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Reference type: Journal
Authors: Song XL, Wang AX, Liu XH, Huang Y, Shi LL
Article Title: Preparation of analog-molecularly imprinted microspheres and their adsorbent performance for microcystin in aqueous solution.
Publication date: 2016
Journal: Environmental Chemistry
Volume: 35
Issue: (3)
Page numbers: 451-459.

Abstract: Molecularly imprinted polymers for microcystins were synthesized by precipitation polymerization method using L-arginine as the template,acrylamide( AM) as monomer,N,N'-Methylenebisacrylamide as crosslinker and azodiisobutyronitrile as initiator. The imprinting ratio of L-arginine and acrylamide( AM) was calculated based on the Density Functional Theory( DFT)method,and the resulting composites were characterized by scanning electron microscopy( SEM)and Fourier transform infrared( FT-IR) analysis. The selectivity of the MIPs for the adsorption of microcystin-LR was demonstrated by equilibrium adsorption experiments. Results showed that the adsorption isotherms of analog-molecularly imprinted microspheres to MC-LR can be described by the Langmuir adsorption model,and the linear regression equation was fitted as Ce/ Q = 3. 026 x 10-4 + 0.125( r = 0.991),and the apparent maximum adsorption capacity for MC-LR was 80.3 μg g-1. It was proved that the MIPs had better molecular fragment recognition ability for MC-LR and MC-RR than for of NIPs. The imprinted microspheres showed rapid adsorption dynamic process because theinitial adsorption rate of MIPs and NIPs to MC-LR were 58.8,19.6 μg g-1 min-1,respectively. This polymers can be used for selective extraction of [arginine]-microcystins in water using solid phase extraction method in future.
Template and target information: L-arginine, analogue-template, microcystin-LR
Author keywords: Molecularly imprinted polymer microspheres, high performance liquid chromatography, microcystins(MCs), L-arginine


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