Cathodic stripping voltammetric determination of selenium(IV) at a nafion coated mercury film electrode modified with 3,3′-diaminobenzidine

Hao Yun Yang, I. Wen Sun

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Determination of selenium(lV) was investigated on a 3,3′-diaminobenzidine/Nafion/mercury film modified glassy carbon electrode (DNMFE). The 3,3′-diaminobenzidine/Nafion coating solution was irradiated by a tungsten light bulb to oxidize the 3,3′-diaminobenzidine. This coating solution was then spin-coated onto a glassy carbon electrode. Subsequently, mercury was electrodeposited onto the electrode surface. Selenium(IV) was preconcentrated onto the DNMFE from the sample solution saturated with ethylenediaminetetraacetate (EDTA) at an accumulation potential of -0.35 V, and determined by cathodic square-wave stripping voltammetry (SWSV). Various parameters affecting the selenium determination were examined. With 5 min accumulation, the analytical signal was linear from 1 to 300 μgL-1, and the detection limit was 0.48 μgL-1. The proposed procedure showed a good accumulation efficiency for selenium and good resistance to interferences from metal ions as well as surface-active compounds.

Original languageEnglish
Pages (from-to)1476-1480
Number of pages5
JournalElectroanalysis
Volume12
Issue number18
DOIs
Publication statusPublished - 2000 Jan 1

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Electrochemistry

Fingerprint Dive into the research topics of 'Cathodic stripping voltammetric determination of selenium(IV) at a nafion coated mercury film electrode modified with 3,3′-diaminobenzidine'. Together they form a unique fingerprint.

  • Cite this