2,4,6-三氯酚纯品原料纯度定值方法研究  

Purity Measurement Method for 2,4,6-Trichlorophenol Raw Material

作　　者：纪洁[1] 何雅娟[1] 王海峰[1] 韦超[1] 

机构地区：[1]中国计量科学研究院,北京100013

出　　处：《化学分析计量》2013年第4期14-17,共4页Chemical Analysis And Meterage

基　　金：科技部水体污染控制与治理重大科技专项项目(2009ZX07420–008–02)

摘　　要：对用于溶液标准物质制备的纯品原料2,4,6-三氯酚纯度定值方法进行了探讨。采用气相色谱质谱法(GC–MS)对主成分和杂质进行定性鉴定。用高效液相色谱法(HPLC–DAD)、气相色谱法(GC–FID)和差示扫描量热法(DSC)3种不同原理的方法对主成分定值。卡尔费休法测量水分,电感耦合等离子体质谱(ICP–MS)测量无机杂质。2,4,6-三氯酚纯度定值结果为99.3%,扩展不确定度为0.6%(k=2)。The research of purity measurement method for 2,4,6-trichlorophenol raw material which was used to prepare solution reference materials was introduced. GC-MS method was used to identify the structure of 2,4,6-trichlorophenol and other organic impurities. Three different methods （HPLC-DAD, GC-FID and DSC） were established for measuring purity. Karl fisher method was used to determine moisture and ICP-MS analyzer was used to determine inorganic impurities. The purity test results showed that the certified purity value of 2,4,6-trichlorophenol was 99.3% with expanded uncertainty of 0.6%（k=2）.

关 键 词：2 4 6-三氯酚 纯度 高效液相色谱 气相色谱 差示扫描量热 标准物质 

分 类 号：O625[理学—有机化学]