Groundwater trace element chemistry of the karstified limestone of Andhra Pradesh, India

Dar, Farooq Ahmad; Ganai, Javid A.; Ahmed, Shakeel; Satyanarayanan, M.

doi:10.1007/s12665-017-6972-3

Cited by 19 publications

(5 citation statements)

References 46 publications

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“…In the coastal areas of the Vietnamese Mekong delta, serious coliform and NH4 + contamination was observed all year round [18]. Moreover, alum and toxic metal pollution have threatened groundwater in other parts because of human impacts [18][19][20][21]. Consuming polluted groundwater has posed human health risks for local people, especially arsenic.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Groundwater Quality and Human Health Risk Assessment

Giao

Huynh

2023

Civ Eng J

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The study aimed to appraise groundwater quality in the Mekong Delta using a groundwater quality index (GWQI) and estimate human health risks associated with groundwater consumption. Groundwater samples were collected at sixty wells distributed in An Giang, Kien Giang, Hau Giang and Dong Thap provinces. Twelve water quality parameters were measured, including pH, total dissolved solids (TDS), hardness, coliform, nitrate (NO3ˉ), nitrite (NO2ˉ), ammonium (NH4+), sulfate (SO42-), iron (Fe), manganese (Mn), arsenic (As) and cadmium (Cd). The results were compared with the national regulation on groundwater quality. The findings of this study indicated that groundwater in the Mekong Delta was contaminated with microorganisms and some heavy metals (Fe, Mn, and As). This was related to anthropogenic activities, such as improperly treated domestic wastewater and agricultural and industrial wastes. Based on the results of GWQI, 30% of the total groundwater samples in the Mekong Delta were classified as very good for drinking purposes. However, over 26% of all samples were unsuitable for drinking. In terms of risk assessment, children were rather susceptible to cancer risks and adverse health effects through drinking As-contaminated groundwater than adults. The cancer risks of consuming As-contaminated groundwater for children and adults were up to 4.28×10-3that is higher than the acceptable risk. The highest aggregate hazard quotient of heavy metal-contaminated groundwater for children and adults was 9.54, which means that they could suffer adverse health effects. Groundwater is an indispensable source of freshwater in the Mekong Delta; thus, home water treatments are recommended to protect public health, and an in-depth groundwater quality and health risk assessment should be conducted. Doi: 10.28991/CEJ-2023-09-03-09 Full Text: PDF

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Section: Introductionmentioning

confidence: 99%

Characterization of Groundwater Quality and Human Health Risk Assessment

Giao

Huynh

2023

Civ Eng J

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“…A study carried out in Brazil showed that urbanization has a vital role on the quality of groundwater in an environmentally sensitive karstic watershed [23]. In the Kurnool District of Andhra Pradesh, India, the anthropogenic impact on karst water increases the concentration of trace metals [24]. Chemical degradation of karst aquifer in Yucatan peninsula of Mexico has decreased the availability of water for drinking and irrigation [25].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Karst Groundwater Quality and Hydrogeochemical Characteristics of a Prominent Dolomite Aquifer in Guizhou, China

Wang

Torres

Paudel

et al. 2020

Water

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Karst groundwater is one of the primary water resources in most provinces of Southwestern China where karst topography is strongly featured. In Guizhou Province, a prominent geologic sedimentary formation is the dolomite stratum which exists as the restricted platform facies and potentially provides a large reservoir for drinking water. A proper understanding and evaluation of its hydrogeochemical characteristics and water quality is the key to ensuring the drinking water safety. In the present study, groundwater samples were collected from 25 locations of the dolomite aquifer across Guizhou to determine their major chemical compounds, including the cations (K+, Na+, Ca2+, Mg2+) and the anions (HCO3−, F−, Cl−, NO3−, SO42−), as well as the pH, total hardness, and total dissolved solids. HCO3− and Ca2+ were found to be the dominant anion and cation, respectively, which is characteristic of typical karst groundwater and supports the overall observation of a slightly weak acid to weak alkaline environment in the studied groundwater, as the pH measurements ranged from 6.80 to 8.37. Fuzzy comprehensive evaluation method is used to evaluate the groundwater quality based on typical drinking water safety standard. The results show that the groundwater in most of the studied aquifers is of reasonably good quality. However, in some aquifers, concentrations of NO3− and/or SO42− were found to be excessively high. Overall, the studied dolomite aquifer in its natural environment as investigated in the present study can be considered as a potential geological stratum for water resources exploitation in Guizhou.

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“…The need to understand the sources and distribution of trace elements cannot be overemphasized as this aids the sustainable and effective management of groundwater resources (Barzega et al 2018). (Frengstad et al (2000) and Dar et al (2017) listed a number of natural and anthropogenic sources of trace elements in groundwater. They include urbanization, land-use changes, mining, and local industries sewage sludge to soils greywater irrigation, salt water intrusion and groundwater host lithology.…”

Section: Introductionmentioning

confidence: 99%

Spatial Distribution and Health Implications of Trace Elements in the Groundwater of Ado-Ekiti, Southwestern Nigeria

Ayodele

Daramola

Oyedele

2022

Preprint

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The spatial variations, potential origin and associated health risks of some trace elements in groundwater of Ado-Ekiti southwestern Nigeria were evaluated. Sixty groundwater samples were evaluated for the concentration of some selected trace elements which includes Mn, Fe, Pb, Zn, Cu and Cr. The results were presented as spatial distribution maps with respect to the world health organization and the Nigerian standards for drinking water. The result showed that the mean concentrations of some of the trace elements exceeded the threshold values stipulated by the world health organization and the Nigerian standard for drinking water in several sampling locations. However, all of the sampled wells recorded Pb concentration below both standards. The weathering of underlying bedrocks are key sources to some of the trace elements in the groundwater of the study area. A health risk assessment was undertaken using hazard quotient (HQ) and hazard index (HI). The HI values imply that the risk of contamination through oral ingestion pathway is from low through medium to high levels for both adults and children as the trace elements show mean HI values more than unity. The health risk assessment also indicates that the children are more susceptible to the non-carcinogenic risks than adults in the study area. Hence, some urgent proactive steps should be taken to avert the consequences of this health risk.

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Groundwater trace element chemistry of the karstified limestone of Andhra Pradesh, India

Cited by 19 publications

References 46 publications

Characterization of Groundwater Quality and Human Health Risk Assessment

Characterization of Groundwater Quality and Human Health Risk Assessment

Assessing the Karst Groundwater Quality and Hydrogeochemical Characteristics of a Prominent Dolomite Aquifer in Guizhou, China

Spatial Distribution and Health Implications of Trace Elements in the Groundwater of Ado-Ekiti, Southwestern Nigeria

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