X-ray diffraction Fourier fingerprint of Farina Ferrum / 中草药

ABSTRACT

Objective: To establish the Fourier transform X-ray diffraction (XRD) fingerprint of Farina Ferrum and to explore the effect of different processing methods on the quality of medicinal materials. Methods: The technology of powder XRD was used for analyzing Farina Ferrum, and the XRD Fourier fingerprints were also determined. Then the XRD Fourier patterns of six kinds of processed products were compared by superimposed way, and the K value method was used to determine the content of Fe3O4 in different processed products. Results: XRD characteristic fingerprint of 11 batches of Farina Ferrum was established. Ten common peaks were characterized, in which the third and sixth peaks were from Fe3O4 and FeO, respectively. There were some differences in the number and intensity of peaks among raw materials and six kinds of processed products, which were consistent with the variation of mass fraction of Fe3O4. Conclusion: The XRD fingerprint could be used for the appraisal and the analysis of Farina Ferrum, and the basis could be provided for the quality evaluation of Farina Ferrum and the option of processing methods.