硫脲浸取—光度法测定硫化矿中金

Determination of Gold in Sulfurized Minerals by Spectrophotometry with Thiourea Sample Decomposition

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％。

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