常温下在H2 C2 O4 -H2 SO4 介质中 ,用 50 g/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% ,然后使用CL -P2 0 4 萃淋树脂富集含金分解液中Au(Tu) + 2 ,结晶紫分光光度法测定。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%。 In H2 C2 O4 -H2 SO4 media at room temperature, 50 g / L thiourea (Tu) solution can completely extract the gold sulfide gold ore, gold extraction rate of up to 99.8%, and then use CL -P2 Determination of Au (Tu) +2 in gold - bearing decomposition liquid by extraction - extraction resin and determination by crystal violet spectrophotometry. The method was applied to the determination of Au in sulphide primary ore and sulfur-bearing flotation concentrates. The obtained results were in good agreement with those determined by atomic absorption spectrometry (RSD) (n = 5) <3%.