CHEN Xin-mei, WANG Ji-hui. Quality Controlling Methods of Pyrolusite[J]. Chinese journal of experimental traditional medical formulae, 2013, 19(17): 107-109.
CHEN Xin-mei, WANG Ji-hui. Quality Controlling Methods of Pyrolusite[J]. Chinese journal of experimental traditional medical formulae, 2013, 19(17): 107-109. DOI: 10.11653/syfj2013170107.
Objective: Quality controlling method of Pyrolusite was established to evaluate the quality of Pyrolusite. Method: Appearance
microscopic observation
limit of heavy metal and Arsenic salt
content of MnO2 were examined in 10 batches Pyrolusite from different districts of China. Result: Quality differences were obvious. Heavy mental exceeded standard of 5 batches. Difference of MnO2 content was also obvious. Conclusion: Scientific methods of quality control of Pyrolusite is established to produce