Multiwall carbon nanotube- zirconium oxide nanocomposite hollow fiber solid phase microextraction for determination of polyaromatic hydrocarbons in water, coffee and tea samples.

Title Multiwall carbon nanotube- zirconium oxide nanocomposite hollow fiber solid phase microextraction for determination of polyaromatic hydrocarbons in water, coffee and tea samples.
Authors M.Nozohour Yazdi; Y. Yamini; H. Asiabi
Journal J Chromatogr A
DOI 10.1016/j.chroma.2018.04.040
Abstract

The purpose of this study was to evaluate the application of hollow fiber solid-phase microextraction (HF-SPME) followed by HPLC-UV to determine the ultra-trace amounts of polycyclic aromatic hydrocarbons (PAHs) as model analytes in complex coffee and tea samples. HF-SPME can be effectively used as an alternative to the direct immersion SPME (DI-SPME) method in complex matrices. The DI-SPME method suffers from serious limitation in dirty and complicated matrices with low sample clean-up, while the HF-SPME method has high clean-up and selectivity due to the high porosity of hollow fiber that can pick out analyte from complicated matrices. As a hollow fiber sorbent, a novel multiwall carbon nanotube/zirconium oxide nanocomposite (MWCNT/ZrO) was fabricated. The excellent adsorption of PAHs on the sorbent was attributed to the dominant roles of ?-? stacking interaction and hydrophobic interaction. Under the optimized extraction conditions, the wide linear range of 0.1-200??g?L with coefficients of determination better than 0.998 and low detection limits of 0.033-0.16??g?L with satisfactory precision (RSD?

Citation M.Nozohour Yazdi; Y. Yamini; H. Asiabi.Multiwall carbon nanotube- zirconium oxide nanocomposite hollow fiber solid phase microextraction for determination of polyaromatic hydrocarbons in water, coffee and tea samples.. J Chromatogr A. 2018;1554:815. doi:10.1016/j.chroma.2018.04.040

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