Supported liquid membrane-protected molecularly imprinted beads for the solid phase micro-extraction of triazines from environmental waters

Journal of Chromatography. a
E TurielA Martín-Esteban

Abstract

In this work, a novel methodology based on the combination of MIP technology with micro solid-phase extraction in a hollow fibre device for the trace enrichment and cleanup of triazines in environmental waters is described. All parameters affecting both migration of triazines from samples to the lumen of the fibre and rebinding into MIP sites have been carefully optimized. Final conditions included, addition of 20% NaCl to the sample to produce salting-out effect, extraction of analytes during 45min with orbital stirring at 750rpm, and then washing the fibre with toluene during 5min to allow selective recognition of triazines before elution in HPLC inserts containing 450μL of a methanol/acetic acid mixture (95/5, v/v). Under optimum conditions, quantitative recoveries for simazine, cyanazine, atrazine, propazine and terbutylazine, were achieved both in surface, ground and tap water samples, with relative standard deviations lower than 10.6%, and limits of detection in the low ngL(-1) concentration level.

References

Jul 25, 2003·Journal of Chromatography. a·Roger M Smith
Sep 25, 2007·Journal of Chromatography. a·Stig Pedersen-Bjergaard, Knut Einar Rasmussen
May 14, 2011·Analytica Chimica Acta·Francisco BarahonaAntonio Martín-Esteban

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Citations

Mar 23, 2021·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Jie PengLi He
Apr 18, 2021·Analytica Chimica Acta·Francisco Pena-PereiraElefteria Psillakis
Dec 18, 2021·Journal of Separation Science·Guizhen Li, Kyung Ho Row

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