Single laboratory validation of a method for the determination of molybdenum content for nutrition labeling by ICP-AES

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  • Matsumoto Teruki
    National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition
  • Ichida Naoko
    National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition
  • Takebayashi Jun
    National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition
  • Katou Michiko
    National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition
  • Ishimi Yoshiko
    National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition

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Other Title
  • ICP-AES による栄養表示のためのモリブデン定量法の単一試験室による妥当性確認
  • ICP-AES ニ ヨル エイヨウ ヒョウジ ノ タメ ノ モリブデン テイリョウホウ ノ タンイツ シケンシツ ニ ヨル ダトウセイ カクニン

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As a method for nutrition labeling, the quantitative analysis of molybdenum in food by inductively coupled plasma atomic emission spectrometry after dry ashing at 500 °C was studied and validated. Single laboratory validation has been performed to evaluate the trueness, precision, applicability, limit of detection, limit of quantification and linearity of the method, using certified reference material (NIST SRM 1849, infant/adult nutritional formula) and commercial natto (fermented soybeans). The repeatability and intermediate precision of analysis were less than 2.9 and 4.5 % relative standard deviation, respectively, with HorRatr value 0.24 or less. Recovery tests of molybdenum contents were performed for 13 food samples. Therefore, the recovery rate of molybdenum ranged from 69 to 111 % indicating the high applicability of the method.

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