OSCILLOPOLAROGRAPHIC ADSORPTIVE WAVE DETERMINATION OF MICROAMOUNTS OF ORTHOPHOSPHATE

被引：5

作者：

CHEN, LY

机构：

[1] Department of Chemistry, Jishou University, Hunan

来源：

TALANTA | 1992年 / 39卷 / 07期

关键词：

D O I：

10.1016/0039-9140(92)80092-R

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In the system HCl Sb(III)-ammonium molybdate-acetone butanone, PO43-, Sb(III) and Mo(VI) form a ternary heteropoly acid, which can be adsorbed on a dropping mercury electrode and reduced to a heteropoly blue. The electrochemical reaction produces a sensitive polarographic wave with peak potential of -0.42 V vs. SCE. The limit of determination of phosphate is 6 x 10(-8)M. The coefficients of variance are 10 and 3% for 0.1 and 1-mu-M phosphate, respectively.

引用

页码：765 / 768

页数：4