Anodic Stripping Voltammetric Behavior of Mercury in Chloride Medium and its Determination at a Gold Film Electrode

Füsun OKÇU; F. Nil ERTAŞ; H. İsmet GÖKÇEL; Hüseyin TURAL

Makale detayları

Anodic Stripping Voltammetric Behavior of Mercury in Chloride Medium and its Determination at a Gold Film Electrode

Yazarlar:

Füsun OKÇU | F. Nil ERTAŞ | H. İsmet GÖKÇEL | Hüseyin TURAL

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2005 Vol.29 Issue 4, pp.355-366

Belge Tipi:

Makale

Yayın Tarihi:

3/2005

Belge Dili:

Türkçe

Document ID (Org No.):

2000729063

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

The electrochemical behavior of aqueous Hg(II) ions at a  gold film electrode is described.  The effects of supporting  electrolyte and halide ions on the anodic stripping voltammetric  behavior of Hg(II) ions was illustrated to prepare a basis for the  analysis in real samples with high saline content.  The concentration  ratio of metallic mercury to halide ions at the electrode surface  determines the resulting peak characteristics.  The peak potentials in  particular shift in a more negative direction as the halide  concentration increases.  A comparative study with Cu(II) ions  revealed that a different mechanism is involved in their reoxidation  steps.  Mercuric ions were collected at 0.2 V from 0.1 M HClO4 medium  containing 3 x 10-3 M HCl and a detection limit of 0.12 ng/mL (S/N  = 3) was attained (RSD < 5%, n = 5).  The method was applied for the  determination of mercury in haemodialysis concentrates.  No  significant interference was observed from other possibly interfering  metallic ions.

 

The electrochemical behavior of aqueous Hg(II) ions at a  gold film electrode is described.  The effects of supporting  electrolyte and halide ions on the anodic stripping voltammetric  behavior of Hg(II) ions was illustrated to prepare a basis for the  analysis in real samples with high saline content.  The concentration  ratio of metallic mercury to halide ions at the electrode surface  determines the resulting peak characteristics.  The peak potentials in  particular shift in a more negative direction as the halide  concentration increases.  A comparative study with Cu(II) ions  revealed that a different mechanism is involved in their reoxidation  steps.  Mercuric ions were collected at 0.2 V from 0.1 M HClO4 medium  containing 3 x 10-3 M HCl and a detection limit of 0.12 ng/mL (S/N  = 3) was attained (RSD < 5%, n = 5).  The method was applied for the  determination of mercury in haemodialysis concentrates.  No  significant interference was observed from other possibly interfering  metallic ions.

Makale detayları

Anodic Stripping Voltammetric Behavior of Mercury in Chloride Medium and its Determination at a Gold Film Electrode

Yazarlar: Füsun OKÇU | F. Nil ERTAŞ | H. İsmet GÖKÇEL | Hüseyin TURAL

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2005 Vol.29 Issue 4, pp.355-366

Belge Tipi: Makale

Yayın Tarihi: 3/2005

Belge Dili: Türkçe

Document ID (Org No.): 2000729063

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Füsun OKÇU | F. Nil ERTAŞ | H. İsmet GÖKÇEL | Hüseyin TURAL

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2005 Vol.29 Issue 4, pp.355-366

Belge Tipi:

Makale

Yayın Tarihi:

3/2005

Belge Dili:

Türkçe

Document ID (Org No.):

2000729063

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527