Sono-cathodic stripping voltammetry of manganese at a polished boron-doped diamond electrode: application to the determination of manganese in instant tea

被引：114

作者：

Saterlay, AJ ^{[1
]}

Foord, JS ^{[1
]}

Compton, RG ^{[1
]}

机构：

[1] Univ Oxford, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England

来源：

ANALYST | 1999年 / 124卷 / 12期

关键词：

D O I：

10.1039/a906851a

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Ultrasonically assisted cathodic stripping voltammetry at a boron-doped diamond electrode was developed for the detection of manganese. Differential-pulse voltammetry was used to give the analytical signal from a cathodic strip of electrodeposited MnO2; linearity was observed from 10(-11) M to at least 3 x 10(-7) M, with 10(-11) M being the detection limit for a 2 min deposition. The procedure involves both ultrasonic-anodic deposition of MnO2 and ultrasonic-cathodic stripping. This novel analytical tool is robust, reproducible, mercury free, oxygen insensitive and highly specific towards manganese. The differential-pulse sono-cathodic stripping voltammetric technique was used to determine successfully the manganese content of two instant tea samples, giving excellent agreement with independent AAS analyses.

引用

页码：1791 / 1796

页数：6

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