Kinetic spectrophotometric determination of trace copper(II) ions by their catalytic effect on the reduction of brilliant cresyl blue by ascorbic acid

Halil İbrahim ULUSOY; Ramazan GÜRKAN; Mehmet AKÇAY

Makale detayları

Kinetic spectrophotometric determination of trace copper(II) ions by their catalytic effect on the reduction of brilliant cresyl blue by ascorbic acid

Yazarlar:

Halil İbrahim ULUSOY | Ramazan GÜRKAN | Mehmet AKÇAY

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2011 Vol.35 Issue 4, pp.599-612

Belge Tipi:

Makale

Yayın Tarihi:

3/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000727799

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

In the present study, a novel catalytic-kinetic  spectrophotometric method was developed for the determination of trace  amounts of copper.  It is based on the catalytic effect of Cu(II) on  the reduction of brilliant cresyl blue (BCB) by ascorbic acid in pH  5.0 acetate buffer medium.  The reaction was monitored  spectrophotometrically by measuring the decrease in absorbance of BCB  at 624 nm.  The operating conditions regarding concentration of  reagents, pH, time, and temperature were established and optimized in  detail.  The working curve was linear in the concentration range of  0.1-5.0 m g L-1.  The maximum percentage error and standard  deviation for 5 replicate determination of the 3 m g L-1 Cu(II)  were 3.20 and 0.45, respectively.  The detection limit and  quantification limit were 0.025 and 0.086 m g L-1, respectively.  The procedure was successfully applied to determination of dissolved  copper levels of 3 different natural spring waters and artificially  prepared wastewater samples.  The accuracy of the proposed kinetic  method was tested by means of 5 replicate analyses of the certified  standard materials, SRM 1640, based on 2 independent methods.

 

In the present study, a novel catalytic-kinetic  spectrophotometric method was developed for the determination of trace  amounts of copper.  It is based on the catalytic effect of Cu(II) on  the reduction of brilliant cresyl blue (BCB) by ascorbic acid in pH  5.0 acetate buffer medium.  The reaction was monitored  spectrophotometrically by measuring the decrease in absorbance of BCB  at 624 nm.  The operating conditions regarding concentration of  reagents, pH, time, and temperature were established and optimized in  detail.  The working curve was linear in the concentration range of  0.1-5.0 m g L-1.  The maximum percentage error and standard  deviation for 5 replicate determination of the 3 m g L-1 Cu(II)  were 3.20 and 0.45, respectively.  The detection limit and  quantification limit were 0.025 and 0.086 m g L-1, respectively.  The procedure was successfully applied to determination of dissolved  copper levels of 3 different natural spring waters and artificially  prepared wastewater samples.  The accuracy of the proposed kinetic  method was tested by means of 5 replicate analyses of the certified  standard materials, SRM 1640, based on 2 independent methods.

Makale detayları

Kinetic spectrophotometric determination of trace copper(II) ions by their catalytic effect on the reduction of brilliant cresyl blue by ascorbic acid

Yazarlar: Halil İbrahim ULUSOY | Ramazan GÜRKAN | Mehmet AKÇAY

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2011 Vol.35 Issue 4, pp.599-612

Belge Tipi: Makale

Yayın Tarihi: 3/2011

Belge Dili: Türkçe

Document ID (Org No.): 2000727799

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Halil İbrahim ULUSOY | Ramazan GÜRKAN | Mehmet AKÇAY

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2011 Vol.35 Issue 4, pp.599-612

Belge Tipi:

Makale

Yayın Tarihi:

3/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000727799

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527