Original scientific paper

https://doi.org/10.5562/cca2659

Direct Potentiometric Determination of Penicillamine in Real Samples by Using Copper ISE

Tina Vukušić orcid.org/0000-0002-2069-9088 ; Department of Analytical Chemistry, Faculty of Chemistry and Technology, Teslina 10/V, 21000 Split, Croatia
Ante Prkić orcid.org/0000-0002-7903-0354 ; Department of Analytical Chemistry, Faculty of Chemistry and Technology, Teslina 10/V, 21000 Split, Croatia
Josipa Giljanović ; Department of Analytical Chemistry, Faculty of Chemistry and Technology, Teslina 10/V, 21000 Split, Croatia
Vesna Sokol ; Department of Physical Chemistry, Faculty of Chemistry and Technology, Teslina 10/V, 21000 Split, Croatia
Perica Bošković ; Department of Physical Chemistry, Faculty of Chemistry and Technology, Teslina 10/V, 21000 Split, Croatia

Abstract

Direct potentiometric method for determination of penicillamine in pharmaceuticals by using commercial copper ISE is described. Proposed method is very inexpensive, simple and reasonably fast method for determination of Pen in acetic buffer, pH = 4 without pretreatment of pharmaceuticals. Determination is based on the reaction between Pen and Cu2+ from electrode membrane. Described method has linear response range for Pen from 2×10−6 to 1×10−2 mol L−1 with limit of detection of 1.1×10−6 mol L−1. Found concentrations of Pen are in very good agreement with declared ones with standard deviation values in range 4.00−4.50 %.

Keywords

penicillamine; potentiometric; determination; ion-selective electrode

Hrčak ID:

150530

URI

https://hrcak.srce.hr/150530

Publication date:

30.12.2015.

Visits: 1.689 *