Dummy Molecularly Imprinted Solid-Phase Extraction for Selective Determination of Five Phthalate Esters in Plastic Bottled Functional Beverages

作者：Yan Hongyuan^*; Cheng Gaoling; Yang Gengliang

来源：Journal of Agricultural and Food Chemistry, 2012, 60(22): 5524-5531.

DOI：10.1021/jf300660m

• dummy imprinted solid-phase extraction
• molecularly imprinted microspheres
• phthalate esters
• gas chromatography
• bottled beverages

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 mu g/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.

• 出版日期2012-6-6
• 单位河北大学