| 硫脲浸取—光度法测定硫化矿中金 |
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| 引用本文： | 刘建,闫英桃.硫脲浸取—光度法测定硫化矿中金[J].岩矿测试,2000,19(1):74-76,79. |
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| 作者姓名： | 刘建 闫英桃 |
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| 作者单位： | 西安工程学院应用化学系,西安,710054 |
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| 摘 要： | 常温下在Ｈ２Ｃ２Ｏ４－Ｈ２ＳＯ４介绍中，用５０ｇ／Ｌ硫脲（Ｔｕ）溶液可完全浸提含金硫化矿中Ａｕ，对金的浸取率可达９９．８％，然后作用ＣＬ－Ｐ２０４萃淋树脂事集含金分解液中Ａｕ（Ｔｕ）２＾＋，结晶紫分光度法测定。方法用于硫化原生矿及含硫浮选精矿中Ａｕ的测定，所得结果与王水分解原子吸收法测定相符，其ＲＳＤ（ｎ＝５）〈３％。
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| 关 键 词： | 金 硫脲 CL－P204 萃淋树脂 硫化矿 光度法 |
Determination of Gold in Sulfurized Minerals by Spectrophotometry with Thiourea Sample Decomposition |
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| LIU Jian,YAN Ying tao,ZHAO Gang,YUAN Xiu ru.Determination of Gold in Sulfurized Minerals by Spectrophotometry with Thiourea Sample Decomposition[J].Rock and Mineral Analysis,2000,19(1):74-76,79. |
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| Authors: | LIU Jian YAN Ying tao ZHAO Gang YUAN Xiu ru |
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| Abstract: | In the medium of H 2C 2O 4 H 2SO 4 gold in sulfurized minerals can be decomposed by 50 g/L of thiourea solution with 99.8% of leaching out efficiency for gold. Gold then can be concentrated by chromatography with CL P 204 resin and determined by spectrophotometry with crystal violet. The method has been applied to determination of gold in crude and concentrated sulfurized minerals. The results are in agreement with those provided by AAS with aqua regia sample decomposition. The precision is <3% RSD( n =5). |
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| Keywords: | gold thiourea sample decomposition CL P 204 resin |
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