湿法分离-ICP-AES法测定粗铜中金、银

Determination of Gold and Silver in Crude Copper by Wet Chemical Separation-ICP-AES

采用湿法分离铜基体后以微孔滤膜抽滤,将抽滤所得不溶物以混合酸溶解,于电感耦合等离子体发射光谱法(ICP-AES)测定粗铜中金银,研究了电感耦合等离子体发射光谱测定粗铜中金、银的分析方法,考察了铜基体对被测元素的干扰,所建立的方法,分析结果与行业标准方法的对照数据吻合,加标回收率在96%～103%,15次测定的RSD为1.45%～1.50%,该方法能够满足粗铜中金银的分析要求。

The copper matrix was separated by wet method and then filtered by microporous membrane.The insoluble matter obtained by the extraction filtration is dissolved by mixed acid.Gold and silver in crude copper were measured by inductively coupled plasma emission spectrometry,The method for the determination of gold and silver in crude copper by inductively coupled plasma emission spectrometry is studied.The interference of copper matrix on measured elements was investigated.The established method and analysis results are consistent with the data of industry standard method with the control data of the colored standard method.The RSD measured 15 times is between 1.45%and 1.50%.This method can meet the analysis requirements of gold and silver in crude copper.