NDLI: Hydrochemical characteristic of coastal aquifer from Tuticorin, Tamil Nadu, India

Content Provider	Springer Nature Link
Author	Mondal, Nepal C. Singh, Vijay P. Singh, Somvir Singh, Vijay S.
Copyright Year	2010
Abstract	This article deals with a systematic hydrochemical study carried out in coastal aquifers, Tuticorin, Tamil Nadu, to assess groundwater quality. A total of 29 groundwater samples were collected and analyzed. Results showed that total dissolved solids (TDS), sodium (Na + ), magnesium (Mg2 + ), chloride (Cl − ), and sulfate (SO $_{4}^{\,\,2-}$ ) significantly damaged groundwater systems. The degree of salinization due to seawater mixing in a well or a given area could be indicated by an increase in nearly all major cations and anions. Toxic elements (i.e., Pb and As) were higher than the maximum permissible limits of drinking water. Cross plot of HCO $_{3}^{\,\,-}$ /Cl − (molar ratios) versus TDS indicated that about 62% of the analyzed samples were saline. Factor analysis showed that groundwaters, affected by seawater intrusion/industrial activity, were separated from the clusters. An attempt was made to identify the hydrochemical processes that accompany current intrusion of seawater using ionic changes. It was estimated that the mixing rate of seawater intrusion was about 5.81% during April 2007. An index, called ‘Seawater Mixing Index’ (SMI), was also adopted and its value was SMI > 1.18 with EC > 3,000 μS/cm about 62% of the sampled waters, were saline. Further, a few trace elements (i.e., Sr, B, and Li) were used as indicators for responding to the change in fresh to saline groundwater environments in coastal aquifers.
Starting Page	531
Ending Page	550
Page Count	20
File Format	PDF
ISSN	01676369
Journal	Environmental Monitoring and Assessment
Volume Number	175
Issue Number	1-4
e-ISSN	15732959
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-06-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Groundwater Coastal aquifers Seawater intrusion Seawater mixing index Ionic change Tamil Nadu India Ecology Environmental Monitoring/Analysis Atmospheric Protection/Air Quality Control/Air Pollution Environmental Management Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Pollution Medicine Management, Monitoring, Policy and Law

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