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应用英国Edinburgh公司生产的FLS920P荧光光谱仪实验测定了诱惑红、日落黄和亮蓝三种合成食品色素混合溶液的三维荧光光谱,将荧光光谱数据应用化学计量学中的平行因子分析(PARAFAC)和交替三线性分解(ATLD)二阶校正算法进行计算处理,对混合合成食品色素溶液中各组分进行了定性和定量检测。应用核一致诊断法,确定主成分数为3。PARAFAC算法解析后的回收率分别为98.75%±8.9%,97.22%±2.9%和99.00%±2.9%,ATLD算法解析后的回收率分别为99.78%±5.9%,92.52%±5.5%和97.23%±5.8%。结果表明,两种方法都可以用于三个组分的直接快速测定,PARAFAC算法更稳定,更具优势。
The three-dimensional fluorescence spectra of the mixed solutions of temptation red, sunset yellow and brilliant blue synthetic food were determined by the FLS920P fluorescence spectrometer manufactured by Edinburgh, UK. The fluorescence spectra were analyzed by parallel factor analysis (PARAFAC) and alternating trilinear Decomposition (ATLD) second-order calibration algorithm for calculation and processing, the mixed synthetic food pigment solution qualitative and quantitative detection of each component. The application of nuclear unanimous diagnosis, to determine the main component of 3. The analytical recoveries of PARAFAC were 98.75% ± 8.9%, 97.22% ± 2.9% and 99.00% ± 2.9%, respectively. The recoveries of ATAF were 99.78% ± 5.9%, 92.52% ± 5.5% and 97.23% ± 5.8%. The results show that both methods can be used for the direct and rapid determination of three components, PARAFAC algorithm is more stable and has more advantages.