The Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China; College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China; Beijing Radiation Center, Beijing 100875, China.
The Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China; College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China; Beijing Radiation Center, Beijing 100875, China.
Food Chem. 2016 Nov 1;210:435-41. doi: 10.1016/j.foodchem.2016.05.012. Epub 2016 May 2.
This paper presents an alternative analytical method based on the Rayleigh to Compton scattering intensity ratio and effective atomic number for non-destructive identification of vegetable oils using confocal energy dispersive X-ray fluorescence and scattering spectrometry. A calibration curve for the Rayleigh to Compton scattering intensity ratio and effective atomic number was constructed on the basis of a reliable physical model for X-ray scattering. The content of light elements, which are "invisible" using X-ray fluorescence, can be calculated "by difference" from the calibration curve. In this work, we demonstrated the use of this proposed approach to identify complex organic matrices in different vegetable oils with high precision and accuracy.
本文提出了一种基于瑞利-康普顿散射强度比和有效原子数的分析方法，利用共焦能量色散 X 射线荧光和散射光谱法对植物油进行无损鉴别。该方法基于 X 射线散射的可靠物理模型，建立了瑞利-康普顿散射强度比和有效原子数的校准曲线。利用该曲线，可以从荧光无法探测的轻元素的含量“差值”中计算出来。在本工作中，我们展示了这种方法在高精度和高准确性地鉴别不同植物油中的复杂有机基质方面的应用。
