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Reference type: Journal
Authors: Pourfarzib M, Shekarchi M, Rastegar H, Akbari-Adergani B, Mehramizi A, Dinarvand R
Article Title: Molecularly imprinted nanoparticles prepared by miniemulsion polymerization as a sorbent for selective extraction and purification of efavirenz from human serum and urine.
Publication date: 2015
Journal: Journal of Chromatography B
Volume: 974
Page numbers: 1-8.
DOI: 10.1016/j.jchromb.2014.10.012
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1570023214006461

Abstract: A molecularly imprinted polymer (MIP) has been synthesized in order to specifically extract efavirenz from serum and urine by dispersive solid-phase extraction following by HPLC-UV analysis. The imprinted nanoparticles were prepared by miniemulsion polymerization method using efavirenz as template molecule and methacrylic acid as functional monomer. Molecular recognition properties, binding capacity and selectivity of the MIPs were evaluated and the results revealed that the obtained MIPs had high specific retention for efavirenz in aqueous medium. The MIP was used as a molecular sorbent for the separation of efavirenz from human serum and urine. The extraction of efavirenz by MIP coupled with HPLC analysis showed a linear calibration curve in the range of 50-300 μg/L with exellent precisions (3.66% and 4.6% for 100 and 300 μg/L respectively). The limit of detection (LOD) and limit of quantification (LOQ) were determind in serum (17.3 and 57.5 μg/L) and urine (10.6 and 36.2 μg/L). The maximum recoveries for serum and urine samples were found to be 95.2% and 92.7% respectively. Due to the high precision and accuracy, this method may be the UV-HPLC choice with MIP extraction for bioequivalence analysis of efavirenz in serum and urine
Template and target information: efavirenz
Author keywords: molecularly imprinted polymer, nanoparticles, Efavirenz, human serum, urine


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