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Reference type: Journal
Authors: Nez L, Turiel E, Martin-Esteban A, Tadeo JL
Article Title: Molecularly imprinted polymer for the extraction of parabens from environmental solid samples prior to their determination by high performance liquid chromatography-ultraviolet detection.
Publication date: 2010
Journal: Talanta
Volume: 80
Issue: (5)
Page numbers: 1782-1788.
DOI: 10.1016/j.talanta.2009.10.023
Alternative URL: http://www.sciencedirect.com/science/article/B6THP-4XG3S7G-6/2/2a074bb0647525b5a5cc7cf1278ca0ef

Abstract: An analytical methodology incorporating a molecularly imprinted solid-phase extraction procedure (MISPE) has been developed for the determination of parabens in environmental solid samples. Four different polymers were prepared combining the use of acetonitrile or toluene as porogen, and 4-vinylpyridine (VP) or methacrylic acid (MAA) as monomer, using benzylparaben (BzP) as a template molecule. Although all the polymers were able to recognize the template in rebinding experiments, the MIP prepared in toluene using MAA showed better performance. This polymer was also capable of recognizing other parabens (methyl, ethyl, isopropyl, propyl, isobutyl, butyl and benzylparaben) allowing to develop an appropriated MISPE procedure for this family of compounds. The extraction of the parabens from environmental solid samples was performed by ultrasonic assisted extraction in small columns (SAESC), and this procedure next to MISPE as clean-up step followed by HPLC-UV determination was successfully used for the determination of parabens in soil and sediment samples of different locations. Recoveries ranging from 80% to 90% have been achieved depending on the compound and the samples, and limits of detection (LODs) were under 1ngg-1 for all the compounds, making this method suitable for the determination of parabens in environmental solid matrices. The method was further applied to the determination of paraben contents in real samples, founding levels up to 11.5ngg-1 in sea sediments
Template and target information: benzylparaben, BzP, methylparaben, ethylparaben, isopropylparaben, propylparaben, isobutylparaben, butylparaben
Author keywords: Environmental solid samples, molecularly imprinted polymer, Parabens, HPCL-UV

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