Volume No. 1 Issue No.: 4 Page No.: 383-391 April-June 2007

 

GROUNDWATER QUALITY IN SOME VILLAGES OF RAJASTHAN (INDIA) : FOCUSED ON FLUORIDE

 

Prerna Sharma

Department of Civil Engineering., IIT Delhi (India)

 

Received on : February 20, 2007

 

ABSTRACT

 

The object of this study was to determine the fluoride concentration in groundwater of four blocks in Ajmer district of Rajasthan state (India). The relation between various other water quality parameters such as electrical conductivity, pH, total dissolved salts, chloride, fluoride nitrate, carbonate, bicarbonate, sulfate, magnesium, calcium, potassium, and sodium were also studied. A systematic calculation of correlation coefficients among different physico-chemical parameters was also performed. The analytical results indicated considerable variations among the analyzed samples with respect to their chemical composition. The majority of the samples do not comply with Indian as well as WHO standards for most of the water quality parameters studied. The fluoride concentration in the groundwater of these blocks varied from 0.24 to 17.60 mg/L, causing dental fluorosis and skeletal fluorosis among the people of these blocks. The overall water quality was found unsatisfactory for drinking purposes without any prior treatment.

 

Keywords : Fluoride; Dental and Skeletal Fluorosis; Groundwater; Defluoridation; Flocculation; Adsorption

 

 

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