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浅谈次品珠的产生原因及其防止措施

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摘要 珍珠是名贵的装饰品及良好的药材,不同等级珍珠之间的经济价值相差很大,为有效降低珍珠的次品率,提高优质珠的比例,现将次品珠的产生原因及其防止措施分述如下。 1、盐珠 珍珠的表面附有一层不透明的白色物质,珠身表面无光泽。这类珍珠多是从病弱蚌体或死蚌中采收的珍珠;珍珠采收期不当或采收后久置未经加工处理,也易形成盐珠。主要是由于珍珠表面被有机酸腐蚀或外被不透明白色珍珠基质。
出处 《北京水产》 2000年第1期16-16,共1页 journal of beijing fisheries
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