Simultaneous determination of copper and cadmium in environmental water and tea samples by adsorptive stripping voltammetry

Mohammad Bagher GHOLIVAND; Alireza POURHOSSEIN

Makale detayları

Simultaneous determination of copper and cadmium in environmental water and tea samples by adsorptive stripping voltammetry

Yazarlar:

Mohammad Bagher GHOLIVAND | Alireza POURHOSSEIN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2011 Vol.35 Issue 6, pp.839-846

Belge Tipi:

Makale

Yayın Tarihi:

5/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000727719

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

A sensitive and selective method for the simultaneous determination of   copper and cadmium in seawater, river water, and tea samples is described.   The method is based on the adsorptive accumulation of 2,2--dithiosalicylic   acid complexes of these elements onto a hanging mercury drop electrode,   followed by reduction of adsorbed species by voltammetric scan using   differential pulse modulation. Optimal analytical conditions were as   follows: ligand concentration of 11 nM, pH of 9.5, and an adsorption   potential at --300 mV versus Ag/AgCl, with an accumulation time of 60 s. The   peak currents are proportional to the concentration of copper and cadmium   over the 1-80 and 1-240 ng mL-1 ranges with detection limits of 0.5 and   0.3 ng mL-1, respectively.

 

A sensitive and selective method for the simultaneous determination of   copper and cadmium in seawater, river water, and tea samples is described.   The method is based on the adsorptive accumulation of 2,2--dithiosalicylic   acid complexes of these elements onto a hanging mercury drop electrode,   followed by reduction of adsorbed species by voltammetric scan using   differential pulse modulation. Optimal analytical conditions were as   follows: ligand concentration of 11 nM, pH of 9.5, and an adsorption   potential at --300 mV versus Ag/AgCl, with an accumulation time of 60 s. The   peak currents are proportional to the concentration of copper and cadmium   over the 1-80 and 1-240 ng mL-1 ranges with detection limits of 0.5 and   0.3 ng mL-1, respectively.

Makale detayları

Simultaneous determination of copper and cadmium in environmental water and tea samples by adsorptive stripping voltammetry

Yazarlar: Mohammad Bagher GHOLIVAND | Alireza POURHOSSEIN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2011 Vol.35 Issue 6, pp.839-846

Belge Tipi: Makale

Yayın Tarihi: 5/2011

Belge Dili: Türkçe

Document ID (Org No.): 2000727719

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Mohammad Bagher GHOLIVAND | Alireza POURHOSSEIN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2011 Vol.35 Issue 6, pp.839-846

Belge Tipi:

Makale

Yayın Tarihi:

5/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000727719

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527