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author:

Zhang, Zhuomin (Zhang, Zhuomin.) [1] | Ma, Yunjian (Ma, Yunjian.) [2] | Wang, Qingtang (Wang, Qingtang.) [3] | Chen, An (Chen, An.) [4] | Pan, Zhuoyan (Pan, Zhuoyan.) [5] | Li, Gongke (Li, Gongke.) [6]

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Abstract:

A novel alumina nanowire (ANW) solid-phase microextraction (SPME) fiber coating was prepared by a simple and rapid anodization-chemical etching method for ultra-selective determination of volatile esters and alcohols from complicated food samples. Preparation conditions for ANW SPME fiber coating including corrosion solution concentration and corrosion time were optimized in detail for better surface morphology and higher surface area based on scanning electron microscope (SEM). Under the optimum conditions, homogeneous alumina nanowire structure of ANW SPME fiber coating was achieved with the average thickness of 20. μm around. Compared with most of commercial SPME fiber coatings, ANW SPME fiber coatings achieved the higher extraction capacity and special selectivity for volatile esters and alcohols. Finally, an efficient gas sampling technique based on ANW SPME fiber coating as the core was established and successfully applied for the ultra-selective determination of trace volatile esters and alcohols from complicated banana and fermented glutinous rice samples coupled with gas chromatography/mass spectrometry (GC/MS) detection. It was interesting that 25 esters and 2 alcohols among 30 banana volatile organic compounds (VOCs) identified and 4 esters and 7 alcohols among 13 identified VOCs of fermented glutinous rice were selectively sampled by ANW SPME fiber coatings. Furthermore, new analytical methods for the determination of some typical volatile esters and alcohols from banana and fermented glutinous rice samples at specific storage or brewing phases were developed and validated. Good recoveries for banana and fermented glutinous rice samples were achieved in range of 108-115% with relative standard deviations (RSDs) of 2.6-6.7% and 80.0-91.8% with RSDs of 0.3-1.3% (n=3), respectively. This work proposed a novel and efficient gas sampling technique of ANW SPME which was quite suitable for ultra-selectively sampling trace volatile esters and alcohols from complicated food samples. © 2013 Elsevier B.V.

Keyword:

Alcohols Alumina Aluminum oxide Coatings Corrosion Esters Etching Extraction Fibers Food products Fruits Gas chromatography Morphology Nanowires Scanning electron microscopy Surface morphology Volatile organic compounds

Community:

  • [ 1 ] [Zhang, Zhuomin]School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • [ 2 ] [Ma, Yunjian]School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • [ 3 ] [Wang, Qingtang]Key Laboratory of Analysis and Detection for Food Safety of Ministry of Education, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 4 ] [Chen, An]School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • [ 5 ] [Pan, Zhuoyan]School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China
  • [ 6 ] [Li, Gongke]School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China

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Source :

Journal of Chromatography A

ISSN: 0021-9673

Year: 2013

Volume: 1290

Page: 27-35

4 . 2 5 8

JCR@2013

3 . 8 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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