Sources and geochemistry of high fluoride groundwater in hard rock aquifer of the semi-arid region. A special focus on human health risk assessment Karung Phaisonreng Kom, B. Gurugnanam, S. Bairavi, S. Chidambaram Total Environment Research Themes, 2023 Groundwater is essential for domestic and irrigation purposes in arid and semi-arid regions. However, improper management leads to a detrimental effect on human health. The study aimed to determine the quality of the groundwater and the human health hazards posed by fluoride. The fluoride concentration in groundwater samples varies from 0.04 to 1.8 mg per litre (0.72 mg/L on average). The hydrogeochemical analysis reveals that 11 % of groundwater samples exceeded the WHO drinking water permissible limit (1.5 mg/L). A higher concentration of fluoride ions is observed in the hornblende biotite gneiss, charnockites and granitic rocks. The samples were dominantly alkaline in nature, the samples with higher fluoride (F-) were observed to be mixed Ca-Mg-Cl type. The interaction between water and rock formations significantly impacts high F- in groundwater. The Pollution Index of Groundwater (PIG) indicates that 3 % of samples were highly polluted, and 2 % were under the very high pollution category. The US Environmental Protection Agency (USEPA) technique was used to assess the potential health hazard posed by high fluoride groundwater. The results revealed that oral fluoride exposure is much higher than dermal contact. The Total Hazard Index (THI) values indicate that children (48 %) and females (13 %) were more susceptible as the values surpassed the standard limit (THI = 1). The findings also indicated a higher possibility of children being affected by fluoride's non-carcinogenic health hazards due to physiological factors and intake rates.
Non-carcinogenic health risk assessment of nitrate and fluoride contamination in the groundwater of Noyyal basin, India Karung Phaisonreng Kom, Balasubramanian Gurugnanam, Swaminathan Bairavi Geodesy and Geodynamics, 2022 The study aims to assess the nitrate and fluoride concentration in groundwater and its adverse effects on human health. In 2019, 42 groundwater samples were collected from various bore wells within the western Noyyal basin, India. Sodium and chloride are the dominant cation and anion, respectively. The nitrate concentration in groundwater samples varies from 2 to 89 mg/L, of which 33.33% are above the permissible limit of 45 mg/L for drinking water. The fluoride concentration ranges from 0.2 to 2.4 mg/L, with 28.57% of the samples exceeding the safe value of 1.5 mg/L for drinking water. Correlation plots demonstrate that the potential of hydrogen (pH), electrical conductivity (EC), total dissolved solids (TDS), Na+ and HCO3− are positively correlated with F−, whereas Ca2+ is negatively correlated. Mixed Ca–Mg–Cl is the most common water type in the investigated region. The Gibbs diagram demonstrates that the interaction between rock and water impacts the groundwater chemistry. Using the method of the United States Environmental Production Agency (USEPA), this study assesses the non-carcinogenic health risk posed by nitrate and fluoride in different age groups (infants, children, and adults). The values of total hazard index (THI) vary from 0.59 to 10.07 (mean = 4.76) for infants, 0.36 to 6.23 (mean = 2.95) for children, and 0.19 to 3.32 (mean = 1.57) for adults. Furthermore, 97.62%, 92.86%, and 73.81% of the samples surpass the recommended limit (THI = 1) for infants, children, and adults, respectively. Thus, the health risk assessment (HRA) indicates that infants and children are more susceptible to non-carcinogenic health hazards than adults. The THI spatial variation map shows that central and southern regions of the study area have been identified as high health risk areas (THI >3.0) for all age groups.
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Total Environment Research Themes KP Kom, B Gurugnanam, S Bairavi, S Chidambaram
MOST CITED SCHOLAR PUBLICATIONS
Delineation of groundwater potential zones using GIS and AHP techniques in Coimbatore district, South India KP Kom, B Gurugnanam, V Sunitha International Journal of Energy and Water Resources 8 (1), 85-109 , 2024 2024.0 Citations: 73
Non-carcinogenic health risk assessment of nitrate and fluoride contamination in the groundwater of Noyyal basin, India KP Kom, B Gurugnanam, S Bairavi Geodesy and Geodynamics 13 (6), 619-631 , 2022 2022.0 Citations: 63
Sources and geochemistry of high fluoride groundwater in hard rock aquifer of the semi-arid region. A special focus on human health risk assessment KP Kom, B Gurugnanam, S Bairavi, S Chidambaram Total Environment Research Themes 5, 100026 , 2023 2023.0 Citations: 39
Hydrogeochemical assessment of groundwater quality for drinking and irrigation purposes in western Coimbatore, South India KP Kom, B Gurugnanam, V Sunitha, YS Reddy, AK Kadam International Journal of Energy and Water Resources 6 (4), 475-494 , 2022 2022.0 Citations: 38
Geoelectrical resistivity investigation for hydrogeology conditions and groundwater potential zone mapping of Kodavanar sub-basin, southern India K Kalaivanan, B Gurugnanam, M Suresh, KP Kom, S Kumaravel Sustainable Water Resources Management 5 (3), 1281-1301 , 2019 2019.0 Citations: 24
Geospatial technology based groundwater potential zone mapping in parts of Noyyal Basin, Tamil Nadu, India KP Kom, B Gurugnanam, K Kalaivanan Intern. Int. J. Sci. Res. Sci. Technol 4 (2), 962-1254 , 2018 2018.0 Citations: 4
Nitrate contamination in groundwater of Coimbatore district (South India) and human health risk assessment KP Kom, B Gurugnanam, V Sunitha Journal Ind Geophy Union 26, 217-227 , 2022 2022.0 Citations: 3
Integration of Advanced Geospatial Technologies with Conventional Methods in Groundwater Research: A Review S Venkatramanan, K Sivakumar, K Radhakrishnan, C Thivya, P Karthick, ... Recent Advances in Water Science, 143-162 , 2026 2026.0
Groundwater Recharge Assessment with Integrated Approaches C Thivya, S Venkatramanan, K Radhakrishnan, K Sivakumar, KP Kom, ... Groundwater Depletion and Sustainability: A Methodology Utilizing Artificial … , 2026 2026.0
Geodesy and Geodynamics KP Kom, B Gurugnanam, S Bairavi 2022.0
Total Environment Research Themes KP Kom, B Gurugnanam, S Bairavi, S Chidambaram
