Acta Chimica Sinica ›› 2000, Vol. 58 ›› Issue (10): 1291-1295. Previous Articles     Next Articles

Original Articles

萃取色层分离同位素稀释ICP-MS测定空气中费克 量钚

金玉仁;章连众;韩世钧;朱凤蓉;白峻峰;周国庆;马锋;张利兴   

  1. 浙江大学化学系.杭州(310027);西北核技术研究所.西安(710000)
  • 出版日期:2000-10-15 发布日期:2000-10-15

Determination of fetogram plutonium by extraction chromatography using isotope dilution inductively coupled plasma mass spectrometry

Jin Yuren;Zhang Lianzhong;Han Shijun;Zhu Fengrong;Bai Junfeng;Zhou Guoqing;Ma Feng;Zhang Lixing   

  1. Zhejiang Univ, Dept Chem.Hangzhou(310027);NW Inst Nucl Technol, POB 69.Xian(710000)
  • Online:2000-10-15 Published:2000-10-15

This work reports the determination of fetogram plutonium using isotope dilution ICP-MS. The interference of protonated uranium at m/z of 239, with a determined UH^+/U^+ ratio of 4.6×10^-^5, was removed by using tri-n-octylamine extraction chromatography. The separation factor of 10^4 was achieved for uranium and the recovery of plutonium was greater than 75%. By applying isotope dilution, fetogram range of plutonium was measured using a high-resolution ICP- MS with a sample volume of less than 1mL. The limit of detection of ^2^3^9Pu is 4.5×10^-^1^5 g/mL for standard solution, and 16.3×10^- ^1^5g/mL for real sample with matrix. The concentration of ^2^3^9Pu in region atmosphere was determined at a level of (4.8±2.9)×10^- ^1^7g/m^3.

Key words: EXTRACTION, PLUTONIUM, TRIOCTYLAMINE

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