Magnetic graphene sol-gel hybrid as clean-up adsorbent for acrylamide analysis in food samples prior to GC-MS.
Clicks: 222
ID: 96948
2018
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]).
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| 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 |
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