气相色谱法测定邻苯二甲酸酐中的马来酸酐含量

Determination of Maleic Anhydride in o-Phthalic Anhydride by GC

邻苯二甲酸酐中马来酸酐含量的测定对控制其产品质量非常重要。本文利用气相色谱对邻苯二甲酸酐中有机杂质进行分离,用氢火焰离子化检测器进行检测,峰面积外标法进行定量分析。对该方法的准确度、精密度、检出限数据进行了评价。

Determination of maleic anhydride in o-phthalic anhydride is very important for controlling product quality. In this paper,the organic impurities in phthalic anhydride were separated by gas chromatography and detected by FID detector,and the peak surface standard was used for quantitative analysis. The accuracy,precision and detection limit of the method were evaluated.