Cu(II), Ni(II), Co(II) ve Fe(II) Metaloftalosiyanintetrasülfonat Modifiye Kalem Ucu Elektrotlar ile Elektrokimyasal Dopamin Tayini

Levent ÖZCAN

Makale detayları

Cu(II), Ni(II), Co(II) ve Fe(II) Metaloftalosiyanintetrasülfonat Modifiye Kalem Ucu Elektrotlar ile Elektrokimyasal Dopamin Tayini

Yazarlar:

Levent ÖZCAN

Yayıncı:

Afyon Kocatepe University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi 2019 Vol.19 Issue 2, pp.291-300

Belge Tipi:

Makale

Yayın Tarihi:

9/2019

Belge Dili:

Türkçe

Document ID (Org No.):

2000845239

Sıklık:

İki Aylık

eISSN:

2149-3367

Anahtar kelimeler:

Özet:

 


In this study,
pencil graphite electrode (PGE) surface was modified by Cu(II), Ni(II), Co(II)
and Fe(II) metallophthalocyaninetetrasulfonates for determination of dopamine. Cyclic
voltammetric oxidation current values were determined by using the modified
electrodes in the Britton-Robinson buffer solution (BRT) containing 0.50 mM
dopamine at the pH range of 2.0 and 9.0. The highest current value was obtained
with Cu(II) phthalocyaninetetrasulfonate modified PGE (PGE/CuFSTS) in BRT at pH
2.0. The oxidation peak current value of PGE/CuFSTS is 30% higher than that of
unmodified one (PGE). In addition, at very low dopamine concentrations, high
peak current improvement was observed. For instance, the oxidation peak current
increase obtained by using differential pulse voltammetry (DPV) is 7 fold
higher than that of PGE in the BRT (pH 2.0) containing 10 µM dopamine. The
effect of adsorption time on the performance of PGE/CuFSTS electrodes was also
investigated and the optimum adsorption time was found as 5 minutes. The
electrochemical characterization of the electrodes obtained for the 5 minutes
of adsorption time (KUE/CuFSTS-5min) showed that the current was diffusion
controlled. Analytical parameters of the PGE/CuFSTS-5min electrode were
investigated by using DPV. DPV measurements showed that the curve for dopamine
determinations are linear in the range of 4.0-250 µM. The detection limit for
dopamine is 1.3 µM (1.3 x 10-6 M). The reproducibility of the modified
electrodes is 4.25% (RSD). The obtained results show that the developed
modified electrode has a high potential to use for dopamine detection.

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Makale detayları

Cu(II), Ni(II), Co(II) ve Fe(II) Metaloftalosiyanintetrasülfonat Modifiye Kalem Ucu Elektrotlar ile Elektrokimyasal Dopamin Tayini

Yazarlar:

Levent ÖZCAN

Yayıncı:

Afyon Kocatepe University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi 2019 Vol.19 Issue 2, pp.291-300

Belge Tipi:

Makale

Yayın Tarihi:

9/2019

Belge Dili:

Türkçe

Document ID (Org No.):

2000845239

Sıklık:

İki Aylık

eISSN:

2149-3367

Dopamin tayinin

Elektrokimyasal sensör

Metaloftalosiyanin tetrasülfonatlar

Kalem ucu elektrot

Sayı

Makale detayları

Cu(II), Ni(II), Co(II) ve Fe(II) Metaloftalosiyanintetrasülfonat Modifiye Kalem Ucu Elektrotlar ile Elektrokimyasal Dopamin Tayini

Yazarlar: Levent ÖZCAN

Yayıncı: Afyon Kocatepe University

Ana Başlıklar: Uygulamalı fizik

Dergi: Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi 2019 Vol.19 Issue 2, pp.291-300

Belge Tipi: Makale

Yayın Tarihi: 9/2019

Belge Dili: Türkçe

Document ID (Org No.): 2000845239

Sıklık: İki Aylık

eISSN: 2149-3367

Dopamin tayinin

Elektrokimyasal sensör

Metaloftalosiyanin tetrasülfonatlar

Kalem ucu elektrot

Sayı

Yazarlar:

Levent ÖZCAN

Yayıncı:

Afyon Kocatepe University

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi 2019 Vol.19 Issue 2, pp.291-300

Belge Tipi:

Makale

Yayın Tarihi:

9/2019

Belge Dili:

Türkçe

Document ID (Org No.):

2000845239

Sıklık:

İki Aylık

eISSN:

2149-3367