碳氢化合物照气相色谱法(通则0521)测定供试品气体取本品,即得对照品气体取甲烷含量为0.0020%的气体(以氮气为稀释剂)。色谱条件用玻璃球为填料的色谱柱(4mm×0.8m,80目);柱温为110℃;进样口温度为110℃;检测器为火焰离子化检测器,温度为120℃测定法精密量取供试品气体与对照品气体,分别注入气相色谱仪,在净化温度为360℃时测得的峰面积为相应空白值;精密量取供试品气体与对照品气体,分别注入气相色谱仪,测定峰面积,减去相应空白值后的峰面积为校正峰面积限度按外标法以校正峰面积计算,含碳氢化合物(以甲烷计)不得过0.0020%。

浩瀚色谱（山东）应用技术开发有限公司，依据药典二氧化碳2020年版研制生产的4mm×0.8m,80目玻璃球为填料的色谱柱，分离二氧化碳中的碳氢化合物，柱效高，分离良好，峰型对称，在安捷伦7890B安装使用，简便，快捷，无需改造仪器，无论是填充柱系统还是毛细管系统，均可实现互联互通。

  Hydrocarbons are determined by gas chromatography (General Rule 0521). The test gas is taken from this sample, and the reference gas is taken from a gas with a methane content of 0.0020% (using nitrogen as a diluent). Chromatographic conditions: A chromatographic column with glass spheres as fillers (4mm × 0.8m, 80 mesh); The column temperature is 110 ℃; The inlet temperature is 110 ℃; The detector is a flame ionization detector, and the temperature is 120 ℃. The test gas and the reference gas are precisely measured and injected into the gas chromatograph. The peak area measured at a purification temperature of 360 ℃ is the corresponding blank value; Accurately measure the test gas and reference gas, inject them separately into the gas chromatograph, measure the peak area, and subtract the corresponding blank value to obtain the peak area as the calibration peak area limit. Calculate the calibration peak area using the external standard method, and the content of hydrocarbons (calculated as methane) should not exceed 0.0020%.
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has developed and produced a 4mm × 0.8m, 80 mesh glass ball packed chromatography column based on the Pharmacopoeia 2020 edition of carbon dioxide. The column separates hydrocarbons from carbon dioxide with high column efficiency, good separation, and symmetrical peak shapes. It is easy and fast to install and use on Agilent 7890B, without the need for instrument modification. Both the packed column system and capillary system can be interconnected.