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  • Title: [Determination of 3-monochloropropane-1,2-diol in grease food by solid phase extraction-derivatization-gas chromatography-mass spectrometry].
    Author: Xiang X, Wang L, Shen X, Li C, Shen J, Wu P.
    Journal: Wei Sheng Yan Jiu; 2017 Sep; 46(5):777-782. PubMed ID: 29903307.
    Abstract:
    OBJECTIVE: To establish the method of determination of 3-monochloropropane-1,2-diol( 3-MCPD) in grease food by gas chromatography-mass spectrometry( GC-MS). METHODS: 3-MCPD in grease food represented by bean paste was extracted by ultrasound,purified by alkaline earth solid phase extraction column,derivatived using phenylboronic acid( PBA) and detected by GC-MS. RESULTS: The linearity of 3-MCPD ranged from 1-100 ng/mL,with correlation coefficient at 0. 9993.The limits of quantitation( LOQ) in soy sauce,bean paste,pepper oil were 0. 6,0. 5 and7. 0 μg/kg and limits of detection( LOD) were 1. 9,1. 6 and 18. 8 μg/kg,respectively.Average recovery rate and relative standard deviation was 78. 3%-106. 7% and 1. 9%-11. 6%( n = 6), when 3-MCPD was added in grease food at 2. 5-1000 μg/kg. CONCLUSION: The method has good purification effect and the detection sensitivity and accuracy,and can be used for the determination of 3-MCPD in grease food.
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