In situ electrochemical detection of trace metal vapors at bismuth doped carbon screen printed electrodes

Donglai Lu, Jeffrey LaBelle, Celine Le Ninivin, Stephane Mabic, Telis Dimitrakopoulos

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Volatile species of Pb, Cd and Zn were generated at room temperature by the addition of sodium tetrahydroborate(III) to an acidified solution of the analytes. The vapor-phase species were quickly adsorbed into a thin layer of highly porous hydrogel which was dip-coated on screen printed electrode for electrochemical detection using square wave anodic stripping voltammetric method. The square wave voltammetric stripping response is highly linear over the 10-80 ng range of Pb, Cd and Zn examined (2 min deposition), with a detection limit of 1 ng and good precision (RSD 7.4%). The attractive behavior of the new disposable carbon strip electrodes hold great promise for a simple, rapid, sensitive on-site real-time detection of trace metal vapors.

Original languageEnglish (US)
Pages (from-to)157-159
Number of pages3
JournalJournal of Electroanalytical Chemistry
Volume642
Issue number2
DOIs
StatePublished - Apr 15 2010

Keywords

  • Electrochemical sensor
  • Metal vapors
  • Screen printed electrode

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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