Author/Authors :
Karimnia, E. Department of Chemistry - Tabriz Branch - Islamic Azad University, Tabriz, Iran , Ghorbani-Kalhor, E. Department of Chemistry - Tabriz Branch - Islamic Azad University, Tabriz, Iran , Farhadi, K. Department of Analytical Chemistry - Faculty of Chemistry - Urmia University, Urmia, Iran , Vardini, M.T. Department of Chemistry - Tabriz Branch - Islamic Azad University, Tabriz, Iran , Molaei, R. Department of Food Hygiene and Quality Control - Faculty of Veterinary Medicine - Urmia University, Urmia, Iran
Abstract :
An efficient method was developed for the synthesis of amino functionalized magnetic metal organic framework composite
(Fe3O4-NH2@MOF-235) and the prepared composite was used as an adsorbent in magnetic solid-phase extraction (MSPE) for the
separation and enrichment of Bisphenol A (BPA) from water samples followed by high performance liquid chromatography analysis. The
prepared framework composite was characterized using transmission electron microscopy, x-ray diffraction, Fourier-transform infrared
spectroscopy, Brunauer-Emmett-Teller and vibrating sample magnetometer techniques. Several parameters affecting the efficiency of
magnetic separation including the amount of absorbent, extraction time, desorption solvent, and desorption volume were optimized. Under
optimum conditions, the response of the method was linear over the concentration range of 0.1-20 ng ml-1 for studied BPA. The limit of
detection of the method was 0.03 ng ml-1 at a signal-to-noise ratio of 3 with an RSD of lower than 6.5%. Finally, the proposed method was
successfully applied for the determination of trace amounts of target analyte in mineral water samples.
Keywords :
Magnetic solid phase extraction , Magnetic metal-organic framework , Bisphenol A , Water samples
