摘要
采用同位素内标气相色谱-质谱(GC-MS)联用法,快速测定调味品中3-氯-1,2-丙二醇(3-MCPD)的含量。试样中加入3-MCPD的氘代同位素作为内标,过柱,用正己烷淋洗,乙酸乙酯洗脱,经氮吹浓缩后采用七氟丁酰咪唑(HFBI)进行衍生化,采用GC-MS选择离子监测(SIM)模式进行定性定量分析。结果表明,本方法的添加回收率≥80%;相对标准偏差≤7%;检出限达到5.0μg/kg。本方法步骤简便,溶剂用量少,定性定量准确可靠。
Isotope internal standard gas chromatography - mass spectrometry （GC-MS） associated usage, rapid determination of condiments 3 - chloro - 1,2 - propandiol （3-MCPD） content. Sample was added 3-MCPD in deuterated internal standard, through the column, elution with hexane, ethyl acetate, and concentrated using nitrogen blowing alter heptafluorobutoxy acyl imidazole （HFBI） derivatized, using GC-MS in selected ion monitoring （SIM） mode for qualitative and quantitative analysis. The results show that this method recoveries /〉80 %; relative standard deviation 47 %; detection limit of 5.0μg/kg. The method steps is simple, less solvent, qualitative and quantitative accurate and reliable.
出处
《广东化工》
CAS
2014年第8期138-139,共2页
Guangdong Chemical Industry
