Influence of Dissolved Oxygen, Water Level and Temperature on Dissolved Organic Carbon in Coastal Groundwater
The quality of groundwater has been severely impacted by urbanization around coasts. The change in climate and land use patterns has deteriorated the quality and availability of groundwater. One of the main issues in contemporary groundwater quality research is dissolved organic carbon (DOC) in the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Hydrology |
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| Online Access: | https://www.mdpi.com/2306-5338/10/4/85 |
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| author | Thilagavathi Rajendiran Chidambaram Sabarathinam Banajarani Panda Vetrimurugan Elumalai |
| author_facet | Thilagavathi Rajendiran Chidambaram Sabarathinam Banajarani Panda Vetrimurugan Elumalai |
| author_sort | Thilagavathi Rajendiran |
| collection | DOAJ |
| description | The quality of groundwater has been severely impacted by urbanization around coasts. The change in climate and land use patterns has deteriorated the quality and availability of groundwater. One of the main issues in contemporary groundwater quality research is dissolved organic carbon (DOC) in the water. The influence of DO, water level and water temperature on DOC in groundwater was identified in the current study by sampling 68 groundwater samples. The analytical results revealed that ~18% of total samples have DOC > 5 mg/L. The groundwater samples represented in the urban regions show high DOC. The samples with higher DOC correlated positively with dissolved inorganic ions, such as Ca, K, NO<sub>3</sub>, Fe and DO. Domestic wastewater, agricultural runoff and local geology all have an impact on the DOC of groundwater. Groundwater chemistry is shown to be controlled by both aerobic and anaerobic conditions based on the DOC’s interactions with other ions. The study interrelates various sources, such as land use, geology, water level and temperature, to the DOC in groundwater and infers that the levels are higher in shallow groundwater, predominantly around the built-up region followed by the agricultural region. The temperature changes enhance the DOC in groundwater due to the variation in microbial activity. The shallow water level with a lower temperature shows the maximum DOC. Apart from the sediment organic matter and microbes, the study also attributes land use pattern to the source of DOC in groundwater. |
| first_indexed | 2024-03-11T04:58:35Z |
| format | Article |
| id | doaj.art-f1b2cc68f1ff467897b698a7cdabe5e8 |
| institution | Directory Open Access Journal |
| issn | 2306-5338 |
| language | English |
| last_indexed | 2024-03-11T04:58:35Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Hydrology |
| spelling | doaj.art-f1b2cc68f1ff467897b698a7cdabe5e82023-11-17T19:30:20ZengMDPI AGHydrology2306-53382023-04-011048510.3390/hydrology10040085Influence of Dissolved Oxygen, Water Level and Temperature on Dissolved Organic Carbon in Coastal GroundwaterThilagavathi Rajendiran0Chidambaram Sabarathinam1Banajarani Panda2Vetrimurugan Elumalai3Department of Geology, V.O. Chidambaram College, Tuticorin 628008, IndiaWater Research Center, Kuwait Institute for Scientific Research, Kuwait City 13109, KuwaitDepartment of Geology, Ravenshaw University, Cuttack 753003, IndiaDepartment of Hydrology, University of Zululand, Kwa Dlangezwa 3886, South AfricaThe quality of groundwater has been severely impacted by urbanization around coasts. The change in climate and land use patterns has deteriorated the quality and availability of groundwater. One of the main issues in contemporary groundwater quality research is dissolved organic carbon (DOC) in the water. The influence of DO, water level and water temperature on DOC in groundwater was identified in the current study by sampling 68 groundwater samples. The analytical results revealed that ~18% of total samples have DOC > 5 mg/L. The groundwater samples represented in the urban regions show high DOC. The samples with higher DOC correlated positively with dissolved inorganic ions, such as Ca, K, NO<sub>3</sub>, Fe and DO. Domestic wastewater, agricultural runoff and local geology all have an impact on the DOC of groundwater. Groundwater chemistry is shown to be controlled by both aerobic and anaerobic conditions based on the DOC’s interactions with other ions. The study interrelates various sources, such as land use, geology, water level and temperature, to the DOC in groundwater and infers that the levels are higher in shallow groundwater, predominantly around the built-up region followed by the agricultural region. The temperature changes enhance the DOC in groundwater due to the variation in microbial activity. The shallow water level with a lower temperature shows the maximum DOC. Apart from the sediment organic matter and microbes, the study also attributes land use pattern to the source of DOC in groundwater.https://www.mdpi.com/2306-5338/10/4/85groundwaterdissolved organic carboninorganic ionswater leveltemperature |
| spellingShingle | Thilagavathi Rajendiran Chidambaram Sabarathinam Banajarani Panda Vetrimurugan Elumalai Influence of Dissolved Oxygen, Water Level and Temperature on Dissolved Organic Carbon in Coastal Groundwater Hydrology groundwater dissolved organic carbon inorganic ions water level temperature |
| title | Influence of Dissolved Oxygen, Water Level and Temperature on Dissolved Organic Carbon in Coastal Groundwater |
| title_full | Influence of Dissolved Oxygen, Water Level and Temperature on Dissolved Organic Carbon in Coastal Groundwater |
| title_fullStr | Influence of Dissolved Oxygen, Water Level and Temperature on Dissolved Organic Carbon in Coastal Groundwater |
| title_full_unstemmed | Influence of Dissolved Oxygen, Water Level and Temperature on Dissolved Organic Carbon in Coastal Groundwater |
| title_short | Influence of Dissolved Oxygen, Water Level and Temperature on Dissolved Organic Carbon in Coastal Groundwater |
| title_sort | influence of dissolved oxygen water level and temperature on dissolved organic carbon in coastal groundwater |
| topic | groundwater dissolved organic carbon inorganic ions water level temperature |
| url | https://www.mdpi.com/2306-5338/10/4/85 |
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