Tracking and tracing identification method of differentiating producing areas of milk on basis of multiple elements and multiple indicators

The application relates to the field of food tracing identification, and particularly to a tracking and tracing identification method of differentiating producing areas of milk on the basis of multiple elements and multiple indicators. According to the tracking and tracing identification method of differentiating the producing areas of the milk on the basis of the multiple elements and the multiple indicators, determination and multivariate statistical analysis are carried out on contents of 40 elements such as Li in the milk and stable isotope ratios of carbon, nitrogen, hydrogen and oxygen through an inductively coupled plasma-mass spectrometer (ICP-MS) and an isotope ratio mass spectrometer (IRMS), testing and statistical comparison are carried out at the same time on milk samples of milk regions by the combined indicators of delta C, delta N, delta H, As, Se, Rb, Sr, Mo, Cs, Ba and T1, feasibility thereof on discrimination of milk producing area tracing is analyzed, a discrimination model is provided, and