高等学校化学学报 ›› 1985, Vol. 6 ›› Issue (8): 689.

• 研究论文 • 上一篇    下一篇

采用偏振塞曼原子吸收分析直接测定磷酸盐中微量铁

何金兰, 唐玉蓉   

  1. 武汉大学测试中心
  • 收稿日期:1984-06-23 出版日期:1985-08-24 发布日期:1985-08-24

Direct Determination of Trace Amount of Iron in the Phosphate by the Polaried Zeeman A. A. S.

He Jinlan, Tang Yurong   

  1. Test Centre, Wuhan University, Wuhan
  • Received:1984-06-23 Online:1985-08-24 Published:1985-08-24

摘要: 高浓度基体中测定微量铁时,排除基体干扰,多是采用络合萃取、沉淀分离等方法。Inovc等人用二巯基顺丁二氰与铁以1:3络合,其络合物与四丁基铵阳离子(tba+)生成离子对,用MIBK萃取后进行测定,手续繁杂费时,灵敏度仅为0.039μg/ml 1%abs,范键同志在测金属铬中的铁时,采用不分离的方法,溶样后直接测定,方法简单,但指出磷酸在火焰中对铁有抑制作用。

Abstract: In this paper, the determination of the trace amount of iron in the phosphate by AASwith graphite furnace atomizer is discussed. It was found that the interference of PO4-3 and some metal for iron can be suppressed by the use of the higher charring temperature (1300℃) and Zeeman effect.After the sample is dissolved, it can be measured directly, without using any way of separation.

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