Poly(Fe-4-vinylpyridine) modified composite graphite paste electrode for the analysis of iron(III)

Azhar Abdul Halim, S. A. Ghani

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An iron(III) selective electrode based on poly(Fe-4-vinylpyridine) modified composite graphite paste was investigated for its characteristics and mechanism of potential determining process. The electrode which was prepared through cathodic polymerization of the monomer 4-vinylpyridine and the Fe(III), showed Nernstian response towards Fe(III) in the 1.58 × 10-6 M to 6.3 × 10-3 M concentration range with slope 60±5 mV decade-1, in solutions of pH 2.5±0.5 and in the presence of 0.1 M NaClO4. The mechanism of the electrode's response appeared to follow a redox potential rather than an ion exchange. The steady state response was obtained in 15 s. The electrode was stable in temperature range of 35 ± 10°C. The drift in response was observed to be in the range of 3 ± 1 mV h-1. The electrode displayed high selectivity towards Fe(III), even in the presence of Fe(II). Slight interferences were observed from Br- and F-. The electrode response showed good correlation with selected standard method, AAS, with coefficient, r, equal to 0.96. Experiments on industrial and waste waters, using t-test indicated no significance difference. The electrode remained stable after seventeen days of continued use.

Original languageEnglish
Pages (from-to)155-165
Number of pages11
JournalInternational Journal of Environmental Analytical Chemistry
Volume79
Issue number2
Publication statusPublished - 2001

Fingerprint

Adhesive pastes
Graphite
Ointments
graphite
electrodes
Electrodes
electrode
Iron
iron
Composite materials
Industrial Waste
Ion Exchange
ion exchange
redox potential
Waste Water
4-vinylpyridine
ferryl iron
poly(4-vinylpyridine)
analysis
graphene

Keywords

  • Ion selective electrode
  • Iron
  • Speciation

ASJC Scopus subject areas

  • Analytical Chemistry
  • Environmental Science(all)
  • Environmental Chemistry

Cite this

@article{d0eabee7f8594dc58ab9074c5d8838eb,
title = "Poly(Fe-4-vinylpyridine) modified composite graphite paste electrode for the analysis of iron(III)",
abstract = "An iron(III) selective electrode based on poly(Fe-4-vinylpyridine) modified composite graphite paste was investigated for its characteristics and mechanism of potential determining process. The electrode which was prepared through cathodic polymerization of the monomer 4-vinylpyridine and the Fe(III), showed Nernstian response towards Fe(III) in the 1.58 × 10-6 M to 6.3 × 10-3 M concentration range with slope 60±5 mV decade-1, in solutions of pH 2.5±0.5 and in the presence of 0.1 M NaClO4. The mechanism of the electrode's response appeared to follow a redox potential rather than an ion exchange. The steady state response was obtained in 15 s. The electrode was stable in temperature range of 35 ± 10°C. The drift in response was observed to be in the range of 3 ± 1 mV h-1. The electrode displayed high selectivity towards Fe(III), even in the presence of Fe(II). Slight interferences were observed from Br- and F-. The electrode response showed good correlation with selected standard method, AAS, with coefficient, r, equal to 0.96. Experiments on industrial and waste waters, using t-test indicated no significance difference. The electrode remained stable after seventeen days of continued use.",
keywords = "Ion selective electrode, Iron, Speciation",
author = "{Abdul Halim}, Azhar and Ghani, {S. A.}",
year = "2001",
language = "English",
volume = "79",
pages = "155--165",
journal = "International Journal of Environmental Analytical Chemistry",
issn = "0306-7319",
publisher = "Taylor and Francis Ltd.",
number = "2",

}

TY - JOUR

T1 - Poly(Fe-4-vinylpyridine) modified composite graphite paste electrode for the analysis of iron(III)

AU - Abdul Halim, Azhar

AU - Ghani, S. A.

PY - 2001

Y1 - 2001

N2 - An iron(III) selective electrode based on poly(Fe-4-vinylpyridine) modified composite graphite paste was investigated for its characteristics and mechanism of potential determining process. The electrode which was prepared through cathodic polymerization of the monomer 4-vinylpyridine and the Fe(III), showed Nernstian response towards Fe(III) in the 1.58 × 10-6 M to 6.3 × 10-3 M concentration range with slope 60±5 mV decade-1, in solutions of pH 2.5±0.5 and in the presence of 0.1 M NaClO4. The mechanism of the electrode's response appeared to follow a redox potential rather than an ion exchange. The steady state response was obtained in 15 s. The electrode was stable in temperature range of 35 ± 10°C. The drift in response was observed to be in the range of 3 ± 1 mV h-1. The electrode displayed high selectivity towards Fe(III), even in the presence of Fe(II). Slight interferences were observed from Br- and F-. The electrode response showed good correlation with selected standard method, AAS, with coefficient, r, equal to 0.96. Experiments on industrial and waste waters, using t-test indicated no significance difference. The electrode remained stable after seventeen days of continued use.

AB - An iron(III) selective electrode based on poly(Fe-4-vinylpyridine) modified composite graphite paste was investigated for its characteristics and mechanism of potential determining process. The electrode which was prepared through cathodic polymerization of the monomer 4-vinylpyridine and the Fe(III), showed Nernstian response towards Fe(III) in the 1.58 × 10-6 M to 6.3 × 10-3 M concentration range with slope 60±5 mV decade-1, in solutions of pH 2.5±0.5 and in the presence of 0.1 M NaClO4. The mechanism of the electrode's response appeared to follow a redox potential rather than an ion exchange. The steady state response was obtained in 15 s. The electrode was stable in temperature range of 35 ± 10°C. The drift in response was observed to be in the range of 3 ± 1 mV h-1. The electrode displayed high selectivity towards Fe(III), even in the presence of Fe(II). Slight interferences were observed from Br- and F-. The electrode response showed good correlation with selected standard method, AAS, with coefficient, r, equal to 0.96. Experiments on industrial and waste waters, using t-test indicated no significance difference. The electrode remained stable after seventeen days of continued use.

KW - Ion selective electrode

KW - Iron

KW - Speciation

UR - http://www.scopus.com/inward/record.url?scp=0034871499&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034871499&partnerID=8YFLogxK

M3 - Article

VL - 79

SP - 155

EP - 165

JO - International Journal of Environmental Analytical Chemistry

JF - International Journal of Environmental Analytical Chemistry

SN - 0306-7319

IS - 2

ER -