Discrimination of Low-alpha 210 Lead for Electronics Material Using Isotope Ratio Measurement by ICP-QMS

• MIZUTANI Akiyo

  Graduate School of Science and Technology, Chiba University

• OGUMA Koichi

  Graduate School of Engineering, Chiba University

• FUJINAMI Masanori

  Graduate School of Engineering, Chiba University

抄録

The applicability of inductively coupled plasma quadrupole mass spectrometry (ICP-QMS) has been investigated to the discrimination of low-alpha lead raw materials for electronics material. The experimental conditions for ICP-QMS were first optimized to improve the precision of isotope ratio measurement of lead materials. The lead isotope ratios of NIST SRM981 measured by an ICP-QMS under the optimized conditions agreed with those obtained by high precision mass spectrometers, thermal ionization mass spectrometer or multiple collector inductively coupled plasma mass spectrometer within the range of statistical errors. The relationship between the isotope ratios and alpha dose rates measured for six types of lead raw materials in various quality produced by different refining methods revealed that the leads examined here were divided into four groups. The low-alpha lead raw material showed a peculiar isotope ratio and was found to be discriminable by ICP-QMS.

収録刊行物

• ＲＡＤＩＯＩＳＯＴＯＰＥＳ

  ＲＡＤＩＯＩＳＯＴＯＰＥＳ 62 (2), 73-82, 2013

  公益社団法人 日本アイソトープ協会

キーワード

• low-alpha 210 lead
• electronics material
• lead isotope ratio
• ICP-QMS
• alpha-particle emission rate

詳細情報

• CRID: 1390001204156218496
• NII論文ID: 10031155488
• NII書誌ID: AN00351589
• DOI: 10.3769/radioisotopes.62.73
• ISSN: 18844111
• ISSN: 00338303
• NDL書誌ID: 024296872
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024296872
• Web Site: https://www.jstage.jst.go.jp/article/radioisotopes/62/2/62_73/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可