Determination of 15 elements in Chinese herbal compound feed additives by microwave digestion and inductively coupled plasma mass spectrometry
The Chinese herbal compound feed additive was pre-treated by microwave digestion method,and the content of 15 mineral elements in Chinese herbal compound feed was determined by ICP-MS.The results showed that the correlation were all≥0.9956,and the limits of detection and quantification were 0.0045～0.1254 μg/kg and 0.0124～0.8945 μg/kg respectively.The method was used to verify the national standard quality control samples of rice(GBW10010a)and wheat(GBW10011a).The measured values of 15 elements were all within the range of true values,and the relative standard deviation(RSDs)was less than 10.0%,indicating that the method had good precision and accuracy,and could meet the experimental requirements.The content data of 15 mineral elements in Chinese herbal compound feed were standardized and evaluated by principal component analysis.The contribution rate of the first 4 principal components was 79.072%,which could represent the original data matrix information,and it could be determined that Na,Mg,Ca,Fe,Se,Sb and Mo were the characteristic elements of Chinese herbal compound feed additives.The results indicated that the established method could quickly and accurately analyze and evaluate the content of inorganic elements in Chinese herbal compound feed additives in poultry feed,and provide an ideal analysis method for its quality control and scientific evaluation.
NETL
NSTL
万方数据
