化学学报 ›› 1982, Vol. 40 ›› Issue (11): 1021-1028. 上一篇    下一篇

论文

涂锆石墨管石墨炉原子吸收法测定锗

高英奇, 倪哲明   

  1. 中国科学院环境化学研究所, 北京
  • 投稿日期:1981-09-09 发布日期:2013-06-03
  • 通讯作者: 高英奇

DETERMINATION OF GERMANIUM BY GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY USING A ZIRCONIUM-COATED TUBE

GAO YING-QI, NI ZHE-MING   

  1. Institute of Environmental Chemistry, Academia Sinica, Beijing
  • Received:1981-09-09 Published:2013-06-03

本文研究了石墨炉原子吸收法测定锗的条件。试验了某些金属盐对测定锗的基体改进效应以及应用涂锆石墨管的效果。实验证明,应用涂锆石墨管可使测定锗的灵敏度提高约4.5~5倍,原子化出现温度从应用普通管时的2050K降低到1540K,消除了记忆效应。此时,锗的原子化机理可能是氧化锗被碳化锆还原,然后金属锗蒸发。提出了氯化锗用苯萃取后苯层进样的锗的分析方法。本研究可应用于煤灰中高于0.5ppm锗的测定。

A method for the determination of germanium by graphite furnace atomic absorption spectrometry using a zirconium-coated tube was proposed. It was shown by experiment that in the presence of Zr, Fe, Ni, Mo or V a significant increase in sensitivity was observed for germanium.