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
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1999年第11期1329-1332,共4页
Chinese Journal of Analytical Chemistry
关键词
铝
荧光镓
单扫极谱法
测定
配合吸附波
Aluminium, lumogallion, single-sweep polarography, cyclic voltammograms, adsorptire complex wave
