Determination of 9Be in geological standard samples, JA-2 and JB-2, and of 9Be and 10Be in a basaltic rock sample for evaluation of uncertainty involved in 10Be/9Be ratio measurements

• GOTAN KATSUNORI

  Earthquake Research Institute, The University of Tokyo

• NAKAI SHUN'ICHI

  Earthquake Research Institute, The University of Tokyo

• MATSUZAKI HIROYUKI

  Department of Nuclear Engineering and Management, Graduate School of Engineering, The University of Tokyo

Abstract

We determined the concentrations of ⁹Be in JB-2 and JA-2 geological standard samples using an inductively coupled plasma mass spectrometer (ICP-MS). We determined ⁹Be abundance in standard samples of JA-2 and JB-2 as 2.26 ± 0.10 and 0.241 ± 0.010 ppm, respectively, after comparing and selecting ⁹Be concentration data obtained by the internal standard method, the standard addition method and the column separation method. In the course of comparison, we identified a problem in the internal standard method, which is usually used for abundance analyses using an ICP-MS. Repeated analyses of a basalt lava gave a standard deviation of ¹⁰Be abundance of 9% (1σ, n = 5). From the results, we estimated the uncertainty of ¹⁰Be/⁹Be ratio as 10% (1σ), considering a law of propagation of errors.

Journal

• GEOCHEMICAL JOURNAL

  GEOCHEMICAL JOURNAL 42 (3), 305-308, 2008

  GEOCHEMICAL SOCIETY OF JAPAN

Keywords

• ¹⁰Be
• ⁹Be
• ICP-MS
• AMS
• uncertainty

Details

• CRID: 1390001204550794112
• NII Article ID: 130004469226
• NII Article ID: 10021093726
• NII Book ID: AA00654975
• DOI: 10.2343/geochemj.42.305
• COI: 1:CAS:528:DC%2BD1MXis1Ghsg%3D%3D
• ISSN: 18805973
• ISSN: 00167002
• NDL BIB ID: 9556385
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9556385
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed