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Reference type: Journal
Authors: He JA, Lv RH, Zhan HJ, Wang HZ, Cheng J, Lu K, Wang FC
Article Title: Preparation and evaluation of molecularly imprinted solid-phase micro-extraction fibers for selective extraction of phthalates in an aqueous sample.
Publication date: 2010
Journal: Analytica Chimica Acta
Volume: 674
Issue: (1)
Page numbers: 53-58.
DOI: 10.1016/j.aca.2010.06.018
Alternative URL: http://www.sciencedirect.com/science/article/B6TF4-50CV81P-2/2/f7d22c01dc190e871eb3ffa12fed6af2

Abstract: A novel molecularly imprinted polymer (MIP) that was applied to a solid-phase micro-extraction (SPME) device, which could be coupled directly to gas chromatograph and mass spectrometer (GC/MS), was prepared using dibutyl phthalate (DBP) as the template molecule. The characteristics and application of this fiber were investigated. Electron microscope images indicated that the MIP-coated solid-phase micro-extraction (MI-SPME) fibers were homogeneous and porous. The extraction yield of DBP with the MI-SPME fibers was higher than that of the non-imprinted polymer (NIP)-coated SPME (NI-SPME) fibers. The MI-SPME fibers had a higher selectivity to other phthalates that had similar structures as DBP. A method was developed for the determination of phthalates using MI-SPME fibers coupled with GC/MS. The extraction conditions were optimized. Detection limits for the phthalate samples were within the range of 2.17-20.84 ng L-1. The method was applied to five kinds of phthalates dissolved in spiked aqueous samples and resulted in recoveries of up to 94.54-105.34%, respectively. Thus, the MI-SPME fibers are suitable for the extraction of trace phthalates in complicated samples
Template and target information: dibutyl phthalate, DBP, dimethyl phthalate, DMP, diethylphthalate, DEP, dipropyl phthalate, diamyl phthalate, DAP, di-n-octyl phthalate, DNOP
Author keywords: molecularly imprinted polymer, Solid-phase micro-extraction, fiber, Dibutyl phthalate


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