| 利用牙膏中甘油含量鉴别牙膏种类 |
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| 引用本文： | 马丽敏,李继民,马旭阳,等.利用牙膏中甘油含量鉴别牙膏种类[J].广东化工,2014(4):17-18,16. |
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| 作者姓名： | 马丽敏 李继民 马旭阳 等 |
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| 作者单位： | 中国刑警学院法化学系,辽宁沈阳,110035 |
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| 基金项目： | 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 |
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| 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2.58μg/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。
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| 关 键 词： | 甘油 牙膏 气相色谱法 |
Identification of Toothpaste Samples by Determination of Glycerin Content in Toothpaste |
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| Ma Limin,Li Jimin,Ma Xuyang,Yue Wenqi,Zou Ning.Identification of Toothpaste Samples by Determination of Glycerin Content in Toothpaste[J].Guangdong Chemical Industry,2014(4):17-18,16. |
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| Authors: | Ma Limin Li Jimin Ma Xuyang Yue Wenqi Zou Ning |
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| Affiliation: | (China Criminal Police College, Department of Forensic medicine, Shenyang 110035) |
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| Abstract: | 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. |
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| Keywords: | glycerin toothpaste gs chromatography |
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