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Sol-gel hybrid methyltrimethoxysilane-tetraethoxysilane as a new dispersive solid-phase extraction material for acrylamide determination in food with direct gas chromatography-mass spectrometry analysis

Wan Ibrahim, Wan Aini and Ali Omar, Mei Musa and Elbashir, Abdalla A. (2014) Sol-gel hybrid methyltrimethoxysilane-tetraethoxysilane as a new dispersive solid-phase extraction material for acrylamide determination in food with direct gas chromatography-mass spectrometry analysis. Food Chemistry, 158 . pp. 302-309. ISSN 1873-7072

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Official URL: http://dx.doi.org/10.1016/j.foodchem.2014.02.045

Abstract

A sol-gel hybrid sorbent, methyltrimethoxysilane-tetraethoxysilane (MTMOS-TEOS) was successfully used as new dispersive solid phase extraction (dSPE) sorbent material in the determination of acrylamide in several Sudanese foods and analysis using GC-MS. Several important dSPE parameters were optimised. Under the optimised conditions, excellent linearity (r2 > 0.9998) was achieved using matrix matched standard calibration in the concentration range 50-1000 μg kg-1. The limits of detection (LOD) and limit of quantification ranged from 9.1 to 12.8 μg/kg and 27.8-38.9 μg/kg, respectively. The precision (RSD%) of the method was ≤6.6% and recoveries of acrylamide obtained were in the range of 88-103%, (n = 3). The LOD obtained is comparable with the LODs of primary secondary amine dSPE. The proposed MTMOS-TEOS dSPE method is direct and safe for acrylamide analysis, showed reliable method validation performances and good cleanup effects. It was successfully applied to the analysis of acrylamide in real food samples.

Item Type:Article
Uncontrolled Keywords:acrylamide, sample preparation
Subjects:Q Science
Divisions:Science
ID Code:62617
Deposited By: Widya Wahid
Deposited On:19 Jun 2017 11:00
Last Modified:19 Jun 2017 11:00

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