文献类型：期刊文献

中文题名：Ce(Ⅲ) Salt Induced Changes of Superficial Microstructure in Freshwater Pearls

英文题名：Ce(Ⅲ) Salt Induced Changes of Superficial Microstructure in Freshwater Pearls

作者：施维林[1];金叶飞[1];马锡英[1]

机构：[1]School of Life Sciences, Shaoxing University

年份：2007

卷号：25

期号：5

起止页码：637

中文期刊名：稀土学报：英文版

收录：CSTPCD、、Scopus、CSCD2011_2012、CSCD

基金：Project supported by the Chinese Ministry of Education (205065)

语种：中文

中文关键词：微观结构;稀土元素;化学结构;玻璃;霰石

外文关键词：pearls; microstructure; aragonite blocks; glossiness; rare earth elements

中文摘要：The transition of the superficial microstructure of freshwater pearls induced by Ce was investigated by means of scanning electron microscopy. The pearls were cultured in freshwater containing 0 (control group), 0.5, 1, and 1.5 mg·L-1 of a Ce additive. X-ray photoelectron spectroscopy (XPS) measurement showed that the concentration of Ce absorbed in the superficial microstructure of pearls was positively correlated to the additive Ce. At the same time, the surface microstructure of pearls changed greatly with Ce concentration, the shape of the blocks changed from spindly to perfect regular hexagonal sheets and finally to round discs. The glossiness of the pearls changed correspondingly with the microstructure, pearls possessing the regular hexagonal blocks having the highest glossiness. Therefore, the REE Ce exerted a significant influence on the microstructure and glossiness of freshwater pearls. An appropriate quantity of Ce may improve the glossiness of pearls.

外文摘要：The transition of the superficial microstmcture of freshwater pearls induced by Ce was investigated by means of scanning electron microscopy. The pearls were cultured in freshwater containing 0 （control group ）, 0.5, 1, and 1.5 mg·L^-1 of a Ce additive. X-ray photoelectron spectroscopy （XPS） measurement showed that the concentration of Ce absorbed in the superficial microstmcture of pearls was positively correlated to the additive Ce. At the same time, the surface microstmcture of pearls changed greatly with Ce concentration, the shape of the blocks changed from spindly to perfect regular hexagonal sheets and finally to round discs. The glossiness of the pearls changed correspondingly with the microstmcture, pearls possessing the regular hexagonal blocks having the highest glossiness. Therefore, the REE Ce exerted a significant influence on the microstructure and glossiness of freshwater pearls. An appropriate quantity of Ce may improve the glossiness of pearls.