Double Correction Technique for Characterising Groundwater Quality Zones: A Case Study from Granitic Setting, India

作者：Atal Surendra^*; Negrel Philippe; Pauwels Helene; Mascre Cedric; Ahmed Shakeel

来源：Water Quality, Exposure and Health, 2011, 2(3-4): 133-146.

DOI：10.1007/s12403-010-0031-6

• Groundwater pollution
• Dual contamination
• Correction factor
• Rainwater chemistry

Today's dual contamination (water-rock interaction and anthropogenic impact) in groundwater system is a common problem worldwide. Abundant amount of work has been carried out to assess groundwater quality; however, a very limited work is released towards delineation of fluoride zones by water-rock interaction (WRI) and anthropogenic causes.
For this reason, groundwater contamination problem has been taken up in a rural granitic hydrogeological setting of Andhra Pradesh, India. Agricultural activity, brick kiln factory and chicken farms are common anthropogenic sources available in the study area. A total of 53 groundwater and rainwater samples for monsoon months of the year 2006 have been collected and analysed. At various stages, corrections have been applied using chloride concentration limit (CCL) of 20 mg/l and fluoride concentration limit (FCL) of 1.88 mg/l. The results have proved that the dominant fluoride released by WRI action and anthropogenic action cover 15.1 and 21.7% area of the watershed, respectively. Also, present mixed state (WRI and anthropogenic causes) of groundwater quality covers the major portion of the watershed.
The results of these corrections have successfully discriminated groundwater samples based on present chemical constituents. Such studies are useful for creating awareness and planning remedial measures in contaminant watershed.

• 出版日期2011-2