Quantitative Determination of Lead and Uranium from Geological Samples

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A separation scheme for lead and uranium is described. Before the separation of lead, uranium was collected using columns with a conventional method, namely, the separation and collection of uranium were conducted using 6 M and 0.5 M hydrochloric acid, respectively. This process separated lead from iron, thallium, and probably bismuth, which would suppress lead ionization in a thermal ionization mass spectrometer (TIMS). For lead separation, columns with a low ratio of height over inner diameter (H 10 mm, i.d. 4 mm) were employed to strip lead quickly from the resin (AG1-X2 and AG1-X8). Furthermore, 7 M nitric acid was adopted as the eluent instead of the commonly used 6 M hydrochloric acid to achieve a quantitative recovery of lead. These improvements enable us to collect lead with only 0.35 mL of 7 M nitric acid for both types of resin. Recoveries using this method obtained by the measurement of GSJ standard rock samples JA-2 and JA-3 were 96.4% and 99.7%, respectively. Total procedure blanks in two separate runs were 13 pg and 15 pg, respectively. It is therefore suggested that this method is suitable for separation and purification of lead for quantitative and isotopic analyses of geological materials.

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  • 質量分析 = Mass spectroscopy

    質量分析 = Mass spectroscopy 52(4), 213-218, 2004-08-01

    一般社団法人 日本質量分析学会

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各種コード

  • NII論文ID(NAID)
    10013522668
  • NII書誌ID(NCID)
    AN0010555X
  • 本文言語コード
    ENG
  • 資料種別
    NOT
  • ISSN
    13408097
  • NDL 記事登録ID
    7085819
  • NDL 雑誌分類
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL 請求記号
    Z17-213
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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