Studies on mineral Chinese medicine Xuan Jing Shi were made by means of XRD, SEM, ICP, TG and DSC. The mineral′s phase, crystal size, surface shape, elemental content and thermal dissolution were determined. The resu...Studies on mineral Chinese medicine Xuan Jing Shi were made by means of XRD, SEM, ICP, TG and DSC. The mineral′s phase, crystal size, surface shape, elemental content and thermal dissolution were determined. The results indicate that Xuan Jing Shi is mainly made up of CaSO_ 4·2H_ 2O. Its particle shape is slice and the particles pile up closely. The crystal size was 31.1 nm and the surface area 8.9× 10 5 cm 2/g. When heated, two water molecules were losted in one step. There are plenty of trace elements Zn, Mn, Co, Cu, Mo in Xuan Jing Shi. Above results may serve as a base for quality evaluation of the medicine.展开更多
文摘Studies on mineral Chinese medicine Xuan Jing Shi were made by means of XRD, SEM, ICP, TG and DSC. The mineral′s phase, crystal size, surface shape, elemental content and thermal dissolution were determined. The results indicate that Xuan Jing Shi is mainly made up of CaSO_ 4·2H_ 2O. Its particle shape is slice and the particles pile up closely. The crystal size was 31.1 nm and the surface area 8.9× 10 5 cm 2/g. When heated, two water molecules were losted in one step. There are plenty of trace elements Zn, Mn, Co, Cu, Mo in Xuan Jing Shi. Above results may serve as a base for quality evaluation of the medicine.
