将浓度作为辅助参量引入到同步荧光光谱中, 获取溢油样品在10－4～10 g·L-1浓度范围内的浓度同步三维荧光光谱, 应用主成分分析法对胜利油田的5个原油样品及93#及90#汽油样品及0#柴油进行模式识别。 结果表明, 浓度参量的引入可全面的反映溢油样品多环芳烃的组成信息, 比较溢油样品溶液稀释到线性范围内所获取的同步荧光光谱, 该方法提高了应用主成分分析法对溢油样品的识别率, 在很好的区分不同类型的溢油样品的基础上, 实现了正确判别相近油源的溢油种类, 同时解决了样品配置过程中浓度误差对分类识别的影响难题。

In the present paper, concentration as an auxiliary parameter was introduced to the synchronous fluorescence to form concentration synchronous fluorescence matrix of the oil spill samples within the concentration range of 10-4-10 g·L-1. Principal component analysis was used to classify the oil spill samples of 0# diesel, 93# gasonline and 5 crude oil simples from the Shengli oilfield. Experiments show that the introducing of concentration can reflect more composition information of the PAHs. This newly method has a better discrimination than the routine method of the synchronous fluorescence spectra obtained from spill oil samples in linear concentration range. It indicates that the spill oil samples of different type and source can be discriminated precisely, even from the same oilfield. The influence of the errors caused in the samples extraction procedure can be eliminated. All the results suggest that the technique may become a more convenient, rapid and accurate means in spill oil identification