title: Site specific toxicological risk from fluoride exposure through ingestion of vegetables and cereal crops in Unnao district, Uttar Pradesh, India.
abstract: A study was carried out to assess toxicological risk from the fluoride (F) exposure due to ingestion of vegetables and cereal crops such as rice and wheat grown in potentially fluoridated area (brick kiln and sodic areas), of different age groups in Unnao district, Uttar Pradesh, India. Fluoride contents in vegetables and cereal were found to be in the order brick kiln sites>sodic sites>normal sites. Among vegetables maximum F concentration was found in spinach and mint, whereas in cereal crops, wheat accumulated more F than rice. The exposure dose of F was determined using estimated daily intake (EDI) and bio-concentration factor (BCF) of F. The children of age group 3-14 years in the potentially fluoridated area were found to be at the risk of fluorosis. The mean BCF value of F was the highest in mint (36.6 mg/kg(dwt) plant/mg/kg(dwt) soil), followed by spinach (33.99 mg/kg(dwt) plant.mg/kg(dwt) soil).
authors.affiliation: Central Soil Salinity Research Institute, Regional Research Station, Jail Road, Lucknow, Uttar Pradesh, India. jhask_01@yahoo.com
authors.forename: S K
authors.initials: SK
authors.lastname: Jha
authors.forename: A K
authors.initials: AK
authors.lastname: Nayak
authors.forename: Y K
authors.initials: YK
authors.lastname: Sharma
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000538:Aluminum Silicates / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D000077215:Clay; D004032:Diet / Q000706:statistics & numerical data; D002523:Edible Grain / Q000737:chemistry*; D004781:Environmental Exposure / Q000032:analysis / Q000706:statistics & numerical data; D005457:Fluoridation; D005459:Fluorides / Q000008:administration & dosage / Q000032:analysis / Q000633:toxicity*; D009050:Fluorosis, Dental / Q000453:epidemiology; D005506:Food Contamination; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007194:India / Q000453:epidemiology; D008875:Middle Aged; D009749:Nutrition Surveys; D018570:Risk Assessment; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000008:administration & dosage / Q000032:analysis / Q000633:toxicity*; D014675:Vegetables / Q000737:chemistry*; D055815:Young Adult
chemical_list: D000538:Aluminum Silicates; D012987:Soil; D012989:Soil Pollutants; D005459:Fluorides; D000077215:Clay