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Flow Injection Analysis of Sulfide Using a Cinder/Tetracyano Nikelate Modified Screen‐Printed Electrode
Author(s) -
Zen JyhMyng,
Chang JenLin,
Chen PeiYan,
Ohara Reiko,
Pan KuanChang
Publication year - 2005
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200403147
Subject(s) - cinder , sulfide , flow injection analysis , amperometry , detection limit , hydrogen sulfide , electrode , bimetallic strip , chemistry , inorganic chemistry , analyte , materials science , electrochemistry , sulfur , chromatography , catalysis , organic chemistry , coal
Flow injection analysis (FIA) of sulfide is presented using a screen‐printed carbon electrode modified with a cinder/tetracyano nickelate hybrid (designated as cinder/NiTcSPE). Hybridization of NiTc was achieved in iron‐enriched industrial waste cinder material through the bimetallic formation of Fe III [Ni II (CN) 4 ]. The electrocatalytic oxidation of sulfide is mediated by the higher oxidation state of Ni in this hybrid‐bimetallic complex. The system shows a detection limit ( S/N =3) of 0.06 μM and a linear working range up to 1 mM in pH 10, 0.1 M KCl solution. Taking into account the relatively low volatility of the analyte in alkaline conditions, the system is ideally suited for the accurate detection of sulfide. The response of the electrode to sulfide is highly reproducible, thereby offering the potential development of a disposable amperometric sensor for sulfide. Selective detection of sulfide in cigarette smoke is presented in this study as an example of a real sample application.