机构地区: 中国广州分析测试中心
出 处: 《分析测试学报》 1999年第5期64-65,共2页
摘 要: 利用气相色谱 -质谱联用离子选择检测法 (GC -MS-SIM)测定酱油中3 -氯 -1,2 -丙二醇(3_CPD),样品用苯硼酸衍生化处理 ,正己烷抽提 ,用HP-112m×0.2mm毛细管色谱柱分离 ,选择基峰离子m/z147进行测定 ,检出限0.001×10-6。该法操作简单 ,快捷 ,灵敏度高。 An improved method for determination of 3 _chloropropane _ 1,2 _ diol in soy sauce by capillary gas chromatography -mass spectrometry is presented. The sample was derivatized with phenylboronic acid,and then extracted by hexane. The ion m/z 147 of base peak in the mass spectrum was used for detection in GC-MS-SIM. The detection limit of the method is 0.01×10-6. This method is simple, rapid and sensitive.