应用化学 ›› 1988, Vol. 0 ›› Issue (1): 93-96.

• 研究简报 • 上一篇    

钴-5-Br-PADAP极谱催化波研究

张淑云   

  1. 西北纺织学院纺化系, 西安
  • 收稿日期:1987-01-15 修回日期:1987-07-06 出版日期:1988-02-10 发布日期:1988-02-10

ON THE POLAROGRAPHIC CATALYTIC WAVE OF Co(Ⅱ)-5-Br-PADAP

Zhang Shuyun   

  1. Northwestern Textile Institute, Xi'an
  • Received:1987-01-15 Revised:1987-07-06 Published:1988-02-10 Online:1988-02-10

摘要: 许多作者研究了某些有机试剂存在时钴的极谱行为.本文报道在氢氧化钠和盐酸羟胺底液中,钴-5-Br-PADAP配合物的极谱行为,证明峰电流为配合物吸附波.将铁分离后测定标钢中微量钴,与光度法结果一致,直接测定茶叶中钴,结果满意.

关键词: 极谱分析, 微量分析,

Abstract: The polarographie wave of Co(Ⅱ)-5-Br-PADAP complex has been studied in hydroxylamine-NaOH solution in the presence of 0.05-0.2M NaOH, 0.37—0.7% hydroxylamine and 1.2×10-6-2.1×10-6M 5-Br-PADAP. Co(Ⅱ) can be determined in the concentration from 1.7×10-9 to 3.4×10-7M. This method has been used for determining micro amount of cobalt in steel samples with a coefficient of variation of 6%. The property of the peak current and the composition of the complex have also been discussed.

Key words: Polarographic analysis, Micro analysis, Cobalt