title: [Survey of the daily intake of nitrate and nitrite in school children by the duplicate portion method].
abstract: The daily intake of nitrate and nitrite in school children (n = 100) in Hiroshima Prefecture was estimated directly by the duplicate portion method. The daily intake of nitrate was 68.42 +/- 77.49 mg. The daily intake of nitrate/kg body weight was 2.06 +/- 2.24 mg, which is about 56% of the acceptable daily intake (ADI). The daily intake of nitrite was 0.953 +/- 0.869 mg. The daily intake of nitrite/kg body weight was 0.027 +/- 0.021 mg, which is about 45% of the ADI. The daily intake of nitrite/kg body weight was significantly different between the obese group and the non-obese group in boys (p < 0.05, Mann-Whitney U-test). The rates of children whose daily intakes of nitrate and nitrite were above the ADI were 16% and 7%, respectively.
authors.affiliation: Suzugamine Women's College: 4-6-18, Inokuchi, Nishi-ku, Hiroshima-shi, Hiroshima 733-8623, Japan.
authors.forename: Mihoko
authors.initials: M
authors.lastname: Murata
authors.forename: Noriko
authors.initials: N
authors.lastname: Kishida
authors.forename: Masataka
authors.initials: M
authors.lastname: Ishinaga
mesh_terms: D002648:Child; D005260:Female; D017022:Flow Injection Analysis; D005504:Food Analysis / Q000379:methods*; D006801:Humans; D008297:Male; D008452:Maximum Allowable Concentration; D009566:Nitrates / Q000032:analysis*; D009573:Nitrites / Q000032:analysis*; D009765:Obesity
chemical_list: D009566:Nitrates; D009573:Nitrites