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Rahman Hosseinzadeh

Rahman Hosseinzadeh

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Faculty of Chemistry
Address: Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran
Phone: 01135302356

Research

Title
Selective and sensitive voltammetric sensor based on modified multiwall carbon nanotubes paste electrode for simultaneous determination of l-cysteine and folic acid
Type
JournalPaper
Keywords
L-Cysteine . Folic acid . Carbon nanotubes paste electrode . Voltammetry
Year
2013
Journal Ionics
DOI
Researchers sohrab Kazemi ، Hassan Karimi-Maleh ، Rahman Hosseinzadeh ، Fahim Faraji

Abstract

This paper reports the selective and sensitive voltammetric determination of L-cysteine in the presence of folic acid using ethynylferrocene modified carbon nanotubes paste electrode in 0.1 M phosphate buffer solution (pH 7.0). Using square wave voltammetry, we could measure L-cysteine and folic acid in one mixture independently from each other by a potential difference of about 410 mV for the first time. Square wave voltammetric peak current of L-cysteine and folic acid increased linearly with their concentrations in the ranges of 0.2–250.0 and 1.0–500.0 μmolL−1, respectively. The detection limits of 0.07 and 0.6 μmolL−1 were achieved for Lcysteine and folic acid, respectively. The proposed voltammetric sensor was successfully applied to the determination of L-cysteine and folic acid in real samples.