کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
187613 459646 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Highly sensitive simultaneous electrochemical determination of trace amounts of Pb(II) and Cd(II) using a carbon paste electrode modified with multi-walled carbon nanotubes and a newly synthesized Schiff base
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Highly sensitive simultaneous electrochemical determination of trace amounts of Pb(II) and Cd(II) using a carbon paste electrode modified with multi-walled carbon nanotubes and a newly synthesized Schiff base
چکیده انگلیسی

A new chemically modified electrode was constructed for rapid, simple, accurate, selective and highly sensitive simultaneous determination of lead and cadmium using square wave anodic stripping voltammetry (SWASV). The electrode was prepared by incorporation of new synthesized Schiff base and multi-walled carbon nanotubes (MWCNT) in carbon paste electrode. The limit of detection was found to be 0.25 ng mL−1 and 0.74 ng mL−1 for Pb2+ and Cd2+, respectively. The stability constants of the complexes of the ligand with several metal cations in ethanol medium were determined. The effects of different cations and anions on the simultaneous determination of metal ions were studied and it was found that the electrode is highly selective. The proposed chemically modified electrode was used for the determination of lead and cadmium in several foodstuffs and water samples.


► A new chemically modified carbon paste electrode was constructed and used.
► A new Schiff base and multi-walled carbon nanotube was used as modifiers.
► The electrochemical properties of the modified electrode were studied.
► The electrode was used to the simultaneous determination of Pb2+ and Cd2+.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 89, 1 February 2013, Pages 377–386
نویسندگان
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