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P. Kumaran

Bio: P. Kumaran is an academic researcher from Indira Gandhi Centre for Atomic Research. The author has contributed to research in topics: Nitrate & Water quality. The author has an hindex of 2, co-authored 2 publications receiving 39 citations.

Papers
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Journal ArticleDOI
TL;DR: A total of 228 groundwater samples were collected at a depth of 10-30 feet below ground level (bgl) during one year period from nineteen wells around Kalpakkam, Tamil Nadu, India which is known for nuclear installations as discussed by the authors.

38 citations

Journal ArticleDOI
TL;DR: The use of Cl/Br ratio and statistical correlation of hydro-chemical parameters to identify the nitrate source to the groundwater showed strong association with high Cl/ Br mass ratio, indicating mixing of sewage and septic tank effluents with groundwater as a primary source for the nitrates in the studied area.
Abstract: Source appointment for groundwater nitrate contamination is critical in prioritizing effective strategy for its mitigation Here, we assessed the use of Cl/Br ratio and statistical correlation of hydro-chemical parameters to identify the nitrate source to the groundwater A total of 228 samples from 19 domestic wells distributed throughout the study area were collected during June 2011–May 2012 and analyzed for various physicochemical parameters Study area was divided into three spatial zones based on demographic features, viz, northern, southern, and central part Nitrate concentration in 57 % of samples exceeded the prescribed safe limit for drinking stipulated by the World Health Organization (WHO) and Bureau of Indian standards (BIS) The central part of the study area showed elevated nitrate concentration ranging from below detection limit (BDL) to 2635 mg/l as NO3 − and demonstrated high attenuation within the immediate vicinity thereby restricting diffusion of the nitrate to the adjacent parts Resolution of correlation matrix as statistical indicator for nitrate contamination was poor Seventy-seven percent of samples with high nitrate concentration (>45 mg/l as NO3 −) showed strong association with high Cl/Br mass ratio (350–900), indicating mixing of sewage and septic tank effluents with groundwater as a primary source for the nitrate in the studied area Nitrate level during monsoon (BDL, 2299 mg/l as NO3 −), post-monsoon (BDL, 2635 mg/l as NO3 −), and pre-monsoon (05–2231 mg/l as NO3 −) indicated additional contribution of surface leaching to groundwater

16 citations


Cited by
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Journal ArticleDOI
TL;DR: Recent progress in the field of water remediation from the perspective of primary HMs (including divalent metals and variable-valent metals) in water pollution and the corresponding MOFs that can remove these metals from water are reviewed.

213 citations

Journal ArticleDOI
TL;DR: A groundwater geochemistry study was conducted in Agra where 28 samples were collected from shallow aquifers in May 2016 from different sites as mentioned in this paper, and the results showed that most of the samples exceeded the acceptable limit for drinking water standards.
Abstract: The quality of groundwater is very important in Agra because groundwater is the main source of water for drinking, domestic, agricultural and industrial uses. A groundwater geochemistry study was conducted in Agra where 28 samples were collected from shallow aquifers in May 2016 from different sites. The aim of this research was to assess the quality of groundwater for drinking purposes in the study area. Arc-GIS has been used to prepare geographic information system-based spatial distribution maps of different major elements. The groundwater quality was analyzed for various physico-chemical parameters, major cations and anions and some trace metals. The observed values were compared with BIS and WHO standards. Statistical parameters such as the mean, median, standard deviation, skewness and kurtosis were used to analyze the hydrogeochemical characteristics of the groundwater. Correlation coefficient analysis and principal component analysis (PCA) were performed to identify the sources of the water constituents. Our results showed that most of the samples exceeded the acceptable limit for drinking water standards. The sequence of abundance of the main cations was generally Na+ > Ca2+ > Mg2+ > K+, while the anions in order of abundance were HCO3− > Cl− > SO42− and NO3− > F−. All of the trace metals were within the permissible limit except for iron and manganese. The hazard index value of 5.7 × 10−2 indicated that there was no potential health risk in the study area. Ca2+, Mg2+, Cl− and SO42− were the dominant hydrogeochemical facies in the majority of the groundwater samples. Most of the parameters such as TDS, Cl−, HCO3−, SO42−, NO3−, Ca2+, Mg2+, Na+, K+ and TH showed strong correlations with each other, which were due to natural processes such as weathering, exchangeable ions and reduction/oxidation, as well as anthropogenic activity around the study area. The water quality index indicated that the water quality was poor at 46.43% of the sampling sites, very poor at 28.57% of the sites and unsuitable for drinking purposes at 25% of the sampling sites. Gibbs diagrams suggested rock weathering as a major driving force for controlling the groundwater chemistry in the study area, along with evaporation as a minor influence.

71 citations

Journal ArticleDOI
TL;DR: A comprehensive hydrochemical study has been carried out to evaluate the impact of anthropogenic activities like industrial effluents, open defecation and untreated sewerage disposal on groundwater and surface water in Chincholi industrial area as discussed by the authors.

63 citations

Journal ArticleDOI
TL;DR: Water Quality Index (WQI) values confirmed the prevailing 'bad' condition, detrimental for sustenance of aquatic biota, and the authors recommend adopting preventive measures for water quality improvement linked to biodiversity conservation.

56 citations