三氯乙醛废硫酸中有机物的气相色谱分析

Gas chromatography analysis of organics in waste sulfuric acid containing trichloroacetaldehyde

介绍以对二甲苯为内标物，分析三氯乙醛废硫酸中三氯乙醛、三氯乙酸乙酯及硫酸二乙酯的气相色谱法。结果表明：在0～50g／L的范围内，三氯乙醛、三氯乙酸乙酯及硫酸二乙酯的标准工作曲线的相关系数分别为0．9998、0．9993及0．9994，回收率范围分别为98．59％-100．27％、96．16％-101．68％及97．37％～103．63％，标准偏差低于0．96％，变异系数低于4．20％，该方法简单、快速，准确度和精密度高。

The gas chromatography with p-xylene as internal standard substance was introduced to analyze organics such as trichloroacetaldehyde, ethyl trichloroaeetate and diethyl sulfate in waste sulfuric acid. The results showed that in the range of 0 - 50 g/L, the relative coefficient of the standard curves of trichloroacetaldehyde, ethyl trichloroacetate and diethyl sulfate was 0. 999 8, 0. 999 3 and 0. 999 4 respectively, the recovery rate was 98.59% - 100.27%, 96.16% - 101.68% and 97.37% - 103.63% respectively, the standard deviation was less than 0.96%, and the relative standard deviation was less than 4.20%. This method was simple, quick, and had high accuracy and precision.