Fluoride geochemistry of groundwater in parts of Brahmaputra flood plain in Kamrup district, Assam, India

摘要

Groundwater contamination by fluoride (F) can result from the natural dissolution of minerals from subterranean strata. These inorganic contaminant in drinking water is known to cause serious health problems when the maximum contaminant levels (MCL) exceed 1.5 mg/L. The aim of this study was to correlate the high fluoride content in the groundwater of the region to the geochemistry of the water. Ground water samples were collected from tube wells, deep tube wells and ring wells covering all the major hydro geological environs in pre- and post-monsoon seasons. F concentrations ranged from 0.00 to 10.71 mg/L. Geological formations of this zone consist of F-containing minerals, which could be a major source of F in these groundwater sources.