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Reference type: Journal
Authors: Muhammad T, Yimit O, Turahun Y, Muhammad K, Uludag Y, Zhao ZK
Article Title: On-line determination of 4-nitrophenol by combining molecularly imprinted solid-phase extraction and fiber-optic spectrophotometry.
Publication date: 2014
Journal: Journal of Separation Science
Volume: 37
Issue: (14)
Page numbers: 1873-1879.
DOI: 10.1002/jssc.201400211

Abstract: In the present paper, we describe a new on-line SPE system where molecular imprinting, fiber-optic detection and flow injection analysis were combined for the first time. This new system has been applied for the on line detection of 4-nitrophenol (4-NP). Initially, molecularly imprinted polymers (MIP) have been prepared for the selective extraction of 4-NP using 4-vinylpyridine and ethylene glycol dimethacrylate as functional and cross-linking monomers, respectively. Selective extraction was achieved using the designed MIP with 97% of recovery on imprinted polymer and 10% on control polymer. The system provided a high degree of accuracy, with RSDs varying between 0.7 and 1.39%. In respect of accuracy, reproducibility, and rapidity, this system is comparable with HPLC. In short, the system allows simple, fast, and accurate analyte determination with the possibility of future automation
Template and target information: 4-nitrophenol, 4-NP
Author keywords: Fiber-optic system, Molecularly imprinted polymers, 4-nitrophenol, Solid-phase extraction

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