Hydrochemical and statistical techniques to decode groundwater geochemical interactions and saline water intrusion along the coastal regions of Tamil Nadu and Puducherry, India

Khan, A. Faizal; Srinivasamoorthy, K.; Prakash, R.; Rabina, C.

doi:10.1007/s10653-020-00713-0

Cited by 24 publications

(9 citation statements)

References 44 publications

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“…The hydrochemical type of seawater is Na-Cl type. As the content of Na + and Cl − in seawater is much higher than that of other ions in fresh groundwater, with the increase of seawater proportion, the hydrochemical type of groundwater gradually draws closer to Na-Cl, which also exists in studies in other parts of the world [35,36]. As the triangular chart at the bottom left of the Piper diagram revealed, the proportion of Ca 2+ in the cations of freshwater ranges from 80% to 60%, that in slightly saline water ranges from 60% to 20%, and that in highly saline water ranges from 30% to 20%, with the intensification of seawater intrusion, the proportion of Ca 2+ in the groundwater presents a significant decrease trend.…”

Section: Hydrochemical Type Changes With the Deepening Of Seawater Inmentioning

confidence: 85%

Section: Hydrochemical Type Changes With the Deepening Of Seawater Inmentioning

confidence: 87%

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Hydrochemical Characteristics and Irrigation Suitability Evaluation of Groundwater with Different Degrees of Seawater Intrusion

Wang

Liu

et al. 2020

Water

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Groundwater in coastal aquifers is often affected by seawater intrusion, resulting in water quality deterioration. Using groundwater influenced by seawater intrusion for irrigation can lead to crop failure, erosion of machinery and pipes, and adverse effects on farming. In this study, the results of water testing, methods of statistical analysis, ion ratios, a Piper diagram, and a variety of groundwater irrigation suitability models were used to analyze the chemical composition of groundwater and the influence of seawater intrusion. The result shows that the content of Na+, K+, Ca2+, Mg2+, Cl−, and SO42− in groundwater would increase due to seawater intrusion, and the increasing trend was consistent with the freshwater–seawater mixing line. With the deepening of seawater intrusion, the hydrochemical type gradually changes from Ca-HCO3·Cl to Na·Mg-Cl·SO4 and then to Na-Cl type, and the source of hydrochemical composition changes from “Rock Weathering Dominance” to “Evaporation Dominance”. When the Cl− concentration is greater than 7.1 meq/L, groundwater will corrode pipelines and instruments; when greater than 28.2 meq/L, excessively high salinity of groundwater will have adverse effects on planting; and when greater than 14.1 meq/L, the groundwater hardness is too high, which may make the groundwater unsuitable for cultivation.

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Section: Hydrochemical Type Changes With the Deepening Of Seawater Inmentioning

confidence: 85%

Section: Hydrochemical Type Changes With the Deepening Of Seawater Inmentioning

confidence: 87%

Hydrochemical Characteristics and Irrigation Suitability Evaluation of Groundwater with Different Degrees of Seawater Intrusion

Wang

Liu

et al. 2020

Water

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“…Furthermore, the dominance of Ca + Mg over HCO 3 + SO 4 indicates the presence of reverse ion exchange. Furthermore, high concentrations of Na as compared to Ca and Mg in some locations can result from saline water intrusion [ 56 ]. Based on previous studies taking place in the Sfax coastal shallow aquifer, the extent and the weight of seawater intrusion risk are parameters that need to be determined.…”

Section: Resultsmentioning

confidence: 99%

Assessment of Seawater Intrusion in Coastal Aquifers Using Multivariate Statistical Analyses and Hydrochemical Facies Evolution-Based Model

