金饰品在佩戴过程中出现白色斑点的问题探究

贵金属, 2015, 36(3): 78-80.

金饰品在佩戴过程中出现白色斑点的问题探究

那勃 ^1, , 曹维宇 ^2, , 孟建华 ^3, , 崔建军 ^4,

1.天津市产品质量监督检测技术研究院,天津,300384

2.天津市产品质量监督检测技术研究院,天津,300384

3.天津市产品质量监督检测技术研究院,天津,300384

4.天津市产品质量监督检测技术研究院,天津,300384

基金项目: 国家质检总局科研项目(2012QK297)

关键词：金属材料 , 金 , 汞 , 变白 , 还原

Research on the White Spots Appeared on Gold Ornaments' Wearing Process

Keywords： metal materials , gold , mercury , white , reduction

针对金饰品在佩戴过程中形成白色斑点的问题进行了研究.将金片浸泡到不同浓度的汞离子溶液中,实验结果表明,单纯的汞离子无法令黄金变白;在加入还原剂,且汞离子达到一定浓度条件下,金片出现明显变色现象;研究了汞离子浓度和金片变白程度的关系.

The white spots appeared on gold ornaments in wearing process were studied. In the experiment, gold pieces were soaked into mercury ion solutions with different concentrations. The results showed that mercury ion alone can not change gold color into white; under the conditions of adding reduction agent and the concentration of mercury ion reaching a certain value, the white spots appeared on gold pieces. The relationship between concentration of mercury ion and white changing degree of gold pieces was studied.

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