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

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Mon, 2014-04-14 13:36 — Ahmad A. Abu-Obaid
Journal Title, Volume, Page: 
Instrumentation Science & Technology Volume 22, Issue 4
Year of Publication: 
1994
Link: 
http://www.tandfonline.com/doi/abs/10.1080/10739149408001194
Authors: 
A. Abu Obeid
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Current Affiliation: 
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
[email protected]
M. A. Abu Eid
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
N. A. Zatar
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
B. F. Shraydeh
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
M. Khamis
Al-Quds University College of Science and Technology , Abu Deis, Jerusalem
K. Kanan
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.