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研究了Cd(Ⅱ)作催化剂,Au(Ⅲ)与T(4-TMAP)P和二苯胍形成三元络合物的条件,Au(Ⅲ)含量4～200ng/ml内呈线性关系,ε_(410)=6.62×10~5L·mol~(-1)·cm~(-1)。测定9份含Au 2.0pg的标准溶液,其RSD=0.87％。所拟方法适用于测定矿样中痕量Au。
The conditions for the formation of ternary complexes of Au (Ⅲ) with T (4-TMAP) P and diphenylguanidine were studied with Cd (Ⅱ) as catalyst. The linear relationship between Au (410) = 6.62 × 10 ~ 5L · mol ~ (-1) · cm ~ (-1). Nine standard solutions containing 2.0 pg Au were measured with a RSD of 0.87%. The proposed method is suitable for the determination of trace Au in ore samples.