Original scientific paper
https://doi.org/10.5599/jese.236
Preparation and characterization of selective electrode for determination of copper ion(II)
Salwa Fares Rassi
; Department of Chemistry, Faculty of Science, Al-Baath University, Homs, Syria
Abstract
A chemically modified carbon paste electrode with diphenyl carbazide the potentio-metric determination of Cu(II) is demonstrated. The electrode exhibits linear response to Cu(II) over a wide concentration range (9.2×10−7 - 5.0×10−1) with Nernstian slope of 30±0.15 mV per decade. It has a response time of about 40 s and can be used for a period of two months with good reproducibility. The detection limit of this electrode was 7.0×10−7 M. The proposed electrode shows a very good selectivity for Cu(II) over a wide variety of metal ions. This chemically modified carbon paste electrode was successfully used for the determination of Cu(II) in various water samples solution and pharma-ceutical formulation.
Keywords
Diphenyl carbazide; Copper; Potentiometric; Method validation
Hrčak ID:
153190
URI
Publication date:
31.12.2015.
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