Electrooxidation of hydrazine by carminic acid as a mediator on a glassy carbon electrode

Electrooxidation of hydrazine by carmini A

Makale detayları

Electrooxidation of hydrazine by carminic acid as a mediator on a glassy carbon electrode

Yazarlar:

Electrooxidation of hydrazine by carmini A

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2010 Vol.34 Issue 2, pp.229-240

Belge Tipi:

Makale

Yayın Tarihi:

1/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000728098

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

Electrocatalytic oxidation of hydrazine on a glassy carbon  electrode with carminic acid as a homogeneous mediator in 0.1 M  phosphate buffer solution (pH 8.0) was studied.  Cyclic voltammetry  study showed that the catalytic current of the system depends on the  concentration of hydrazine.  The magnitude of the peak current  obtained by linear sweep voltammetry for carminic acid increased  sharply in the presence of hydrazine and proportional to the hydrazine  concentration in the ranges of 5.0-800.0 m M and the detection limit  was 3.0 m M by this technique.  The detection limit was promoted by  differential pulse voltammetry and decreased to 0.03 m M.  The diffusion coefficient of hydrazine was estimated using  chronoamperometry.  The chronoamperometry studies were also used to  determine the rate constant for catalytic reaction of carminic acid  with hydrazine.  The experimental results showed that the peak current  varied in the presence of different bivalence and more, metal cations,  but these interferences were omitted in the alkaline media and in the  presence of EDTA, while almost all anions and univalence metal cations  had no effect on the peak current of hydrazine.  The proposed method  was used for analysis of hydrazine in real samples.

 

Electrocatalytic oxidation of hydrazine on a glassy carbon  electrode with carminic acid as a homogeneous mediator in 0.1 M  phosphate buffer solution (pH 8.0) was studied.  Cyclic voltammetry  study showed that the catalytic current of the system depends on the  concentration of hydrazine.  The magnitude of the peak current  obtained by linear sweep voltammetry for carminic acid increased  sharply in the presence of hydrazine and proportional to the hydrazine  concentration in the ranges of 5.0-800.0 m M and the detection limit  was 3.0 m M by this technique.  The detection limit was promoted by  differential pulse voltammetry and decreased to 0.03 m M.  The diffusion coefficient of hydrazine was estimated using  chronoamperometry.  The chronoamperometry studies were also used to  determine the rate constant for catalytic reaction of carminic acid  with hydrazine.  The experimental results showed that the peak current  varied in the presence of different bivalence and more, metal cations,  but these interferences were omitted in the alkaline media and in the  presence of EDTA, while almost all anions and univalence metal cations  had no effect on the peak current of hydrazine.  The proposed method  was used for analysis of hydrazine in real samples.

Makale detayları

Electrooxidation of hydrazine by carminic acid as a mediator on a glassy carbon electrode

Yazarlar: Electrooxidation of hydrazine by carmini A

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2010 Vol.34 Issue 2, pp.229-240

Belge Tipi: Makale

Yayın Tarihi: 1/2010

Belge Dili: Türkçe

Document ID (Org No.): 2000728098

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Electrooxidation of hydrazine by carmini A

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2010 Vol.34 Issue 2, pp.229-240

Belge Tipi:

Makale

Yayın Tarihi:

1/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000728098

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527