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Simultaneous Determination of Nickel and Cadmium by Adsorptive Stripping Voltammetry
Author(s) -
Gholivand M. B.,
Bahrami S.,
Abbasi S.,
Sohrabi A.
Publication year - 2008
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.200704183
Subject(s) - hanging mercury drop electrode , cadmium , nickel , chemistry , supporting electrolyte , mercury (programming language) , adsorptive stripping voltammetry , adsorption , cathodic stripping voltammetry , detection limit , voltammetry , analytical chemistry (journal) , inorganic chemistry , electrolyte , electrode , electrochemistry , chromatography , computer science , programming language , organic chemistry
A sensitive and fast method for the simultaneous determination of trace amounts of nickel and cadmium in real samples has been described using differential pulse adsorptive stripping voltammetry (DPASV) by adsorptive accumulation of the N , N ′‐bis(salicylaldehydo)4‐carboxyphenylenediamine (BSCPDA)–complex on the hanging mercury drop electrode (HMDE). As supporting electrolyte 0.02 mol L −1 ammonia buffers containing ligand has been used. Optimal analytical conditions were found to be: BSCPDA concentration of 42 μM, pH 9.6 and adsorption potential at −50 mV versus Ag/AgCl. With an accumulation time of 20 s, the peaks current are proportional to the concentration of nickel and cadmium over the 1–180, and 0.5–200 ng mL −1 with detection limits of 0.06 and 0.03 ng mL −1 respectively. The sensitivity of method for determination of nickel and cadmium were obtained 0.54 and 0.98 nA mL ng −1 , respectively. The procedure was applied to simultaneous determination of nickel and cadmium in some real and synthetic artificial samples with satisfactory results.