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.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1989年第9期808-810,共3页
Chinese Journal of Analytical Chemistry
关键词
镍
分光光度法
析相
PADAP
5-Br-PADAP
Phase separation
Spectrophotometty
Nickel
