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Issue 3, 2018
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Layer-by-layer fabrication of g-C3N4 coating for headspace solid-phase microextraction of food additives followed by gas chromatography-flame ionization detection

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Abstract

This work demonstrates a simple layer-by-layer approach for producing graphitic carbon nitride (g-C3N4) coated fibers for solid-phase microextraction (SPME) with sol-SiO2 as the binder. With the prepared g-C3N4 coated SPME fiber, a headspace SPME coupled with GC (HS-SPME-GC) method was developed for the analysis of food additives. Detection limits of 0.2–4.0 ng mL−1 were obtained for the analysis of five food additives including methyl cinnamate, ethyl cinnamate, benzyl cinnamate, isobutyl cinnamate, and butylated hydroxytoluene by the developed HS-SPME-GC method with flame ionization detection. The method exhibited good linearity in the range of 0.5–1000.0 ng mL−1 with the coefficient of determination (R2) not lower than 0.9930. The repeatability of the prepared coating was 2.2–5.4% (n = 3) for the same fiber, and the reproducibility was in the range of 5.3–12.4% for three different fibers. The recovery of the developed method was in the range of 73.3–109.8%. Based on the as-prepared g-C3N4 coating, the developed HS-SPME-GC method was successfully applied to the analysis of real samples including biscuits and milk tea beverages.

Graphical abstract: Layer-by-layer fabrication of g-C3N4 coating for headspace solid-phase microextraction of food additives followed by gas chromatography-flame ionization detection

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Publication details

The article was received on 26 Oct 2017, accepted on 10 Dec 2017 and first published on 11 Dec 2017


Article type: Paper
DOI: 10.1039/C7AY02515G
Citation: Anal. Methods, 2018,10, 322-329
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    Layer-by-layer fabrication of g-C3N4 coating for headspace solid-phase microextraction of food additives followed by gas chromatography-flame ionization detection

    Y. Yang, P. Qin, X. Zhang, J. Niu, S. Tian, M. Lu, J. Zhu and Z. Cai, Anal. Methods, 2018, 10, 322
    DOI: 10.1039/C7AY02515G

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