Trace element concentrations in the groundwater of the Tamiraparani river basin, South India: Insights from human health risk and multivariate statistical techniques

This study investigates the concentration of trace elements in the groundwater of Tamiraparani river basin, South India. 124 groundwater samples were collected representing diverse landuse condition over the study area. The results reveal that the mean concentrations of Fe, Mn, Cu, Cr, Pb, Zn and Ni...

Full description

Saved in:
Bibliographic Details
Published in:Chemosphere (Oxford) 2017-10, Vol.185, p.468-479
Main Authors: Magesh, N.S., Chandrasekar, N., Elango, L.
Format: Article
Language:English
Subjects:
Bayes Theorem
Contamination
Drinking Water
Environmental Monitoring - methods
Environmental Monitoring - standards
Groundwater
Groundwater - chemistry
Humans
India
Metals - analysis
Multivariate Analysis
Risk Assessment
Rivers
Skin Absorption
South India
Tamiraparani river basin
Trace elements
Trace Elements - analysis
Water Pollutants, Chemical - analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study investigates the concentration of trace elements in the groundwater of Tamiraparani river basin, South India. 124 groundwater samples were collected representing diverse landuse condition over the study area. The results reveal that the mean concentrations of Fe, Mn, Cu, Cr, Pb, Zn and Ni were 0.269, 0.02, 0.007, 0.007, 0.003, 0.066, and 0.004 ppm respectively. The decreasing trend of trace element content shows the following order: Fe > Zn > Mn > Cu > Cr > Ni > Pb. Significant positive correlation (p  Zn > Mn > Cu > Cr > Ni > Pb and Fe > Zn > Mn > Cr > Cu > Ni > Pb respectively. The Hazard quotients suggest that the risk of contamination through oral and dermal pathways is feeble as all the elements show values less than one. The multivariate statistical analysis reveals that the source of trace elements in the groundwater is through natural origin except copper, chromium and lead as these contaminants are derived from anthropogenic activities. •Trace elements in the groundwater of Tamiraparani river basin is modeled spatially.•Elemental concentrations were compared with WHO standards.•Emprical bayesian kriging was used and prediction errors were quantified.•Health risk assessment was done through oral and dermal pathways.•Multivariate statistical analysis were used to infer the source.
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2017.07.044