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Journal of Radioanalytical and Nuclear Chemistry

, Volume 129, Issue 2, pp 459–464 | Cite as

Determination of As, Cd, Hg, Cu and Zn in biological samples by radiochemical neutron activation analysis

  • Guisun Zhuang
  • Yinson Wang
  • Min Zhi
  • Wei Zhou
  • Jianhua Yin
  • Mingguang Tan
  • Yuandi Cheng
Article

Abstract

In this work, a simple group separation scheme based on extraction for NAA determination of trace of As, Cd, Hg, Cu and Zn in biological materials is described. For this purpose, zinc-diethyldithiocarbamate, Zn(DDC)2, and methyl isobutyl ketone-iodide have been chosen as reagents. The elements can be extracted successively and quantitatively from strong mineral acids without adjusting pH of the solution, and separated into two groups suitable for gamma-ray spectrometry. Samples of 100–200 mg dry weight were double-sealed into polyethylene bags and irradiated in a swimming pool reactor with a thermal neutron flux of 1013n·cm−2·s−1 for 44 hours. After a cooling period of 1–3 days, the samples were digested with microgram quantities of carrier in concentrated nitric acid and sulfuric acid at 150°C for 3.5 hours in a teflon bomb, then extracted as described above. The reliability of the analytical method was checked using reference materials Horse Kidney IAEA H-8, Human Hair NIES-5 and Tomato Leaves NBS-1573. Most of the results obtained for reference materials agreed with the certified values12. Chinese autopsy samples of hair and liver were presented.

Keywords

Neutron Activation Analysis Simple Group Isobutyl Human Hair Swimming Pool 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1989

Authors and Affiliations

  • Guisun Zhuang
    • 1
  • Yinson Wang
    • 1
  • Min Zhi
    • 1
  • Wei Zhou
    • 1
  • Jianhua Yin
    • 1
  • Mingguang Tan
    • 1
  • Yuandi Cheng
    • 1
  1. 1.Shanghai Institute of Nuclear ResearchAcademia SinicaShanghai(People's Republic of China)

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