書誌事項
- タイトル別名
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- Determination of Inorganic Arsenic in a Certified Reference Material of Total Diet Matrix
- トータルダイエット ニンショウ ヒョウジュン ブッシツ チュウ ムキ ヒソ ノ テイリョウ
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抄録
Inorganic arsenic [iAs : As(III) and As(V)] concentrations in a certified reference material of total diet matrix (NIES CRM No.27 Typical Japanese Diet, TJD) were determinate by liquid chromatography-ICP mass spectrometry (LC-ICP-MS) with three different LC conditions and with or without a hydride generation system. The iAs were extracted from TJD by a method given in the literature (0.07 mol L−1 HCl + pepsin, 37°C for 2hr). The detection limits for the iAs were better than 6.1 ng As g−1 in TJD (corresponds to 0.92 ng As g−1 on a wet diet sample), indicating sufficient sensitivity for iAs in total diet samples. The reproducibility was 1.8-12.1% and the linearity of the calibration lines was satisfactory. The recovery of added iAs was 101-106%. When the extraction was repeated 3 times, the sum of the concentrations of arsenic species detected by the LC-1 agreed with the certified values for total arsenic in TJD. The total content of As(V) and As(III) was estimated to be 65 ± 2 and 18 ± 2 ng As g−1, respectively, by LC-1 condition. The analytical results of iAs in TJD based on the three LC-ICP-MS conditions by this particular extraction method were consistent with each other and the reference value was estimated to be 43 and 17 ng As g−1 for As(V) and As(III), respectively. The present results will be valuable in the quality control of iAs analysis of total diet samples for iAs risk assessment in Japan.
収録刊行物
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- 分析化学
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分析化学 60 (8), 653-658, 2011
公益社団法人 日本分析化学会
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詳細情報 詳細情報について
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- CRID
- 1390001204661102336
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- NII論文ID
- 10029341037
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- NII書誌ID
- AN00222633
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- COI
- 1:CAS:528:DC%2BC3MXhtFersbbJ
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- NDL書誌ID
- 11214912
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- ISSN
- 05251931
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可