A Sensitive Catalytic Method for the Determination of Copper by its Catalytic Effect on the Potassium Bromate Indigo Carmine Reaction

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Journal Title, Volume, Page: 
Instrumentation Science & Technology Volume 22, Issue 4
Year of Publication: 
1994
Authors: 
B. F. Shraydeha
Department of Chemistry, Faculty of Science An-Najah National University, Nablus, Palestine
Current Affiliation: 
Department of Chemistry, An-Najah National University, Nablus, Palestine
M. A. Abu Eida
Department of Chemistry, Faculty of Science An-Najah National University, Nablus, Palestine
N. A. Zatara
Department of Chemistry, Faculty of Science An-Najah National University, Nablus, Palestine
A. Abu Obeida
Department of Chemistry, Faculty of Science An-Najah National University, Nablus, Palestine
M. Khamisb
Al-Quds University College of Science and Technology , Abu Deis, Jerusalem
K. Kananb
Al-Quds University College of Science and Technology , Abu Deis, Jerusalem
Preferred Abstract (Original): 

A method for catalytic determination of copper (II) is presented. The method is based on the catalytic effect of copper(II) on the rate of oxidation of indigo carmine by potassium bromate. The method is satisfactory for the determination of copper(II) in the range 1.2 to 38 ng/mL. Effect of acidity, indigo carmine, potassium bromate, temperature and tolerance limits of foreign ions are reported. The method was applied to the determination of copper in synthetic and in various milk samples.