Patent ID: 8891081

Claim:
A Raman spectroscopy method of measuring melamine contents in dairy products having different matrixes, comprising the following steps: (a) establishing a database of characteristic curves of the dairy products having different matrixes; (b) taking several copies of dairy products to be detected having a certain unknown matrix, and adding melamine standard solutions having different concentrations into the several copies respectively, to obtain a series of such dairy product samples in which the relative concentrations of the melamine are known; (c) performing Raman spectrum testing analysis on the dairy product samples and obtaining corresponding characteristic peak intensities, so that a slope of the characteristic curve showing variation of the characteristic peak intensities of the dairy product samples with the relative concentrations of the melamine is obtained; (d) carrying out a search in the database established in the step (a) by using the slope of the characteristic curve of the dairy product samples, so as to find out a characteristic curve matched with it; and (e) calculating concentration of the melamine in the dairy products to be detected by using the matched characteristic curve and the characteristic peak intensity of the dairy product to be detected.