摘要
改进检测白酒中氨基甲酸乙酯含量的气相色谱-质谱法(GC-MS)。样品经二氯甲烷提取,用旋转蒸发仪浓缩至近干,乙腈溶解,正已烷去除杂质,然后用气相色谱-质谱联用法检测。氨基甲酸乙酯标准浓度在0.1～1 mg/L范围内,线性关系良好,相关系数r达0.999。添加浓度为0.01～0.1 mg/kg时,回收率为77.7%～95.2%,相对标准偏差(RSD)在4.0%～6.3%之间,定量检出限低于0.01 mg/kg。改良后的GC-MS法操作简单快速、经济节约、灵敏度高。
In this study, we intended to improve a method for the detection of Ethyl Carbamate by gas ehromatogram-mass speetrometry（ GC-MS ） in Liquor.Ethyl earbamate in liquor was extraeted by diehloromethane, and the extraet waseoneentrated by a rotary evaporator.Then the extraet was purified by using hexane, and deteeted by GC-MS.There was a goodlinearity within the range of 0.1-1.0 mg/L with the eorrelation eoeffieient of 0.999.The reeoveries were between 77.7%-95.2%at the spiking level of 0.01-0.mg/kg.The deteetion limit reaehed 0.01mg/kg.The improved method for the deteetion of EthylCarbamate by GC-MS in Liquor in this study is aeeurate and eeonomieal.
作者
周韵
寸宇智
李长寿
李颖
杨卫花
Zhou Yun;Cun Yuzhi;Li Changshou;Li Ying;Yang Weihua(College of Agriculture and Bioseienee,Dali University,Dali 671003,China;Dali Quality and Technical Supervision Comprehensive InspeefionCenter,Dali 671000,China)
出处
《云南化工》
CAS
2018年第8期68-70,共3页
Yunnan Chemical Technology
作者简介
周韵（1991-），男，云南昭通人，大理大学2012级生物科学专业学生。;通讯作者：寸宇智，大理大学农学与生物科学学院。
