title: [Studies on the rare earth content in food and its daily intake in man].
abstract: The rare earth content of major food in China, they are distributed over 17 provinces and cities were examined by three-wavelength spectrophotometry. The rare earth contents were as follows: 0.41 +/- 0.35 mg/kg in grain, 0.23 +/- 0.18 mg/kg in vegetables, 0.19 +/- 0.11 mg/kg in fruits, 0.83 +/- 0.73 mg/kg in beans, 0.66 +/- 0.50 mg/kg in potato, 1.76 +/- 0.23 mg/kg in tea, 0.07 +/- 0.05 mg/kg in meat, birds, domestic fowls and eggs, 0.52 +/- 0.12 mg/kg in aquatic animals, 5.11 +/- 8.68 micrograms/L in drinking water. The possible daily intake of rare earth for a person from common foodstuffs was about 2.10-2. 50 mg/person.day, which was about one tenth to one sixth of ADI allowable daily intake of rare earths for a person.
authors.affiliation: Institute of Food Safety Control and Inspection, Ministry of Public Health, Beijing.
authors.forename: D Z
authors.initials: DZ
authors.lastname: Su
authors.forename: L D
authors.initials: LD
authors.lastname: Xiang
authors.forename: Y X
authors.initials: YX
authors.lastname: Zhai
mesh_terms: D002523:Edible Grain / Q000737:chemistry*; D005504:Food Analysis; D005638:Fruit / Q000737:chemistry; D006801:Humans; D008452:Maximum Allowable Concentration; D008674:Metals, Rare Earth / Q000032:analysis*; D013025:Glycine max / Q000737:chemistry; D013053:Spectrophotometry / Q000379:methods; D014675:Vegetables / Q000737:chemistry*
chemical_list: D008674:Metals, Rare Earth