Development of a Method for Analysis of Radionuclides in Biological Samples Using ICP Mass Spectrometer

• Homma Akari

  Department of Radiology, Steel Memorial Muroran Hospital, 1-45 Chiribetsu-cho, Muroran, Hokkaido, Japan

• Tazoe Hirofumi

  Department of Radiation Chemistry, Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori, Japan

• Yamada Masatoshi

  Department of Radiation Chemistry, Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki, Aomori, Japan

• Terashima Shingo

  Department of Radiation Science, Hirosaki University School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori, Japan

• Hosokawa Yoichiro

  Department of Radiation Science, Hirosaki University School of Health Sciences, 66-1 Hon-cho, Hirosaki, Aomori, Japan

抄録

Internal ionizing radiation exposure dose is estimated indirectly by bioassay of biological samples such as feces and urine. In order to establish a method for internal exposure dose estimation for urine samples, we evaluated sample pretreatment by wet digestion prior to radionuclide measurement by inductively coupled plasma mass spectrometry. Wet digestion method was selected so that not only thorium and uranium but also ⁹⁰Sr and ⁹⁹Tc in urine samples could be determined. Analysis of thorium and uranium in tap water of Hirosaki city, and of mineral water and urine samples provided by the residents of Fukushima prefecture were performed using the resulting bioassay protocol. The concentrations of ²³²Th in urine samples were 4.8 to 43.1 ppt and ²³⁸U concentrations were 25.8 to 133.2 ppt, which were higher than those in the corresponding water and mineral water samples. These values are thought to be affected by the thorium and uranium content of both food and drinking water. Pretreatment of urine samples for thorium and uranium for inductively coupled plasma mass spectrometry was established as a bioassay for internal exposure dose estimation.

収録刊行物

• Radiation Environment and Medicine

  Radiation Environment and Medicine 7 (2), 102-109, 2018-08-30

  国立大学法人 弘前大学出版会

キーワード

• ICP-MS
• Wet digestion system
• Uranium
• Urine sample

詳細情報

• CRID: 1390856837722473344
• NII論文ID: 40021646769
• NII書誌ID: AA12760776
• DOI: 10.51083/radiatenvironmed.7.2_102
• ISSN: 2432163X
• ISSN: 24239097
• NDL書誌ID: 029184900
• Web Site: http://id.ndl.go.jp/bib/029184900
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029184900
• Web Site: https://search.jamas.or.jp/link/ui/2020122034
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用可