Dr. Monisha M.*


Back ground: Rajata (Silver) is considered as śuddha loha, in the form of Bhasma, is indicated in various disorders like Smritinasha, Unmāda, Apasmāra, V̄iryakshaya, Vata rogas and also having qualities like Agni-deepana, Vayasthāpana and Rasāyana. Rasa Vagbhata mentioned that Pārada is the best medium for making Bhasmas of metals. Thus, Pārada and Gandhaka were selected for incineration of Rajata. Aims: To Analyse the Physico-Chemical parameters of Rajata Bhasmas. Methods and Material: Rajata Bhasma was prepared according to Rasa tarangini(RT) and analysis were done with respect to various parameters. Rajata patra purchased from authenticated source and which was cut in to small pieces, then samanya sodhana of Rajata done by kanji, takra, kulatha kwatha, gomutra, and tila taila for 3 times. Then visesha sodhana done in Agastya patra swarasa for 3 times. Then it is subjected to marana karma (incineration process) with haratala, gandhaka and parada. Here, 2 kinds of puta were carried out to examine the change of Rajata bhasma. Kukkuta puta done by taking equal quantities of Rajata, Gandhaka and Haratala. Total number of puta was 9 in number. Another was Laghu puta done by equal quanities of Rajata, gandhaka, Parada and half of Haratala. Total number of puta was 21 in number. Results: Kukkuta putita bhasma (Sample1Prepared in Kukkuda puta) was blackish in colour and Laghu putita bhasma (Sample 2/ sample prepared out by Laghu puta)) was brownish in colour. Both these bhasmas were analysed by classical bhasma pareeksha, physico chemical analysis like Loss on Drying, Total ash, Acid insoluble ash, Water soluble extractive, Alcohol soluble extractive, pH value, Fineness of powder and Advanced Instrumental Analysis like XRD (X-ray diffraction), SEM-EDX (Scanning Electron Microscopy-Energy Dispersive X-Ray Analyzer), Particle size analysis by Laser diffraction. Conclusion: By all the above parameters it is concluded that Rajata bhasma prepared with parada shows better quality.

Keywords: Rajata, Rajata bhasma, Bhasma analysis, Bhasma pareeksha, Puta.

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