Polarographic and voltammetric determination of N,N-dimethyl-4-amino-4′-sulfoazobenzene

Jiří Barek, Pham Tuan Hai, Viktor Mejstri'k, Josino C. Moreira, Jiří Zima

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The polarographic behaviour of N,N-dimethyl-4-amino-4′-sulfoazobenzene was investigated by tast polarography and differential pulse polarography at a dropping mercury electrode, constant-potential coulometry at a large area mercury electrode and cyclic voltammetry at a hanging mercury drop electrode. Optimum conditions have been found for its determination by tast polarography in the concentration range of 2-100 μmol l-1, differential pulse polarography at a dropping mercury electrode in the concentration range of 0.2-100 μmol l-1 and by differential pulse voltammetry at a hanging mercury drop electrode in the concentration range of 0.02-10 μmol l-1. The sensitivity of the determination can be further improved by adsorptive accumulation of the test substance on the hanging mercury drop electrode. Three-minute accumulation in stirred solution allows determination in the range of 0.2-100 nmol l-1.

Original languageEnglish
Pages (from-to)597-608
Number of pages12
JournalCollection of Czechoslovak Chemical Communications
Volume62
Issue number4
DOIs
Publication statusPublished - 1 Jan 1997
Externally publishedYes

Keywords

  • N,N-dimethyl-4-amino-4′-sulfoazobenzene
  • Polarography
  • Voltammetry

ASJC Scopus subject areas

  • Chemistry(all)

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