铝-荧光镓极谱络合吸附波的研究  

Polarographic Adsorptive Complex Wave of Aluminium (Ⅲ)-Lumogallion System

作　　者：包晓玉 罗红霞[2] 李南强[2] 

机构地区：[1]河南南阳师专 [2]北京大学化学系,北京100871

出　　处：《分析化学》1999年第11期1329-1332,共4页Chinese Journal of Analytical Chemistry

摘　　要：在pH5.72的缓冲溶液中,用单扫示波极谱法可获得灵敏的铝(Ⅲ)-荧光镓络合吸附波.检测限达1.0×10^(-8)mol/L.测定了自来水中铝的含量,并测定了络合物组成和表面电极反应速率常数.In HAc-NaAc buffer solution at pH 5.72, a sensitive adsorptive complex wave of Al (III)-lumogallion(LMG) was obtained by single-sweep polarography. The change of peak height with theconcentration of aluminium is linear in the range from 3.0×10-8 mol/L to 1.0X10-5 mol/L. Thedetection limit is down to 1.0×10-8 mol/L. It was used to determine aluminium in tap water. Thecomposition of the complex was detected as Al(Ⅲ): LMG =1:2. The conditional stability constant wasdetermined as B = 1.9×1010. The rate constant of the surface electrochemical reaction was determined as

关 键 词：铝 荧光镓 单扫极谱法 测定 配合吸附波 

分 类 号：O614.31[理学—无机化学]