淡水有核小珍珠增光前后的特征变化

淡水有核小珍珠为近年来逐渐兴起的一种珍珠类型,但在其进入市场之前都需要经过一定的处理工艺,其中增光工艺对其光泽度有明显改善。本研究应用紫外可见(UV-Vis)反射光谱与傅里叶红外光谱(FTIR)比较淡水有核小珍珠增光前后光谱学特征,以此来探讨增光前后珍珠产生特征性变化的原因。结果表明,增光前后珍珠紫外可见光反射率明显上升,但红外光谱所显示的特征基团没有发生显著改变。结论:推测增光工艺可能引起珍珠中有机物基质改变,但对珍珠的基本文石结构未产生太大影响。

Freshwater nucleated pearl is a gradually rising type of pearl in recent years,but it needs to go through a certain treatment process before it enters the market,in which the glossiness of freshwater nucleated pearl is obviously improved.In this study,ultraviolet-visible(UV-Vis)reflectance spectroscopy and Fourier transform infrared spectroscopy(FTIR)were used to compare the spectral characteristics of freshwater nucleated pearls before and after brightening,so as to explore the reasons for the characteristic changes of pearls before and after brightening.The results showed that the UV-visible light reflectivity of pearls increased significantly before and after light enhancement,but the characteristic groups shown by infrared spectra did not change significantly.Conclusion:It is speculated that the brightening process may cause the change of organic matrix in pearls,but has little effect on the basic aragonite structure of pearls.