Hydrogeochemical and multivariate statistical appraisal of pollution sources in the groundwater of the lower Bhavani River basin in Tamil Nadu

Kumar, P. J. Sajil

doi:10.1080/24749508.2019.1574156

Cited by 30 publications

(8 citation statements)

References 34 publications

(26 reference statements)

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“…To determine the equilibrium between the soil solution and the main minerals that may form in Chott El Beida, we calculated the saturation indices for each mineral (Sajil Kumar, 2020). This index allows the identification of the reaction mode of dissolution or mineral precipitation.…”

Section: Methodsmentioning

confidence: 99%

Salinisation of soils in semi‐arid endorheic zone: Case of Chott El Beida (Algeria)

Laoufi,

Ait Mechedal,

Daoud

2023

Land Degrad Dev

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Chott El Beida, North of Algeria (Setif, 585 km2), is an endorheic zone located in a semi‐arid climate. It is among the first chotts listed under the Ramsar Convention on the Wetlands of International Importance. Numerous studies on wetlands in the Setif region have focused on hydrogeology, avifauna, and vegetation. However, only one study has been devoted to soil studies. This study focused on the pedological and geochemical aspects of salinity in this area. This study was conducted on a toposequence of 200 m comprising eight soil profiles. A set of 24 samples were collected from the top to a depth (0–200 cm) and were subjected to a series of physical and chemical analyses. The concentrations of the major elements were used to determine the chemical facies and calculate the saturation indices for each mineral and residual alkalinity using geochemical modelling with PHREEQC. This study shows that the salinity in Chott El Beida is very variable, varying from less saline to extremely saline, moving from the outside to the centre of the chott, with two types of saline profiles: the descending type towards the outside of the chott and the ascending type in the highly saline depression. Geochemical investigations demonstrated that the dominant facies is (Na‐Cl) which is in accordance with the neutral saline pathway. The phenomenon of salinisation in Chott El Beida is controlled mainly by the precipitation of minerals, namely, calcite, aragonite, dolomite, gypsum, and anhydrite, and the dissolution of evaporite minerals. The study of calcite residual alkalinity and generalised residual alkalinity showed that salinisation evolves in the neutral saline path without the risk of alkalinization.

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Section: Methodsmentioning

confidence: 99%

Salinisation of soils in semi‐arid endorheic zone: Case of Chott El Beida (Algeria)

Laoufi,

Ait Mechedal,

Daoud

2023

Land Degrad Dev

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“…In many works such as Kumar et al (2018), Kumar (2019), Elumalai et al (2020) and Ewaid et al (2021) neglect the process of evaluating the best clustering method, directly applying Ward's method. However, this procedure may not be the most suitable for defining the composition of the dataset grouping structure (Pandove et al, 2019).…”

Section: Methodsmentioning

confidence: 99%

Sustainability assessment in cities in the eastern amazon

Lima,

Progênio,

Costa

et al. 2023

Sustainable Development

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Indicators are important tools that help monitor and assess sustainability, providing crucial information for public management. This study aimed to analyze the behavior of municipalities in eastern amazon (State of Pará), through sustainability indicators that cover social, economic, environmental and basic sanitation dimensions, applying the statistical method of multivariate analysis. For the selection of indicators, a checklist of academic papers on sustainability was carried out. For the composition of the clusters, the Ward method was applied. To validate the number of groups, the Pakhira‐Bandyopadhyay‐Maulik (PBM) index was used, obtaining 2 groups for the sanitation and general dimensions, 3 for environmental and social and 7 groups for economic. In this study, it was possible to demonstrate that several municipalities have deficiencies related to access to water supply and mainly sewage collection and treatment, causing various consequences for the population, as they do not comply with the commitments of the Sustainable Development Goals.

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“…− -N also suggests the influence of fertilizer and pesticides used in the cultivated land of river peripheral areas[54][55][56].Correlations of chemical parameters of groundwater are similar to those of river water. + -N, Ca 2+ , Mg 2+ , Cl − , and PO 4 − -P.Strong positive correlation between Na + , Mg 2+ and Cl − (0.94) in groundwater indicates the influence of anthropogenic activities[57] because there was no evidence of halite deposits in the study area[58].…”

mentioning

confidence: 87%

Identifying Groundwater and River Water Interconnections Using Hydrochemistry, Stable Isotopes, and Statistical Methods in Hanumante River, Kathmandu Valley, Central Nepal

Bajracharya

Nakamura

Ghimire

et al. 2020

Water

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Interconnection between river water and groundwater plays an important role in maintaining water quantity and quality in hydrological systems. Furthermore, the exact interconnection is often difficult to observe and measure. This study attempts to explain river and shallow groundwater interconnection in urbanized areas of the Kathmandu Valley, Nepal. Isotopic (δD and δ18O) and chemical analyses were performed on river and groundwater samples, and the results were analyzed using statistical methods to identify areas of interconnection between river water and groundwater. Higher concentrations and positive strong correlations of Na+ with K+, NH4+-N, Cl−, HCO3−, and PO4−-P, and a change of water type from Ca-HCO3 during the wet season to Na-K-HCO3 during the dry season indicate higher contamination in river water during the dry season. Hierarchical cluster analysis was used in grouping water samples into clusters on the basis of isotopic and chemical (Na+ and Cl−) composition. Grouping of river and groundwater samples in one–one clusters from wet and dry seasons shows the presence of interconnection, indicating the contribution of river water in recharging shallow groundwater. These results imply that shallow groundwater found near rivers is chemically contaminated by polluted river water through bank infiltration, in both wet and dry seasons.

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Hydrogeochemical and multivariate statistical appraisal of pollution sources in the groundwater of the lower Bhavani River basin in Tamil Nadu

Cited by 30 publications

References 34 publications

Salinisation of soils in semi‐arid endorheic zone: Case of Chott El Beida (Algeria)

Salinisation of soils in semi‐arid endorheic zone: Case of Chott El Beida (Algeria)

Sustainability assessment in cities in the eastern amazon

Identifying Groundwater and River Water Interconnections Using Hydrochemistry, Stable Isotopes, and Statistical Methods in Hanumante River, Kathmandu Valley, Central Nepal

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