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首页> 外文期刊>Journal of chromatography, A: Including electrophoresis and other separation methods >Direct determination of fatty acid esters of 3-chloro-1, 2-propanediol in edible vegetable oils by isotope dilution - ultra high performance liquid chromatography - triple quadrupole mass spectrometry
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Direct determination of fatty acid esters of 3-chloro-1, 2-propanediol in edible vegetable oils by isotope dilution - ultra high performance liquid chromatography - triple quadrupole mass spectrometry

机译：同位素稀释-超高效液相色谱-三重四极杆质谱法直接测定食用植物油中3-氯-1,2-丙二醇的脂肪酸酯

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摘要

A selective and sensitive ultra-high performance liquid chromatography - triple quadrupole mass spectrometry (UHPLC-MS/MS) method coupled with matrix solid phase dispersion (MSPD) extraction was developed for the direct determination of fatty acid esters of 3-chloro-1,2-propanediol (3-MCPD esters) in edible vegetable oils. The method integrated the isotope dilution technique, MSPD extraction and UHPLC - MS/MS analysis with multi-reaction monitoring mode (MRM). Matrix-matched calibration curves showed good linearity within the range of 0.01-10 mg L-1 with the correlation coefficient not less than 0.999. Limits of detection (LODs) and limit of quantification (LOQs) of the 3-MCPD esters fell into the range of 0.0001-0.02 mg kg(-1) and 0.0004-0.05 mg kg(-1), respectively. The recoveries for the spiked extra virgin olive oils ranged from 94.4% to 108.3%, with the relative standard deviations (RSD) ranging from 0.6% to 10.5%. The method was applied for the oil sample (T2642) of the official Food Analysis Performance Assessment Scheme (FAPAS) in 2014 and other real samples from supermarket, and the results showed that the present method was comparative to the gas chromatography-mass spectrometry (GC-MS) method based on the improved German Society for Fat Science (DGF) standard method C-III 18 (09) except for palm oil. (C) 2015 Published by Elsevier B.V.
机译：建立了选择性和灵敏的超高效液相色谱-三重四极杆质谱（UHPLC-MS / MS）方法与基质固相分散体（MSPD）萃取相结合的方法，用于直接测定3-氯-1的脂肪酸酯食用植物油中的2-丙二醇（3-MCPD酯）。该方法结合了同位素稀释技术，MSPD提取和具有多反应监测模式（MRM）的UHPLC-MS / MS分析。基质匹配的校准曲线在0.01-10 mg L-1范围内显示出良好的线性，相关系数不小于0.999。 3-MCPD酯的检出限（LOD）和定量限（LOQ）分别在0.0001-0.02 mg kg（-1）和0.0004-0.05 mg kg（-1）范围内。加标的特级初榨橄榄油的回收率为94.4％至108.3％，相对标准偏差（RSD）为0.6％至10.5％。该方法用于2014年官方食品分析性能评估计划（FAPAS）的油样（T2642）和超市的其他实际样品，结果表明该方法与气相色谱-质谱（GC）比较-MS）方法基于改进的德国脂肪科学学会（DGF）标准方法C-III 18（09），但棕榈油除外。 （C）2015由Elsevier B.V.发布

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