Low Cost, Sensitive and Selective Chronoamperometric Determination of Vanillin at a Disposable Poly(Eriochrome Black T)/Pencil Graphite Electrode

Serkan KARAKAYA

doi:https://doi.org/10.24323/akademik-gida.729976

Article Details

Low Cost, Sensitive and Selective Chronoamperometric Determination of Vanillin at a Disposable Poly(Eriochrome Black T)/Pencil Graphite Electrode

Authors:

Serkan KARAKAYA

Publisher:

Sidas Medya A.Ş.

Main Topics:

Food technology

Journal:

Akademik Gıda 2020 Vol.18 Issue 1, pp.1-11

Document Type:

Article

Publication Date:

4/2020

Document Language:

English

Document ID (Org No.):

2000864712

Frequency:

Monthly

eISSN:

2148-015X

pISSN:

1304-7582

DOI:

https://doi.org/10.24323/akademik-gida.729976

Keywords:

Abstract:

 

In this study, low cost, sensitive and selective chronoamperometric determination of vanillin (VNL) is firstly achieved by using a disposable poly(Eriochrome Black T) modified pencil graphite electrode (poly(EBT)/PGE). Electro-oxidation behavior of 1.0 mM VNL was investigated at both poly(EBT)/PGE and PGE by the cyclic voltammetry (CV) method. CV measurements showed that oxidation current of VNL at poly (EBT)/PGE was much higher than the bare one. Furthermore, the pH effect on electro-oxidation current of VNL was tested at different pH values (2.0-8.0) of Britton Robinson Buffer solution (BRBS) for poly(EBT)/PGE and the highest current was obtained at pH 7.0 BRBS. Significant analytical parameters such as linear response range (LRR), limit of detection (LOD), and sensitivity were found as 0.050-10.0 µM, 0.013 µM and 5355 µA mM-1 cm-2, respectively. The fabricated sensor was tested on a VNL-containing sample (VNL content: 3.0%) and the result (3.04% ±0.01) obtained from the applicability study showed that the proposed sensor enables the determination of VNL with high accuracy and precision.

 

Bu çalışmada, vanilinin (VNL) düşük maliyetli, duyarlı ve seçici kronoamperometrik tayini tek kullanımlık bir poli(Eriokrom Siyahı T) modifiye kalem grafit elektrodun (poly(EBT)/PGE) kullanılması ile ilk defa gerçekleştirilmiştir. 1.0 mM VNL’nin elektro-yükseltgenme davranışı, hem PGE’de hem de poly(EBT)/PGE’de döngüsel voltammetri (CV) metodu ile incelenmiştir. CV ölçümleri poly(EBT)/PGE’deki yükseltgenme akımının yalın elektroda göre daha yüksek olduğunu göstermiştir. Ayrıca, poly(EBT)/PGE’de VNL’nin yükseltgenme akımına pH’nın etkisi, farklı pH değerlerindeki (2.0-8.0) Britton Robinson tampon çözeltilerinde (BRBS) test edilmiş ve en yüksek akımın pH 7.0 BRBS’de alındığı gözlenmiştir. Doğrusal yanıt aralığı (LRR), belirtme alt sınırı (LOD) ve duyarlılık gibi önemli analitiksel parametreler sırasıyla 0.050-10.0 µM, 0.013 µM ve 5355 µA mM-1 cm-2 olarak bulunmuştur. Tasarlanan sensör, VNL içeren bir örnekte (VNL içeriği %3.0) başarıyla test edilmiş ve uygulanabilirlik çalışmasından elde edilen sonuç (%3.04 ±0.01), önerilen sensörün, VNL’nin yüksek doğrulukta ve kesinlikte tayinine imkân sağladığını göstermiştir.

Article Details

Low Cost, Sensitive and Selective Chronoamperometric Determination of Vanillin at a Disposable Poly(Eriochrome Black T)/Pencil Graphite Electrode

Authors:

Serkan KARAKAYA

Publisher:

Sidas Medya A.Ş.

Main Topics:

Food technology

Journal:

Akademik Gıda 2020 Vol.18 Issue 1, pp.1-11

Document Type:

Article

Publication Date:

4/2020

Document Language:

English

Document ID (Org No.):

2000864712

Frequency:

Monthly

eISSN:

2148-015X

pISSN:

1304-7582

DOI:

https://doi.org/10.24323/akademik-gida.729976

Vanilin

Kalem grafit elektrot

Kronoamperometri

Döngüsel voltammetri

Elektrokimyasal sensör

Issues

Article Details

Low Cost, Sensitive and Selective Chronoamperometric Determination of Vanillin at a Disposable Poly(Eriochrome Black T)/Pencil Graphite Electrode

Authors: Serkan KARAKAYA

Publisher: Sidas Medya A.Ş.

Main Topics: Food technology

Journal: Akademik Gıda 2020 Vol.18 Issue 1, pp.1-11

Document Type: Article

Publication Date: 4/2020

Document Language: English

Document ID (Org No.): 2000864712

Frequency: Monthly

eISSN: 2148-015X

pISSN: 1304-7582

DOI: https://doi.org/10.24323/akademik-gida.729976

Vanilin

Kalem grafit elektrot

Kronoamperometri

Döngüsel voltammetri

Elektrokimyasal sensör

Issues

Authors:

Serkan KARAKAYA

Publisher:

Sidas Medya A.Ş.

Main Topics:

Food technology

Journal:

Akademik Gıda 2020 Vol.18 Issue 1, pp.1-11

Document Type:

Article

Publication Date:

4/2020

Document Language:

English

Document ID (Org No.):

2000864712

Frequency:

Monthly

eISSN:

2148-015X

pISSN:

1304-7582

DOI:

https://doi.org/10.24323/akademik-gida.729976