5-Br-PADAP-TritonX-100析相光度法测定痕量镍  

PHASE SEPARATION AND PHOTOMETRIC DETERMINATION OF TRACE NICKEL WITH 5-Br-PADAP AND TRITON X-100

作　　者：周发连[1] 刘冬华[1] 

机构地区：[1]华东地质学院工业分析系

出　　处：《分析化学》1989年第9期808-810,共3页Chinese Journal of Analytical Chemistry

摘　　要：本文研究了5-Br-PADAP-TritonX-100析相体系中镍的析相及显色反应。在pH5.3—7.2时,最大吸收波长为565nm,ε_(max)=1.08×10~5L.mol^(-1)·com^(-1),0—8.0μg/5.5ml镍服从比尔定律,干扰离子存在时,可以用丁二酮肟萃取分离,已用于水系沉积物及岩石中镍的测定。The phase separation and colour reactions of Ni with 5-Br-PADAP and Triton X-100 are studied. The nickel complex is formed in a buffer solution at pH 5.3-—7.2 having an absorption peak at 565nm.The molar absorptivity is 1.08×10~5 L·mol^(-1)·cm^(-1). Beer's law is obeyed for O--8.0μg Ni/5.5ml. The interfering elements can be separated by the extraction of dimethylglyoxime and n-butyl alcohol.

关 键 词：镍 分光光度法 析相 PADAP 

分 类 号：O614.813[理学—无机化学]