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KMID : 1149220040120010225
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Korean Journal of Oriental Medical Prescription
2004 Volume.12 No. 1 p.225 ~ p.246
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Study for the Standardization of Talcum and Comparison Property before and after Talcum Processing Method
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Kook Yoon-Bum
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Abstract
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Objectives: This study has been done to compare the Talcum’s composition before and after using processing method and to clarify its quality and naming through the historical herbal books.
Methods: I studied the Talcum and processed Talcum by physical and chemical method which contain microscopic analysis, X-ray diffraction analysis, thermal analysis, XRF, ICP, etc, to compare the compositions and its characters.
Results: Talcum is a magnesium hydroxidfe((Mg3[Si4O10][OH]2)). Talcum contains a main ingredients of MgO 29.03-30.40%(31.70%), SiO2 62.00~62.40%(63.50%), H2) 4.40~4.85%(4.80%) and small ingredients, also.
Conclusion: A radio-element contents of U, Th contain less than average contents of the lithosphere’s U 1.8ppm, Th 7.2ppm. There are two sorts of Talcum which are a northern Talcum(solid Talcu) and southern Talcum(soft Talcum). A northern natural products of Talcum(solid Talcum) are used mostly in korea and china.
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KEYWORD
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Talcum, Mineral, processed products
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