Jump to main content
Jump to site search


An efficient design for in-situ determination of amlodipine in whole blood samples using fast Fourier transform stripping square wave voltammetry after preconcentration by electromembrane extraction

Abstract

In this work, amlodipine (AML) was determined in whole blood samples based on coupling of fast Fourier transform stripping square wave voltammetry (FFTSWV) and electromembrane extraction (EME). The supported liquid membrane (SLM) was involved of 50 µL 2-Nitrophenyl octyl ether (NPOE) soaked into the pores of a hollow fiber. In order to electrochemically determine the amount of analyte, three microelectrodes were placed into a pipette tip and inserted in the upper end of a hollow fiber. The basic factors affecting the extraction recovery such as extraction time, electrical potential and pH of donor phases, was optimized using central composite design and response surface methodology. By applying a 250 V d.c. potential for 21 minutes, the charged target analytes were extracted from the phosphate buffer pH 5.5, through the porous of the SLM and then into the lumen of the hollow fiber (phosphate buffer pH 4). The calibration curve was assesed under the optimized conditions and the method displayed two wide linear ranges 0.1-10 and 10-1000 ng/mL with determination coefficients of 0.99and 0.98, respectively, in whole blood samples. Preconcentration factor of 61was acquired after the micro-extraction process. The intra- and inter-day precisions was calculated and (RSD%, n = 3) were 4.5% and 7.5%, respectively. Limits of detection and quantification were found to be 0.05 ng/mL and 0.1 ng/mL, respectively.

Back to tab navigation

Publication details

The article was received on 07 Jun 2017, accepted on 29 Aug 2017 and first published on 06 Sep 2017


Article type: Paper
DOI: 10.1039/C7NJ01932G
Citation: New J. Chem., 2017, Accepted Manuscript
  •   Request permissions

    An efficient design for in-situ determination of amlodipine in whole blood samples using fast Fourier transform stripping square wave voltammetry after preconcentration by electromembrane extraction

    Z. Mofidi, P. Norouzi, S. Seidi and M. R. Ganjali, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ01932G

Search articles by author

Spotlight

Advertisements