HH-WAX毛细管柱气相色谱内标法测定化妆品中的甲醇和乙醇含量
HH-WAX毛细管柱气相色谱内标法测定化妆品中的甲醇和乙醇含量 详细信息：
名称：石英毛细管柱
固定相：键合/交联聚乙二醇
规格：60m*0.25mm*0.25um
型号：HH-WAX
浩瀚色谱（山东）应用技术开发有限公司建立了气相色谱内标法测定化妆品中甲醇和乙醇的方法。通过考察稀释液、内标物和气相色谱柱等条件,以N,N-二甲基甲酰胺作为稀释液,异丙醇作为内标物,选用HH-WAX毛细管柱进行色谱分离,保留时间定性,内标法定量,并与《化妆品卫生规范》(2007版)中气相色谱顶空外标法测定甲醇的方法进行了比较。结果表明,用气相色谱内标法测定化妆品中甲醇和乙醇的含量,在0.8 mg/L～500 mg/L范围内具有良好的线性关系(R2甲醇=0.999 8和R2乙醇=0.999 7),相对误差<2.4%,回收率为92.7%～104.7%(n=6)。
HH-WAX毛细管柱气相色谱内标法测定化妆品中的甲醇和乙醇含量 测试谱图：
Determination of Methanol and Ethanol in Cosmetics by HH-WAX Capillary Column Gas Chromatography with Internal Standard
Determination of Methanol and Ethanol in Cosmetics by HH-WAX Capillary Column Gas Chromatography with Internal Standard Details:
Name: Quartz Capillary Column
Stationary Phase: Bonded/Cross-Linked Polyethylene Glycol
Specifications: 60m*0.25mm*0.25um
Model: HH-WAX
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established a gas chromatography internal standard method for the determination of methanol and ethanol in cosmetics. By investigating the conditions of the diluent, internal standard and gas chromatographic column, using N,N-dimethylformamide as the diluent and isopropanol as the internal standard, the HH-WAX capillary column was used for chromatographic separation, and the retention time was qualitative. , quantified by internal standard method, and compared with the method for the determination of methanol by gas chromatography headspace external standard method in "Hygienic Standard for Cosmetics" (2007 edition). The results showed that the content of methanol and ethanol in cosmetics was determined by gas chromatography internal standard method, and there was a good linear relationship in the range of 0.8 mg/L to 500 mg/L (R2 methanol = 0.999 8 and R2 ethanol = 0.999 7). The error was less than 2.4%, and the recoveries ranged from 92.7% to 104.7% (n=6).
Determination of Methanol and Ethanol in Cosmetics by HH-WAX Capillary Column Gas Chromatography Internal Standard Test Spectrum: