationship with Water Quality along the Downstream of the Kaidu River in China |
| title_full_unstemmed | Characteristics of Dissolved Organic Matter and Its Relationship with Water Quality along the Downstream of the Kaidu River in China |
| title_short | Characteristics of Dissolved Organic Matter and Its Relationship with Water Quality along the Downstream of the Kaidu River in China |
| title_sort | characteristics of dissolved organic matter and its relationship with water quality along the downstream of the kaidu river in china |
| topic | dissolved organic matter (DOM) Canadian water quality index (<i>CWQI</i>) parallel factor (PARAFAC) self-organizing map (SOM) |
| url | https://www.mdpi.com/2073-4441/14/21/3544 |
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