TITLE:
Hydrogeochemistry and Groundwater Quality Assessment of Rapur Area, Andhra Pradesh, South India
AUTHORS:
Arveti Nagaraju, P. Muralidhar, Y. Sreedhar
KEYWORDS:
Groundwater Hydrochemistry, Quality Assessment, Rapur, South India
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.4 No.4,
April
27,
2016
ABSTRACT: The
assessment of the quality of groundwater in Rapur area of Nellore District has
been carried out with an objective to determine the hydrogeochemical validity.
A total of 30 samples of groundwater were collected from wells occurring in the
study area. The analyzed physicochemical parameters such as pH, electrical
conductivity, total dissolved solids, silica, calcium, magnesium, sodium,
potassium, bicarbonate, carbonate, sulfate, and chloride are used to
characterize the ground-water quality and its suitability for drinking and
irrigational uses. Based on the analytical results, chemical indices like
sodium absorption ratio (SAR), adjusted SAR, percent sodium (Na %), potential
salinity, residual sodium carbonate (RSC), permeability index (PI), chloroalkaline
indices, Kelly’s ratio, magnesium ratio and Gibbs ratios have been calculated. Chadha
rectangular and diagram for geochemical classification and hydrochemical
processes of groundwater indicated that most of the waters are Na-Cl and
Ca-Mg-Cl types. The Gibb’s plot indicates that the groundwater chemistry of the
study area is mainly controlled by rock-water interaction.