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Sharma, Vinamra
- Characterization and Comparative Physico-Chemical Studies of Manahshila (Traditionally Used Arsenic Mineral) and the Corresponding Polymorphs of Realgar (As4S4)
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Authors
Affiliations
1 Department of Rasa Shastra, Institute of Medical Sciences, Centre of Advanced Study in Geology, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
2 Centre of Advanced Study in Geology, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
1 Department of Rasa Shastra, Institute of Medical Sciences, Centre of Advanced Study in Geology, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
2 Centre of Advanced Study in Geology, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
Source
Current Science, Vol 112, No 09 (2017), Pagination: 1936-1941Abstract
This communication presents characterization and comparison of the physico-chemical properties of different varieties of Manahshila with the corresponding polymorphs of realgar. Three varieties of Manahshila have been described in Ayurveda, viz. Shyamangi, Kanavirak and Khandakhya; the last two are acceptable therapeutically. Khandakhya contains high percentage of arsenic than Kanavirak. In this study, both samples of Manahshila have been collected. Their physical and chemical properties have been correlated with the polymorphs of realgar. XRD study classifies Kanavirak as alacranite and Khandakhya as realgar. EDXA study confirms 51.33% and 68.14% of arsenic in alacranite and realgar samples respectively. This work correlates the ancient description of Manahshila with contemporary mineralogical classification (polymorphs) of mineral realgar.Keywords
Alacranite, Manahshila, Physico-Chemical Studies, Polymorphs of Realgar, Mineralogical Classification.Full Text
References
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PDF Views:77
Authors
Affiliations
1 Department of Rasa Shastra, Institute of Medical Sciences, Varanasi 221 005, IN
2 Centre of Advanced Study in Geology, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
1 Department of Rasa Shastra, Institute of Medical Sciences, Varanasi 221 005, IN
2 Centre of Advanced Study in Geology, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
Source
Current Science, Vol 115, No 6 (2018), Pagination: 1174-1178Abstract
This communication presents characterization of Kajjali, a mercury (Hg) based Indian traditional ayurvedic drug, by both ancient and contemporary methodology. For preparation of Kajjali, 225 g each of Shuddha Parada (purified mercury) and ,i>Shuddha Gandhak (purified sulphur), initially purified through traditional methods of purification as described in ayurvedic literature, were manually triturated using stone mortar and pestle until it became a very fine black coloured powder. This preparation process took up to ~78 h. Thereafter, Kajjali was characterized by classical and contemporary methods. Kajjali passed the classical tests like Rekhapurnatwa, Slakshanatwa, Nishchandratwa and Varitara. XRD study confirmed that Kajjali contains mercury sulphide (HgS), identified as metacinnabar (cubic form of HgS), in addition to free sulphur. Composition of Kajjali has been determined by EDXA method, which validated the presence of 88.84% mercury and 11.16% sulphur. SEM studies substantiated particle size distribution of Kajjali, which varied from 60 nm to 2 μm range. Such integration of classical and contemporary studies is important, because such vital medicines should be characterized properly for safety and efficacy before their appropriate use for diseases.Keywords
Kajjali, Metacinnabar, Sulphur, XRD.Full Text
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