Simultaneous determination of trace elements As, Se, Cu and Zn in biological materials by RNAA

Guisun Zhuang; Yinsong Wang; Mingguang Tan; Min Zhi; Yuanxun Zhang; Yuandi Cheng

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Simultaneous determination of trace elements As, Se, Cu and Zn in biological materials by RNAA

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- Simultaneous determination of trace elements As, Se, Cu and Zn in biological materials by RNAA
- Nuclear Techniques Vol. 09, Issue 10, (1986)
- 作者机构：
  
  中国科学院上海原子核研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：03 February 1986，
  
  Published：1986-10
- 稿件说明：
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Guisun Zhuang, Yinsong Wang, Mingguang Tan, et al. Simultaneous determination of trace elements As, Se, Cu and Zn in biological materials by RNAA[J]. Nuclear techniques, 1986, 09(10): 39-41,63.
DOI：

Guisun Zhuang, Yinsong Wang, Mingguang Tan, et al. Simultaneous determination of trace elements As, Se, Cu and Zn in biological materials by RNAA[J]. Nuclear techniques, 1986, 09(10): 39-41,63. DOI：

摘要

随着痕量元素分析技术的发展，在生命科学领域里，某些痕量元素（如砷、铜、锌和硒等）和人体健康与疾病的关系的研究越来越受到人们的重视。用仪器中子活化分析法虽然可以测定周期表中大约2/3以上的元素，但由于经反应堆辐照后，生物样品中产生的强放射性

Br、

K、

P、

Na的干扰，不可能对动物和人体器官中某些重要痕量元素作直接测定，必须在仪器测定之前进行放化分离。Giradi

[1]

报道了采用无机离子交换剂HAP除钠的方法，在生物样品中子活化分析中得到广泛应用，但在除Na过程中对As和Se也有部分吸附损失。近年来提出的硫化物分组沉淀法和锌汞齐提取法

，虽然方法比较简便，可把被测元素和基体干扰元素进一步分组分离，但其测定灵敏度仍然不能满足仅有几十ppb含量样品的分析分离要求。本文采用溴化物体系蒸馏法

[4]

，蒸馏分离出挥发性元素As、Se，并用Dowex1×8树脂进一步分离除去干扰元素Br和Sb。蒸残液中的

Cu与二乙基二硫代氨基甲酸钠（NaDDTC）络合

[5]

后用四氯化碳萃取分离，使

Cu与干扰元素

Na和

Zn分开，结合高分辨率的Ge（Li）探测器可测定生物组织中的砷、硒、铜和锌的痕量元素含量。

Abstract

This paper describes the determinations of As

Cu and Zn in biological materials by RNAA. The trace elements are separated from interfering activities by distillation

solvent extraction with NaDDTC and anion exchange with DOWEX 1×8. The samples and standards are irradiated at a thermal neutron flux of 7.5×10

n/cm

• s for 65h and separated after decay of 3—4 days. The reliability of the method

checked with NBS-1577 IAEA-H8 and NIES-5. Most of the results are in agreement with values certified in the interlaboratory study.

关键词

Keywords

references

F. Giradi , J. Radioanal. Chem. , 1 , 169 （ 1968 ）.

M. Czauderna , J. Radioanal. Chem. , 89 , 1 , 13 （ 1985 ）.

M. Czauderna , Intern. J. All, Radiat. Isotopes , 35 , 7 , 681 （ 1984 ）.

J. Kucera , J. Raioanal. Chem. , 63 , 1 , 23 （ 1981 ）.

Armin Armin and Sixto Sixto , Anal. Chem. , 47 , 11 , 1813 （ 1975 ）.

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