联合荧光光谱与寿命法检测多次高温加热油

Detecting Multiple Times Heated Vegetable Oil Using Three Dimensional Fluorescence Spectroscopy and Fluorescence Lifetime Analysis

三维荧光光谱法检测多次高温加热植物油,该方法能快速、准确的获得待测样品的三维荧光光谱特征图,但只是定性的分析。当荧光强度变化较小的时候,容易出现误检、漏检的情况。先用三维荧光光谱技术分析植物油样品的光谱信息,然后再通过荧光寿命法,计算多次高温加热植物油中荧光光子的寿命,通过与未加热油荧光寿命的对比,检测多次高温加热植物油。二者联合,进一步提高了检测的准确度,有利于解决误检、漏检的问题,从而为高温加热油的检测提供有力的参考。

Vegetable oil heated repeatedly at a high temperature was detected with three-dimensional fluorescence spectra.The method can obtain the three-dimensional fluorescence spectrum of the sample quickly and accurately.However,it is just a qualitative analysis.When the fluorescence intensity changes a little,it may lead to incorrect or missing discrimination.The spectral information of vegetable oil samples was analyzed with three-dimensional fluorescence spectra,and then lifetime of the photons in it was calculated with fluorescence lifetime analysis,it could be identified whether the oil was heated repeatedly at high temperature with the fluorescence lifetime of different oil samples.The combination of the two methods improves the detection accuracy,so it can help to solve the problems of false detection,and missing detection,so as to provide a strong reference for the detection of vegetable oil heated at a high temperature.