中红外光谱法快速测定汽油中的碳酸二甲酯

Determination of Dimethyl Carbonate in Gasoline by Mid-Infrared Spectroscopy

运用日本岛津公司生产的傅里叶红外光谱仪对汽油及碳酸二甲酯进行扫描,获得不受其它组分干扰的碳酸二甲酯的特征吸收峰;并根据朗伯-比尔定律,对碳酸二甲酯进行定量分析。结果表明,傅里叶中红外光谱法可以准确测定汽油中的碳酸二甲酯,该方法具有分析速度快、重复性好、分析成本低等优点。

Fourier transform infrared spectrometer was employed to scan the gasoline and dimethyl carbonate,and the characteristic absorption peak of dimethyl carbonate was obtained.Based on the Lambert-Bill principle,quantitative analysis of dimethyl carbonate was obtained.Results showed that the Fourier infrared spectroscopy method allowed for the accurate determination of dimethyl carbonate in the gasoline.The method had fast analysis speed,good repeatability and low cost analysis.