Abstract
The fluoride ion concentration in water samples, salt and pan soil present in the salt pans of Veppalodai, Thoothukudi District were evaluated. The variation of fluoride ion concentration in the samples were supported by electrical conductance studies. The samples were drawn in the summer season for eight days during May 2011. The fluoride content was determined using a standard procedure. The concentration of fluoride ranged between 1.0 ppm and 1.7 ppm was well within the permissible limits. The concentration of fluoride ion increased in the saline water till the start of crystallization and subsequently decreased with an increase in salt formation. During the crystallization process considerable amount of fluoride got settled into the pan soil. The electrical conductivity measurement during this investigation supported the fluoride level in the brine solution.
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