高等学校化学学报 ›› 1985, Vol. 6 ›› Issue (4): 301.

• 研究论文 • 上一篇    下一篇

稀土元素的原子吸收光谱分析研究(Ⅱ)——在空气-乙炔焰中双络合剂对镱的增感效应

周执明, 吴德怀, 吴秀勤, 梁海英   

  1. 浙江工学院
  • 收稿日期:1983-08-06 出版日期:1985-04-24 发布日期:1985-04-24

Atomic Absorption Spectrophotometric Studies on Rare Earth Element (Ⅱ)—The Enhancement Effect of Double Complexing Agents on Ytterbium in an Air-Acetylene Flame

Zhou Zhiming, Wu Dehuai, Wu Xiuqin, Liang Haiying   

  1. Zhejiang Institute of Technology, Hangzhou
  • Received:1983-08-06 Online:1985-04-24 Published:1985-04-24

摘要: 本文在空气-乙炔焰中,研究了双络合剂体系对镱的增感效应,发现了三种增感类型.试验了无机酸、普通元素和非镱稀土的干扰及其消除.所拟定的方法用于合成试样中镱的测定,结果满意.

Abstract: The enhancement effect of double complexing agents on ytterbium is studied.Citrate, tartrate,EDTA, urea, and 5-sulfosalicylic acid are chosen as complexing agents. When the sum of the molar concentration of two complexing agents is kept constant as their ratio is varied, three types of enhancement effect, namely competitive, additive and synergistic, are found. The mechanism of the enhancement, the distribution of ytterbium atoms in the flame and the interferences of the concomitant elements and their elimination are studied. The sensitivity is increased to 0.15ppm/1% absorption. The results show that double complexing agents are more sensitive and selective for the determination of ytterbium than single complexing agents.

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