摘要
建立了气相色谱法定量分析牙膏中甘油含量来鉴别牙膏种类的方法.以正十四烷作为内标,采用DB-FFAP毛细管柱分离样品,氢火焰离子化检测器（FID）测定牙膏中甘油的含量.线性方程为Y=0.3847C-0.0095,相关系数r=0.9996,线性范围为0.01～3.0 mg/mL,最低检测浓度为2.58 μg/mL,平均回收率为96.2％,相对标准偏差1.29％.该方法具有操作简便,灵敏、准确、重现性好等特点,适用于公安基层办案工作的需要.
A new method of identifying the toothpaste samples was established by determinating the content of glycerin in toothpaste samples by gzls chromatography. N-tetradecane was added in and GC analysis of the eluate, prior to GC analysis. The GC analysis was carried out by DB-FFAP capillary column and Flame ionization detector（FID）. The linear equation is Y=0.3847C-0.0095, with r=0.9996; The linear range was 0.01-3.0 mg/mL and the limit of detection was 2.58 μg/mL, the average recoveries were 96.2 % and RSD=1.29 %. The method was simple, rapid and sensitive. A useful method for determining menthol in toothpaste samples was provided for chemical analysis.
出处
《广东化工》
CAS
2014年第4期17-18,16,共3页
Guangdong Chemical Industry
基金
2012年大学生创新训练计划项目
犯罪现场牙膏残留物的检验研究
201210175032
关键词
甘油
牙膏
气相色谱法
glycerin
toothpaste
gs chromatography
