三维荧光光谱差谱法测定燃油质量  

Fuel' s Quality Measurement Using Three-dimensional Fluorescence Spectral Subtraction

作　　者：尚丽平[1] 张娜[2] 齐广学[2] 

机构地区：[1]西南科技大学信息工程学院,四川绵阳621000 [2]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《西南科技大学学报》2006年第1期76-79,共4页Journal of Southwest University of Science and Technology

摘　　要：针对目前市场上柴油销售中掺兑溶剂油的做假现象,使用FS900高性能稳态荧光光谱仪测量了柴油、溶剂油及柴油和溶剂油不同比例的混合溶液的三维荧光光谱数据。采用Origin软件获得其等高线图,发现仅将柴油和溶剂油的混合溶液光谱和相应纯柴油光谱进行比较并不能提供任何关于混合物中所含溶剂油的确定信息。对三维荧光谱图进行差谱并将差谱后的柴油三维荧光光谱数据进行总体积积分,发现总体积积分值与柴油溶液中所含溶剂油的百分含量成单指数关系。实验表明,三维荧光光谱差谱法对柴油中混有的溶剂油可进行定性判别和定量分析, 可用于分析柴油质量。Aiming at the phenomena of adulterating diesel with solvent naphtha in market, FS900 high performance steady state fluorimeter is used to measure three - dimension fluorescence spectral data of diesel, solvent naphtha and their adulteration with different adulterant proportion. Origin software is used to obtain contour graphs. It is found out that only the comparison of adulteration solutions spectra of diesel and solvent naphtha with corresponding pure diesel spectra can not provide any confirmed information about solvent naphtha adulterated in diesel. By making spectral subtraction on three - dimensional fluores- cence spectra and calculating total volume integral of three - dimension spectral subtraction fluorescence graph, it is found that total volume integral value has single exponential relationship with the concentration of the solvent naphtha adulterated in the diesel. It is showed by experiment that three - dimension fluorescence spectral subtraction can distinguish the solvent naphtha adulterated in diesel qualitatively and quantitatively, which is important to analyze fuel＇ s quality in market and enhance quality control of fuels.

关 键 词：三维荧光光谱 差谱 燃油质量 溶剂油 

分 类 号：O657.3[理学—分析化学] TE626.24[理学—化学]