Hajji

Allouche

Bouri

et al. 2021

IJERPH

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Groundwater (GW) studies have been conducted worldwide with regard to several pressures, including climate change, seawater intrusion, and water overexploitation. GW quality is a very important sector for several countries in the world, in particular for Tunisia. The shallow coastal aquifer of Sfax (located in Tunisia) was found to be under the combined conditions of continuous drop in GW and further deterioration of the groundwater quality (GWQ). This study was conducted to identify the processes that control GWQ mainly in relation to mineralization sources in the shallow Sfax coastal aquifer. To perform this task, 37 wells are considered. Data include 10 physico-chemical properties of groundwater analyzed in water samples: pH, EC, calcium (Ca), sodium (Na), magnesium (Mg), potassium (K), chloride (Cl), sulfate (SO4), bicarbonate (HCO3), and nitrate (NO3), i.e., investigation was based on a database of 370 observations. Principal component analysis (PCA) and hydrochemical facies evolution (HFE) were conducted to extract the main factors affecting GW chemistry. The results obtained using the PCA model show that GWQ is mainly controlled by either natural factors (rock–water interactions) or anthropogenic ones (agricultural and domestic activities). Indeed, the GW overexploitation generated not only the GWQ degradation but also the SWI. The inverse distance weighted (IDW) method, integrated in a geographic information system (GIS), is employed to achieve spatial mapping of seawater intrusion locations. Hydrochemical facies evolution (HFE) results corroborate the seawater intrusion and its spatial distribution. Furthermore, the mixing ratio showed that Jebeniana and Chaffar–Mahares localities are characterized by high SWI hazard. This research should be done to better manage GW resources and help to develop a suitable plan for the exploitation and protection of water resources.

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“…Six papers of this topic represent case studies of saline water intrusion along the coastal Tamil Nadu and Puducherry states of south India using hydro-chemical and statistical techniques. Faizal Khan et al (2020) reported about the mixing of seawater and…”

Section: Hydrogeochemistrymentioning

confidence: 99%

Impact of groundwater contamination on human health

Karunanidhi¹,

Subramani

Roy

et al. 2021

Environ Geochem Health

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BackgroundGroundwater pollution is a worldwide problem with significant effects on human health and environmental security. It requires an in-depth understanding as the access to safe drinking water is a fundamental human right. The inferior quality of potable water has been deteriorating the human health and affecting the sustainable development of society. Increased urbanization and population growth in many parts of the world have exacerbated contamination of groundwater, mainly through the misuse of groundwater assets and the discharge of domestic and industrial sewage into the groundwater system. Human health is susceptible to the exposure of metal/metalloid, even at trace level, because of its persistence in the environmental media and acute toxicity.This special issue ''Impact of Groundwater Contamination on Human Health'' is a compilation of new case studies about recent advances in ground-breaking research about groundwater characteristics and groundwater modelling in different parts of the world using multidisciplinary tools to evaluate the risk on human health as well as on agricultural activities from chemical compositions and radioactivity along with other cutting edge topics like waste water management as well as microbial and heavy metal contaminations. It contains 23 different research papers from five countries (China, India, Kazakhstan, Kuwait, and Malaysia) focussing on seven different topics: (1) Hydrogeochemistry, (2) Groundwater modelling, (3) Risk assessment, (4) Radioactivity, (5) Wastewater treatment, (6) Heavy metals contamination, and (7) Microbial contamination. This editorial briefly reviewed the papers that focussed on different topics of groundwater evaluation and characterization. HydrogeochemistrySix papers of this topic represent case studies of saline water intrusion along the coastal Tamil Nadu and Puducherry states of south India using hydro-chemical and statistical techniques. Faizal Khan et al. (2020) reported about the mixing of seawater and

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Hydrochemical and statistical techniques to decode groundwater geochemical interactions and saline water intrusion along the coastal regions of Tamil Nadu and Puducherry, India

Cited by 24 publications

References 44 publications

Hydrochemical Characteristics and Irrigation Suitability Evaluation of Groundwater with Different Degrees of Seawater Intrusion

Hydrochemical Characteristics and Irrigation Suitability Evaluation of Groundwater with Different Degrees of Seawater Intrusion

Assessment of Seawater Intrusion in Coastal Aquifers Using Multivariate Statistical Analyses and Hydrochemical Facies Evolution-Based Model

Impact of groundwater contamination on human health

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