title: Evaluation of health hazards in children from regions with nitrate pollution.
abstract: Nitrate pollution of drinking water can be potentially hazardous with health risks for considerable groups of people. Methemoglobin in blood and concentration of nitrates and nitrites in morning saliva, urine, and plasma as sensitive indicators of nitrate accumulation in the body were analysed in 12-14-year-old children living in villages with nitrate pollution of the drinking water. The children were distributed in two experimental groups of 18-21 children each. Nitrates and nitrites were analysed in biological fluids by a modified cadmium-reduction method. Nitrate accumulation in the body was significantly higher in the nitrate pollution exposed children than in the unexposed children which correlated with greater health hazards.
authors.affiliation: Department of Hygiene and Ecology, Higher Medical Institute, Plovdiv, Bulgaria.
authors.forename: P D
authors.initials: PD
authors.lastname: Gatseva
authors.forename: Z H
authors.initials: ZH
authors.lastname: Mardirosian
authors.forename: E J
authors.initials: EJ
authors.lastname: Popova
authors.forename: E S
authors.initials: ES
authors.lastname: Iskrenova
authors.forename: S V
authors.initials: SV
authors.lastname: Vladeva
authors.forename: K I
authors.initials: KI
authors.lastname: Pavlova
mesh_terms: D000293:Adolescent; D002031:Bulgaria; D002648:Child; D002669:Child Welfare; D015386:Hazardous Substances; D006801:Humans; D008706:Methemoglobin / Q000032:analysis; D009566:Nitrates / Q000009:adverse effects* / Q000032:analysis / Q000652:urine; D009573:Nitrites / Q000032:analysis / Q000652:urine; D012307:Risk Factors; D012463:Saliva / Q000737:chemistry; D014877:Water Pollution, Chemical
chemical_list: D015386:Hazardous Substances; D009566:Nitrates; D009573:Nitrites; D008706:Methemoglobin