Magnetic graphene sol-gel hybrid as clean-up adsorbent for acrylamide analysis in food samples prior to GC-MS.

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2018
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Abstract
Graphene (G) modified with magnetite (FeO) and sol-gel hybrid tetraethoxysilane-methyltrimethoxysilane (TEOS-MTMOS) was used as a clean-up adsorbent in magnetic solid phase extraction (MSPE) for direct determination of acrylamide in various food samples prior to gas chromatography-mass spectrometry analysis. Good linearity (R=0.9990) was achieved for all samples using matrix-matched calibration. The limit of detection (LOD=3×SD/m) obtained was 0.061-2.89µgkg for the studied food samples. Native acrylamide was found to be highest in fried potato with bright-fleshed (900.81µgkg) and lowest in toasted bread (5.02µgkg). High acrylamide relative recovery (RR=82.7-105.2%) of acrylamide was obtained for spiked (5 and 50µgkg) food samples. The FeO@G-TEOS-MTMOS is reusable up to 7 times as a clean-up adsorbent with good recovery (>85%). The presence of native acrylamide was confirmed by mass analysis at m/z=71 ([CHNO]) and m/z=55 ([CHO]).
Reference Key
rashidi-nodeh2018magneticfood Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Rashidi Nodeh, Hamid;Wan Ibrahim, Wan Aini;Kamboh, Muhammad Afzal;Sanagi, Mohd Marsin;
Journal Food chemistry
Year 2018
DOI
S0308-8146(17)31076-2
URL
Keywords
gc–ms magnetic solid phase extraction acrylamide food samples clean-up graphene-based sol–gel hybrid adsorbent

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