摘要
微波萃取牙膏样品中的二甘醇,用气相色谱-质谱(GC/MS)联用法测定其含量,建立了一个测定牙膏中二甘醇含量的快速、准确方法,并对二甘醇的微波萃取条件进行了优化。优化后的分析条件为,萃取时间20min,萃取溶剂乙醇,萃取温度120oC。方法的检出限0.4mg/L,线性范围1mg/L^500mg/L,相关系数为0.9992,相对标准偏差为3.22%,样品加标回收率93%～105%。
A rapid and accurate method was developed for the analysis of diethylene glycol in tooth-pastes.Diethylene glycol was extracted from toothpastes and analyzed by GC/MS with microwave extraction.The effects of extraction conditions were investigated and the optimized analytical conditions are as follows： extraction time,solvent and temperature was selected as 20min,ethanol and 120oC,respectively.The method detection limit of is 0.4 mg/ L in range of 1mg/ L^500mg/ L,relative standard deviation was 3.22%,and the spiked standard recoveries were between 93%～105%.
出处
《巢湖学院学报》
2010年第6期73-76,共4页
Journal of Chaohu University
基金
安徽省教育厅自然科学基金(项目编号:KJ2008B14ZC)
教育部高等学校特色专业建设项目(项目编号:TS12159)
关键词
微波萃取
GC/MS
二甘醇
牙膏
microwave extraction
GC/MS
diethylene glycol
toothpastes
