Effect of Pulse Width of Square Potential to Remove Silver Interference in the Determination of Mercury(II) |
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| Authors: | A Farahi M Achak L El?Gaini S El?Yamani M Bakasse M A El?Mhammedi |
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| Institution: | 1. Univ Hassan 1, Laboratoire de Chimie et Modélisation Mathématique, 25?000 Khouribga, Morocco tel: +212?68858296;2. fax: +212?23485201;3. Univ Chouaib Doukkali, Equipe d'Analyse des Micropolluants Organiques, Faculté de Sciences, Morocco;4. Univ Chouaib Doukkali, Ecole Nationale des Sciences Appliquées, El Jadida, Morocco |
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| Abstract: | A graphite electrode modified with silver (Ag‐CPE) has been applied to detect mercury(II) using differential pulse voltammetry (DPV). Under optimized conditions, the calibration curve is linear in the range from 5.0×10?8 mol L?1 to 1.0×10?4 mol L?1 of mercury(II). The detection limit was found to be 3.38×10?8 mol L?1 with a relative standard deviation (RSD) of 2.25 % (n=8). The proposed method was successfully applied for the detection of mercury(II) in leachate samples. The Ag‐CP composites were characterized using X‐ray diffraction (XRD), BET adsorption analysis and scanning electron microscopy (SEM). |
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| Keywords: | Silver Differential pulse voltammetry Mercury Leachate |
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