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Anodic Stripping Voltammetric Determination of Iron(II) at a Carbon Paste Electrode Modified with Dithiodianiline (DTDA) and Gold Nanoparticles (GNP)
Author(s) -
Gholivand Mohammad Bagher,
Geravandi Behrooz,
Parvin Mohammad Hadi
Publication year - 2011
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.201000715
Subject(s) - detection limit , anodic stripping voltammetry , stripping (fiber) , carbon paste electrode , electrode , analytical chemistry (journal) , anode , carbon fibers , colloidal gold , chemistry , trace amounts , relative standard deviation , materials science , ion , nanoparticle , inorganic chemistry , nuclear chemistry , electrochemistry , cyclic voltammetry , chromatography , nanotechnology , composite material , composite number , medicine , alternative medicine , organic chemistry , pathology
A differential pulse anodic stripping voltammetric procedure was developed for the determination of trace amounts of iron(II) in the presence of iron(III) at a carbon paste electrode (CPE) modified with dithiodianiline and gold nanoparticle. At the pH working of 3.0, a wide concentration range from 0.1 nM to 100 nM was observed with the detection limit of 0.05 nM. The relative standard deviation for a solution containing 50 nM of iron(II) was found to be 3.11 % ( n =9). Possible interferences from the coexisting ions were also investigated. The validity of the method and applicability of the sensor were successfully tested by determining of iron(II) in lentil, wheat seed and barley seed samples.