Voltammetric determination of dinitronaphthalenes using a silver solid amalgam paste electrode

Jana Tvrdikova, Ales Danhel, Vlastimil Vyskocil, Jiri Barek

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The electrochemical behavior and application of a new sensor, a silver solid amalgam paste electrode (AgSA-PE), based on the mixture of a fine silver solid amalgam powder (60:40 (wH g /wA g )) and a suitable organic pasting liquid (Paraffin oil) in a ratio of 20:1 (w/w), was investigated in an aqueous-methanolic media (1:1). This alternative working electrode provides simple preparation and handling, adequate mechanical stability, easily renewable electrode surface, sufficiently wide cathodic potential window (up to -1200 mV within a pH range of 2.7 - 12.3), and sufficient sensitivity without any necessary pretreatment. The practical usability of the AgSA-PE was verified by the development of voltammetric methods for the determination of selected environmentally important pollutants (1,3-, 1,5-, and 1,8-dinitronaphthalenes) in an aqueous-methanolic media (1:1). The differential pulse voltammetric methods at AgSA-PE give linear concentration dependences in the range of 1 - 100 μmol l-1 with limits of detection of about 1 μmol l-1 in a mixture of Britton-Robinson buffer of appropriate pH and methanol (1:1).

Original languageEnglish
Pages (from-to)411-416
Number of pages6
JournalAnalytical Sciences
Volume28
Issue number4
DOIs
Publication statusPublished - 1 Jan 2012
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry

Fingerprint Dive into the research topics of 'Voltammetric determination of dinitronaphthalenes using a silver solid amalgam paste electrode'. Together they form a unique fingerprint.

  • Cite this