摘要
本文以丙酮为溶剂、402高分子微球为固定相、以氢气为载气,采用固定进样,'外标一峰高定量法',简便、快速、准确地测定了均苯四酸二酐中微量水份.其水峰峰高与水份含量有良好的线性关系.回收率在97.2—106之间.该方法未见文献报道.适用于其它固态有机物中微量水份的测定.
This paper developed an 'external standard-peak height quantitative method' for exactly and rapidly determining micro-moisture in pyromellitic acid dianhydride, in which acetone is used as solvent, 402 polymer micro—sphere as stationary phase, and hydrogen as carrier gas. A good linear relationship between the peak height of moisture peak and the moisture content is established. The coefficient of recovery is 97.2 to 106 pcrcents. This method may also be suitable to determination of micro—moisture in other solid organic substances.
关键词
均苯四酸二酐
气相色谱
水
PMDA
micro-moisture
gas chromalography
