【摘要】 研究了毛细管柱气相色谱法测定煤焦油中萘含量的方法。正辛烷和对四甲基苯分别用作样品的溶剂和内标物,采用内标法定量。对汽化温度、检测温度、气体流速等进行了探讨。方法用于煤焦油中萘含量的分析,标准加入回收率在97.4%~100.4%之间。该法与国家标准方法相比,样品分离效果好,结果准确度高,满足了产品质量检验准确、快速的要求。更多还原

【Abstract】 A method for the determination of naphthalene in coal tar by capillary pillar gas chromatography has been researched.Octane and para tetramethyl benzene were served as the solvent for dissolving sample and internal standard,respectively.Some conditions,such as vaporization temperature,detection temperature and gas flow rate,etc.were also discussed.The recoveries of the method ranged from 97.4% to 100.4% with intenal standard quantitative determination of naphthalene content in coal tar.Compared with the national standard method,the method could meet the demand of rapid and exact verifying for product quality with high performance and accuracy.更多还原