高等学校化学学报

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (1): 119.

• 研究简报 • 上一篇    下一篇

恒温石墨炉中基体对钾和镉的影响

郑衍生   

  1. 吉林大学化学系
  • 收稿日期:1982-09-15 出版日期:1984-02-24 发布日期:1984-02-24

MATRIX INTERFERENCES FOR CADMIUM AND POTASSIUM IN A CONSTANT-TEMPERATURE FURNACE

Zheng Yansheng   

  1. Department of Chemistry, Jilin University, Changchun
  • Received:1982-09-15 Online:1984-02-24 Published:1984-02-24

PDF (PC)

被引次数

2

摘要： 电热原子化原子吸收分析易受基体的干扰,使得准确度的提高受到限制.有关减少和消除这个影响已有报导[1-6]。Czobik等[6]人曾指出,为减少和消除基体的干扰,应设计一种具有时间和空间上等热条件的石墨炉。恒温石墨炉有上述的性质,用它作原子化器能消除和减少基体的影响。

Abstract: In the paper the interferences of A1(NO3)3, Ca(NO3)2, Ni(NO3)2, CaCl2,CuCl,FeCl and ZnCl2 on cadmium and potassium in the constant-temperature furnace were described. The experiment showed that the matrix interferences for cadmium were small. But A1(NO3)3 depressed the absorption of cadmium for Al(NO3)3/Cd(NO3)2 ratio of 3000. The depression of Al(NO3)3 on cadmium was increased with decrease of the concentration of cadmium. The absorption of potassium was enhanced using Al(NO3)3, Ni(NO3)2, CaCl2, CuCl2, FeCl3 and ZnCl2 as matrices.

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