SIOC English
化学学报
高级检索

化学学报 ›› 1958, Vol. 24 ›› Issue (5): 352-355. 上一篇    下一篇

论文

大量铜存在时镍的比色测定

郭小伟   

  1. 冶金工业部地质局鞍山分局检验室 陕西省冶金局研究所
  • 投稿日期:1957-07-13 发布日期:2013-06-03

PHOTOMETRIC DETERMINATION OY NICKEL IN THE FRESENCE OF LARGE AMOUNT OF COPPER

KWAUK SHEAU-WEI   

  1. Laboratory of Anshan Branch, Bureau of Geology, Ministry of Metallurgical Industry
  • Received:1957-07-13 Published:2013-06-03

PDF

589

被引次数

1

本文报告用丁二肟法比色测定镍时,用EDTA作为铜的隐蔽剂的可能性。找出:(1)若在加丁二肟前加EDTA,则镍及铜均不能形成丁二肟络合物。(2)若在先加丁二肟再加EDTA,则丁二肟镍不变,而相应的铜络合物破坏(在强硷性溶液中破坏不完全)。文中叙述在大量铜存在时少量镍的测定法。当铜量不超过镍一千倍时,可得准确的结果。钴、锰以及大量的铬、钒及银干扰。

The possibility of using EDTA as a masking agent for copper in the photometric determination of nickel by the dimethyglyoxime method has been inveatigate3. It is found that (1) neither the color of the nickel nor that of the copper complex can be formed if EDTA is added before the dimethyglyoxime reagent. (2) If FDTA is added ;after the color ha.s been developed, the nickel complex remains unchanged while the copper complex is destroyed; but in strong alkaline solution, the dimethylglyoxime-copper complex appears to be more stable, and cannot be completely destroyed by EDTA.