PAR分光光度法测定钴和镍  

Determination of Cobalt and Nickel by PAR Spectrophotometry

作　　者：方皓文 开小明[2] 

机构地区：[1]安徽省桐城师范高等专科学校理工系,安徽省桐城市龙眠西路58号231400 [2]安徽省安庆师范学院化学化工学院

出　　处：《光谱实验室》2012年第3期1915-1917,共3页Chinese Journal of Spectroscopy Laboratory

基　　金：安徽省教育厅科研项目(KJ2012Z407)

摘　　要：进行了用PAR分光光度法同时测定钴和镍的研究。在pH=5的NaAc-HAc缓冲溶液中,钴和镍可与显色剂4-(2-吡啶偶氮)间苯二酚(PAR)的溶液形成稳定的络合物,络合物的吸收光谱重叠相互干扰,经过实验确定以508.0、568.0nm作为钴(Ⅱ)、镍(Ⅱ)的测量波长,应用双波长线性回归法可同时测定。方法简单、快速、灵敏度高。The investigation of simultaneous determination of cobalt and nickel by 4-（2-pyridineazo） resorcinol（PAR） spectrophotometry was carried out.In the butter solution of NaAc-HAc at pH=5,the cobalt and nickel can form the stable complexes with the color reagent of PAR.The absorption spectra of complexes were seriously overlapped,two wavelengths for 508,568nm were selected as determining wavelength of cobalt and nickel after many tests,and dual wavelength linear regression method was set up to use for simultaneous determination of cobalt and nickel.The method is simple,rapid with high sensitivity.

关 键 词：4-(2-吡啶偶氮)间苯二酚 分光光度法 均匀设计 钴 镍 

分 类 号：O657.32[理学—分析化学] O625.31[理学—化学]