| 火试金测定锡铅金锑合金中金含量 |
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| 引用本文： | 管有祥,温结胜,甘建壮,段颖.火试金测定锡铅金锑合金中金含量[J].贵金属,2005,26(4):31-34. |
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| 作者姓名： | 管有祥 温结胜 甘建壮 段颖 |
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| 作者单位： | 贵研铂业股份有限公司,云南,昆明,650221;贵研铂业股份有限公司,云南,昆明,650221;贵研铂业股份有限公司,云南,昆明,650221;贵研铂业股份有限公司,云南,昆明,650221 |
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| 摘 要： | 对锡含量高的Sn-Pb-Au-Sb合金中金含量的火试金测定,作者采用熔炼、灰吹手段,解决了Sn干扰测定结果的问题.具体的作法是,用碳酸钠和硼砂配制成混合熔剂,将该混合熔剂与合金试样混合,经高温熔炼,使Sn转变成锡酸钠造渣而不进入铅扣,试样经灰吹富集形成Au-Ag合金.用硝酸分Ag,重量法测Au.合成样回收率99.93%～100.09%,相对标准偏（RSD%）为0.369%.
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| 关 键 词： | 分析化学 火试金法 锡铅金锑合金 金含量 |
| 文章编号： | 1004-0676(2005)04-0031-04 |
| 收稿时间： | 2004-11-25 |
| 修稿时间： | 2004年11月25 |
Determination of Gold Content in Tin-Lead-Gold-Antimony Alloy by Fire Assay Method |
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| GUAN Youxiang,WEN Jiesheng,GAN Jianzhuang,DUAN Ying.Determination of Gold Content in Tin-Lead-Gold-Antimony Alloy by Fire Assay Method[J].Precious Metals,2005,26(4):31-34. |
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| Authors: | GUAN Youxiang WEN Jiesheng GAN Jianzhuang DUAN Ying |
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| Affiliation: | Sino-Platinum Metals Co. Ltd., Kunming, Yunnan 650221, China |
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| Abstract: | For the determination of Au content in Sn-Pb-Au-Sb alloy with high Sn content, the present paper provided a new process to solve the problem of Sn interference on fire assay by smelting at high temperature and cupellation, A mixed flux composed of sodium carbonate and borax was made, and it was mixed with the alloy sample then. By smelting, tin in the sample was changed into sodium stannate, not entering into the lead button. The Au-Ag alloy was formed after cupellation. Ag in the button was dissolved by nitric acid, and Au was weighed. The recovery rate was 99.93% - 100.09%, RSD was 0.369%. |
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| Keywords: | Analytical chemistry Fire assay Tin- lead- gold - antimony alloy Gold content |
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