title: [The evaluation of nitrate and nitrite contents in diets of preschool children].
abstract: The contents of nitrites and nitrates in whole day's food of children at preschool age have been examined. Meals consisted of three dishes were taken from one of the day nurseries in Lódź in January 1996. In the evaluation of the degree of exposure the highest permissible daily intake was considered of nitrites (0.2 mg NaNO2) and nitrates (5 mg KNO3) for kg of body weight and assumed average body weight was 20 kg for children. The contents of nitrites and nitrates were determined spectrophotometrically on the basis of Griess reaction. Nitrates were reduced to nitrites passing anaquelos extract of the studied sample through a column filled with cadium dust. The range of quality of collected nitrates in meals in wide and the quantity oscillate between 8.9 and 127, mg KNO3, the average quantity is 55.01 mg KNO3. The quantity of collected nitrites is between 0.5 and 3.8 mg NaNO2 and the average quantity is 1.58 mg NaNO2.
authors.affiliation: Centralny Ośrodek Badawczo-Rozwojowy Przemysłu Gastronomicznego i Artykułów Spozywczych.
authors.forename: A
authors.initials: A
authors.lastname: Markowska
authors.forename: W
authors.initials: W
authors.lastname: Furmanek
authors.forename: L
authors.initials: L
authors.lastname: Gackowska
authors.forename: B
authors.initials: B
authors.lastname: Siwek
mesh_terms: D002648:Child; D002669:Child Welfare; D002675:Child, Preschool; D004032:Diet; D002149:Energy Intake; D006801:Humans; D009566:Nitrates / Q000032:analysis*; D009573:Nitrites / Q000032:analysis*; D011044:Poland; D012189:Retrospective Studies; D013054:Spectrophotometry, Atomic / Q000379:methods
chemical_list: D009566:Nitrates; D009573:Nitrites