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还剩 5 秒&RESEARCH ON RELATIONSHIP BETWEEN COLOR AND RAMAN SPECTRUM OF FRESHWATER CULTURED PEARL OF GOOD QUALITY--《Acta Mineralogica Sinica》2007年01期
RESEARCH ON RELATIONSHIP BETWEEN COLOR AND RAMAN SPECTRUM OF FRESHWATER CULTURED PEARL OF GOOD QUALITY
QIN Zuo-lu1,MA Hong-yan1,MU Shi-chun2,TONG Zhang-fa1(1.College of Chemistry and Chemical Engineering,Guangxi University,Nanning .State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China)
Raman spectral study was conducted of freshwater cultured pearls of good quality with different colors.It is expected to find the relationship between colors,organic substance of pearls and their Raman spectra.The conclusions were drawn as follows:the wavenumbers,1134 and 1526 cm-1,only appeared in the Raman spectra of red pearls,compared with the Raman spethe Raman shifts which were found in the Raman spectra of violet pearls,31 and 2609 cm-1,disappeared in the Raman spectra of the Raman shifts of certain organic compounds, cm-1of C—C wavenumbers and
cm-1of C=C wavenumbers,appeared in colored pearls and the organic substance was considered as polyacetylenic materials but not carotenoids,as proposed by previous researchers.Pearls of different colors obviously vary with Raman spectrum.The more deeply the same color becomes,the stronger the Raman spectrum of organic substance will be.
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