Article ID Journal Published Year Pages File Type
5746619 Chemosphere 2017 8 Pages PDF
Abstract

•High F− occurrences in zeolitic-rich aquifer sediments.•Ion-exchange mechanism is the major hydrogeochemical process.•Langmuir and Temkin isotherm are the best fitted isotherm.•Women of >30 years of age have more osteoporosis.

This research work primarily deals with the geochemistry and genesis of fluoride (F−) in an alluvial aquifer with an emphasis on prevalence of dental and skeletal fluorosis among the endemic population. Hydrogeochemical outcomes reveal that chemical weathering and ion-exchange phenomena are the two dominant processes that make study area groundwater into NaHCO3 water type. Presence of intercalated zeolite rich sediments (FTotal 412-446 mg/kg) having higher ion-exchange capacity (120-125 meq/100 g) within the aquifer is the source and mobilizing factors of F− in groundwater respectively. Laboratory experiment further justifies higher desorption potential of aquifer sediments at the groundwater pH of 6.5-7.5. Health survey reveals that out of 235 studied population 60% suffer from dental fluorosis while females >30 years of age became exposed early to osteoporosis disease.

Graphical abstractDownload high-res image (214KB)Download full-size image

Related Topics
Life Sciences Environmental Science Environmental Chemistry
Authors
, , , ,