示波极谱法测定矿石中的金

DETERMINATION OF GOLD OF ORES BY OSCILLOSCOPE POLAROGRAM

在ＰＴ－Ｈ３ＰＯ４－ＮａＨ２ＰＯ４体系中，金有一个络合吸附波。峰电位为－０．３２Ｖ（ＶｓＳＣＥ），检测下限为８．２×１０－９ｍｏｌＬ－１。峰电流与金含量在０．０２０～０．８０μｇｍｌ－１范围内呈线性关系。该法可用于金矿中金的测定。

There is an adsorbed wave for gold in the PT-H_3PO_4-NaH_2PO_4 system. It's peak voltage is -0.32v (Vs·SCE) and the detection limit is 8.2×10-9mol·L-1.The linear correlation of the peak current with gold content exists in the range of 0.020～0.80μg·ml-1。This method can be used to determin the gold content of ores.