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Palladium Particles‐Impregnated Natural Phosphate Electrodes for Electrochemical Determination of Mercury in Ambient Water Samples
Author(s) -
El Aroui F.,
Lahrich S.,
Farahi A.,
Achak M.,
El Gaini L.,
Bakasse M.,
Bouzidi A.,
El Mhammedi M. A.
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400126
Subject(s) - anodic stripping voltammetry , detection limit , mercury (programming language) , palladium , tap water , electrochemistry , electrode , stripping (fiber) , chemistry , voltammetry , inorganic chemistry , materials science , nuclear chemistry , analytical chemistry (journal) , chromatography , catalysis , environmental engineering , biochemistry , composite material , computer science , engineering , programming language
We present here a simple procedure for the determination of mercury(II) using differential pulse anodic stripping voltammetry (DPASV) at palladium particles‐impregnated natural phosphate modified carbon paste electrodes (Pd‐NP‐CPE). The surface of modified electrode was characterized using SEM, infrared spectroscopy, X‐ray diffraction and electrochemical analysis. All experimental variables involved in the voltammetric stripping method were optimized. The detection limit was found to be 4.99×10 −8 mol L −1 ( S/N =3) that is not different to the permitted value for Hg(II) in water reported by the Environmental Protection Agency (EPA). The proposed electrode exhibits good applicability for monitoring Hg(II) in tap and wastewater.