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Reference type: Journal
Authors: Zhu HP, Ma LG, Fang GZ, Pan MF, Lu JP, Wang XN, Wang S
Article Title: Preparation of a molecularly imprinted polymer using TMB as a dummy template and its application as SPE sorbent for determination of six PBBs in water and fish samples.
Publication date: 2011
Journal: Analytical Methods
Volume: 3
Issue: (2)
Page numbers: 393-399.
DOI: 10.1039/C0AY00479K

Abstract: A novel molecularly imprinted polymer (MIP) based on a silica-gel surface for the separation and concentration of polybrominated biphenyls (PBBs) was prepared using 3,3',5,5'-tetramethylbenzidine (TMB) as a dummy template by a surface molecular imprinting technique in combination with a sol-gel process. The results obtained from a series of adsorption experiments proved that the prepared sorbent had a good adsorption capacity and a fast mass transfer rate to TMB. Meanwhile, a method was developed for the determination of six PBBs using TMB-MIP as a solid-phase extraction (SPE) enrichment sorbent coupled to GC-ECD. Under the optimum experimental conditions, the linear range of the calibration curve was 0.01-5.0 μg L-1 (r2 > 0.99), and LODs for each analyte were between 2.0 ng L-1 and 8.0 ng L-1. Relative standard deviations (RSD) for nine replicate detections of 1.0 μg L-1 of each analyte ranged from 4.30% to 7.89%. The proposed method was applied to the determination of six PBBs in spiked water and fish samples with recoveries ranging from 61.48% to 114.06%
Template and target information: polybrominated biphenyls, PBBs, 3,3',5,5'-tetramethylbenzidine, TMB, dummy template

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