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Reference type: Journal
Authors: Yan HY, Cheng XL, Yang GL
Article Title: Dummy Molecularly Imprinted Solid-Phase Extraction for Selective Determination of Five Phthalate Esters in Plastic Bottled Functional Beverages.
Publication date: 2012
Journal: Journal of Agricultural and Food Chemistry
Volume: 60
Issue: (22)
Page numbers: 5524-5531.
DOI: 10.1021/jf300660m

Abstract: In this paper, a highly selective sample cleanup procedure combing dummy molecular imprinting and solid-phase extraction (DMI-SPE) was developed for the simultaneous isolation and determination of five phthalate esters in plastic bottled beverages. The new imprinted microspheres were synthesized via precipitation polymerization using diisononyl phthalate as a dummy template that showed high selectivity and affinity to the five kinds of phthalate esters and were successfully applied as selective sorbents of DMI-SPE for the simultaneous determination of the phthalate esters from plastic bottled beverages. Good linearity was obtained in a range of 5.0 - 750.0 μg/L, and the average recoveries of the five phthalate esters at three spiked levels ranged from 84.3 to 96.2% with the relative standard deviations less than 5.49%. The developed extraction protocol eliminated the effect of template leakage on quantitative analysis and could be applied for the determination of phthalate esters in complicated functional beverages products.
Template and target information: phthalate esters, diethyl phthalate, DEP, butyl benzyl phthalate, BBP, diisooctyl phthalate, DIOP, dibutyl phthalate, DBP, di-n-octyl phthalate, DNOP, diisononyl phthalate, DINP
Author keywords: dummy imprinted solid-phase extraction, molecularly imprinted microspheres, phthalate esters, gas chromatography, bottled beverages

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