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http://dx.doi.org/10.6111/JKCGCT.2012.22.4.165

Detection of gamma irradiated South Sea cultured pearls II  

Choi, Hyun-Min (Hanmi Gemological Laboratory (Hanmi Lab))
Lee, Bo-Hyun (Hanmi Gemological Laboratory (Hanmi Lab))
Kim, Young-Chool (Hanmi Gemological Laboratory (Hanmi Lab))
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.22, no.4, 2012 , pp. 165-169 More about this Journal
Abstract
It is very difficult to detect irradiated South Sea cultured pearls (SSCPs) at a low dose by gemological methods (e.g. optical transmission method, microscopic examination, UV fluorescence reaction, and so on). In this study, however, it was possible to distinguish between irradiated SSCPs from un-irradiated SSCPs by ESR analysis. We have analyzed the pearl nacre and nucleus by separating them for the purposed of providing information about the change of $CO^-_2$ radical as growing absorbed doses. And it was found out that the signal of $CO^-_2$ radical of the nacre is more distinct than the nucleus.
Keywords
Irradiated South Sea cultured pearls; Low dose; ESR analysis; $CO^-_2$ Radical; Pearl nacre;
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Times Cited By KSCI : 1  (Citation Analysis)
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