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Citation: LI Gang, WANG Fang, YOU Juan, WU Qi-Nan. Phase & Structure of Traditional Chinese Medicine Xuan Jing Shi[J]. Chinese Journal of Applied Chemistry, ;2005, 22(6): 676-678. shu

Phase & Structure of Traditional Chinese Medicine Xuan Jing Shi

LI Gang ^a,, ,
WANG Fang ^a ,
YOU Juan ^b ,
WU Qi-Nan ^c

1.
a Testing & Analysis Center, Nanjing Normal University, Nanjing 210097;
2.
b bDepartment of Chemistry, Nanjing Normal University, Nanjing 210097;
3.
c College of Pharmacy, Nanjing University of Traditional Chinese Medicine, Nanjing

Corresponding author: LI Gang,
Received Date: 28 August 2004
Available Online: 24 December 2004
Fund Project:

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 CaSO₄·2H₂O.Its particle shape is slice and the particles pile up closely.The crystal size was 31.1 nm and the surface area 8.9×10⁵ cm²/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.
- traditional chinese medicine,
- Xuan Jing Shi,
- X-ray powder diffraction,
- crystal size,
- trace elements,
- thermal analysis
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