Chinese Journal of Chromatography ›› 2019, Vol. 37 ›› Issue (2): 189-193.DOI: 10.3724/SP.J.1123.2018.10038

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Determination of acrylamide in coffee by ultra performance liquid chromatography-atmospheric pressure chemical ionization tandem mass spectrometry

ZHU Mingli1, YANG Lizhong2, ZHANG Weifeng1, CAI Chengyuan2, ZHOU Xiangdong2   

  1. 1. Guangzhou Agricultural Products Quantity and Safety Supervisory Institute, Guangzhou 510308, China;
    2. PerkinElmer Management(Shanghai) Co., Ltd, Shanghai 201203, China
  • Received:2018-10-26 Online:2019-02-09 Published:2014-12-31

Abstract:

A method using ultra high performance liquid chromatography-atmospheric pressure chemical ionization-tandem mass spectrometry (UHPLC-APCI-MS/MS) was developed for the determination of acrylamide in coffee. The coffee samples spiked with 13C3-acrylamide as the internal standard were extracted with methanol, and cleaned using HLB solid phase extraction (SPE) cartridges. The liquid chromatography separation was performed on a Brownlee validated AQ C18 column with isocratic elution. Methanol and 0.1% (volume percentage) formic acid aqueous solution were used as the mobile phase. Identification of acrylamide was achieved by APCI-MS/MS with multiple reaction monitoring (MRM) in the positive mode. The quantification analysis was performed by the internal standard method. The calibration curve showed good linearity with a correlation coefficient of 0.999 in the range of 0.5-100.0 μg/L. The limit of detection (LOD) was 5.0 μg/kg. The limit of quantification (LOQ) was 10.0 μg/kg. Recovery of acrylamide from coffee sample was evaluated at concentrations of 100.0, 200.0 and 1000.0 μg/kg. The average recoveries of acrylamide were between 94.6%-115.0% with relative standard derivations (RSDs) in the range of 2.8%-3.6% (n=6). This simple, accurate and sensitive method was proven to be suitable for the determination of acrylamide in coffee.

Key words: acrylamide, coffee, ultra performance liquid chromatography-atmospheric pressure chemical ionization tandem mass spectrometry (UHPLC-APCI-MS/MS)

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