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Reference type: Journal
Authors: Duan HM, Li XJ, Li LL, Wang XJ, Feng JJ, Sun M, Luo CN
Article Title: A novel chemiluminescence sensor for determination of vanillin with magnetite-graphene oxide molecularly imprinted polymers.
Publication date: 2014
Journal: Analytical Methods
Volume: 6
Issue: (21)
Page numbers: 8706-8712.
DOI: 10.1039/C4AY01275E

Abstract: A novel chemiluminescence (CL) sensor for the on-site determination of vanillin using the system of luminol-KMnO4-NaOH based on a magnetic graphene oxide molecularly imprinted polymer (GM-MIP) is described. The vanillin-GM-MIP system, which has the merits of easy separation, high selectivity and a large amount of adsorption, was synthesized as a vanillin recognition material in the CL analysis, where the GM-MIP column was placed ahead of the pump in the experimental setup so as to increase the selectivity of CL analysis. The GM-MIP was characterized by SEM, XRD, TEM and FTIR, and also for its adsorption ability, selectivity and reusability. The GM-MIP-CL sensor responded linearly to the concentration of vanillin over the range 3.3 x 10-7 to 1.2 x 10-5 mol L-1 with a detection limit of 1.1 x 10-7 mol L-1 (3δ ). The RSD was 3.9%, and on the basis of speediness and high selectivity the sensor showed a great improvement in selectivity and adsorption capacity. Finally, the sensor was applied to the determination of vanillin in practical samples, and the recoveries were between 6% and 8%. The sensor was an easily producible, simple automatic column packing with high selectivity
Template and target information: vanillin


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