Abstract: ATRFTIR was used to determine the content of dimethyl carbonate in gasoline. Quantitative analysis was performed based on LambertBill principle. The results show good linearity with the content of dimethyl carbonate in the range of 0.5%~10.0%,whereas the detection limit was 0.15% and the spiked recover rate were 101.4%~118.4% with the relative standard deviations less than 1%. The method proves to be simple, accurate, fast, reproducible and also costeffective.

Key words: ATRFTIR, LambertBill principle, Gasoline, Dimethyl carbonate, Fast detection method 

摘要： 摘 要:  利用液体衰减全反射 � 傅里叶变换红外光谱法( ATR - F T I R) 快速测定汽油中碳酸二甲酯的质量分数,
并且利用朗伯 � 比尔定律对其进行定量分析。结果表明, 当碳酸二甲酯质量分数为0. 5%~1 0. 0%时, 该方法具有良
好的线性关系, 检出限为0. 1 5%, 回收率为1 0 1. 4%~1 1 8. 4%, 相对标准偏差低于1%。该方法具有简单、 准确、 快速、
重复性好、 成本低的优点。

关键词: 液体衰减全发射, 傅里叶变换红外光谱法, 朗伯, 比尔定律, 汽油, 碳酸二甲酯, 快速检测方法