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강영운,안지은,서정혁,박선희,윤혜정 한국식품위생안전성학회 2014 한국식품위생안전성학회지 Vol.29 No.4
The present study demonstrated the development and validation of the method for the quantificationof phenol in food using gas chromatography coupled with mass spectrometry (GC-MS). After spiking of interanlstandard (Phenol-d5) to food, those samples were extracted with organic solvent mixture (acetone : dichloromethane= 1 : 1, v/v) using ultra sonic extractor and cleaned by gel permeation chromatography (GPC) technique. The amountof phenol was determined by GC/MS. To validate the developed method, we evaluated parameters were the selectivity,linearity, accuracy, precision, and recovery. To demonstrate the selectivity of the method, blank samples of rice,corn, and fish(mackerel) were prepared and subjected to GC-MS analysis. To verify the linearity of the method, sixdifferent standard concentrations of phenol at 0.01, 0.05, 0.1, 0.5, 1 and 2.5 mg/kg were evaluated. The correlationcoefficient (r2) of calibration curve was 0.9999. The recovery rate for phenol standard calculated by internal standardmethod were 82.2~101.5% for samples fortified with 0.25, 0.50, and 1.0 mg/kg, respectively. Also the repeatabilityand reproducibility for validation of precision were 0.2~5.5%. According to the result of the validation, this establishedmethod was suitable for AOAC guideline. The limit of detection (LOD) for phenol analysis were 0.03~0.1 mg/kg, and the limit of quantification (LOQ) were 0.1~0.3 mg/kg. Therefore, we established the optimal analysis methodfor determination of phenol in food using GPC and GC/MS.
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