拉曼光谱子空间重合识别修正液中氯代烃

利用拉曼光谱子空间重合对修正液中氯代烃成分进行识别分析。通过计算混合卤代烃组分与标准样品数据库拉曼光谱之间的子间空夹角,依据夹角变化排列筛选出含有最少标准样品数目的子空间,该子空间所含的标准样品组成为待定性混合氯代烃组成,从而实现对混合氯代烃组分的定性分析。将该方法用于修正液中氯代烃的成分定性分析,准确率达100%。该方法操作简单,检测时间短,准确率高,适用于多组分混合体系中的物质定性分析。

Recognition of Chlorinated Hydrocarbon in Correction Fluid by Means of the Method Based on Judging the Subspace Coincidence of Raman Spectrum

Qualitative recognition of mixed chlorinated hydrocarbons in correction fluid was carried based on judging the subspace coincidence of Raman spectrum. By calculating the angle of Raman spectra of mixed chlorinated hydrocarbons and the gather of standards, the subspace which had the least number of standards was selected according to the angle variation. The composition of the subspace were those of the mixed chlorinated hydrocarbons, so the qualitative recognition of mixed chlorinated hydrocarbons was completed. The method was used to measure the components in correction fluid, and the accuracy rate was 100%. The method is simple in operation, rapid, and accurate, it is suitable for the qualitative detection of multicomponent mixed system.