Fused Silica Microcapillaries Used for a Simple Miniaturization of the Electrified Liquid-Liquid Interface

Konrad Rudnicki, Lukasz Poltorak, Sławomira Skrzypek, Ernst J.R. Sudhölter

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)
24 Downloads (Pure)

Abstract

Short pieces of fused silica capillary tubing were used to support an electrified liquid-liquid interface. A methyl deactivated silica capillary having a diameter of 25 μm was filled with 1,2-dichloroethane solution and served as the organic part of the liquid-liquid interface. A nondeactivated fused silica capillary having a diameter of 5, 10, or 25 μm was filled with an aqueous HCl solution and served as the aqueous part of the electrochemical cell. For the latter, silanization of the capillary interior with chlorotrimethylsilane allowed for a successful phase reversal. All capillaries were characterized by ion transfer voltammetry using tetramethylammonium cation as a model ion. This simple, fast, and low-cost miniaturization technique was successfully applied for detection of the antibiotic ofloxacin.

Original languageEnglish
Pages (from-to)7112-7116
Number of pages5
JournalAnalytical Chemistry
Volume90
Issue number12
DOIs
Publication statusPublished - 21 May 2018

Fingerprint

Dive into the research topics of 'Fused Silica Microcapillaries Used for a Simple Miniaturization of the Electrified Liquid-Liquid Interface'. Together they form a unique fingerprint.

Cite this