珍珠加工前处理研究

STUDY ON PRETREATMENT IN PEAL PROCESSING

研究了珍珠加工中前处理方法、作用和效果．在前处理过程中，珍珠内有荧光物质、长碳链饱和脂肪酸（脂）等物溶出。珍珠的颜色不同、前处理工艺方法不同．溶出物质也不同．经过前处理，珍珠的光泽明显增加；漂白速度有所加快。可通过测溶液折射率变化的方法来比较前处理工艺中有机溶剂的处理效果。

The method, function and effect of pretreatment, in pear processing are expounded in this paper. During the process of pretreatment, fluorochrome. long - chain saturated aliphatic acid (ester) are dissoved out of peal. Different color and different pretreament for Peal can bring the different materials dissolved out of it. Apparently .this pretreatment will shed its further luster and also speed up its bleaching The treatment effect of organic solvent in pretreatment can be identified by means of measuring the refraction index of the solution.