本方法用于测定高纯度对二甲苯中的微量烃类杂质。该方法对质量分数为0.005%的单一杂质进行定量。该方法也可用于测定对二甲苯的总纯度。应使用UOP方法744测定其他工艺流中的混合二甲苯异构体和/或二乙苯。

This method is for determining trace hydrocarbon impurities in high purity p-xylene. The method is quantitative for a single impurity down to a level of 0.005 mass-%. The method can also be used for determining the total purity of the p-xylene. Mixed xylene isomers and/or diethylbenzenes in other process streams should be determined using UOP Method 744.