Determination of trace amounts of carcinogenic substances: Adsorptive stripping voltammetry of 1-[4′ -(phenylazo)phenyl]-3,3-dimethyltriazene at a hanging mercury drop electrode

Jiří Barek, Arnold G. Fogg

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

1-[4′-(Phenylazo)phenyl]-3,3-dimethyltriazene can be determined in the range from 1 × 10-5 to 2 × 10-7 mol dm 3 by direct current or differential-pulse voltammetry at a hanging mercury drop electrode. Direct current adsorptive stripping voltammetry can be used in the range from 2 × 10-8 to 10 × 10-8 mol dm -3 and differential-pulse adsorptive stripping voltammetry in the range from 1 × 10-8 to 2 × 10-11 mol dm -3. The extremely high sensitivity in the latter instance was achieved by using 200-fold diluted Britton-Robinson buffer as a base electrolyte together with a long accumulation time (up to 30 min at 1 × 10 -11 mol dm 3). The relative standard deviation (seven determinations at 2 × 10-11 mol dm-3) was 8.6%.

Original languageEnglish
Pages (from-to)751-755
Number of pages5
JournalThe Analyst
Volume117
Issue number4
DOIs
Publication statusPublished - 1 Jan 1992
Externally publishedYes

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Keywords

  • 1-[4′-(Phenylazo)phenyl]-3,3-dimethyltriazene determination
  • Adsorptive stripping voltammetry
  • Determination of carcinogens

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy
  • Electrochemistry

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