电感耦合等离子体发射光谱法测定金精矿中铜铅锌镉

Determination of Cu,Pb,Zn and Cd in gold concentrates by inductively coupled plasma-atomic emission spectrometry

摘要: 采用盐酸-硝酸-高氯酸混合酸消解样品，盐酸为介质，电感耦合等离子体发射光谱法测定金精矿中铜、铅、锌、镉。方法检出限分别为Cu 0.002 2 μg/mL、Pb 0.014 0 μg/mL、Zn 0.004 2 μg/mL、Cd 0.003 5 μg/mL，加入标准物质回收率分别为Cu 97.67 %～102.25 %、Pb 96.97 %～105.07 %、Zn 97.00 %～105.50 %、Cd 95.00 %～105.00 %，测定结果的相对标准偏差分别为Cu 3.03 %～3.79 %、Pb 1.24 %～4.52 %、Zn 1.62 %～3.91 %、Cd 1.94 %～4.16 %。该方法操作简单、准确可靠，满足实验室检测需求，适合大批量样品的测定。

Abstract: The samples were digested with HCl-HNO3-HClO4 mixed acid.Then Cu,Pb,Zn and Cd in gold concentrates are determined in HCl media by inductively coupled plasma-atomic emission spectrometry.The detection limit is Cu 0.002 2 μg/mL,Pb 0.014 0 μg/mL,Zn 0.004 2 μg/mL,Cd 0.003 5 μg/mL respectively.The recovery rate of reference materials is Cu 97.67 %-102.25 %,Pb 96.97 %-105.07 %,Zn 97.00 %-105.50 %,Cd 95.00 %-105.00 %, respectively.The RSD is Cu 3.03 %-3.79 %,Pb 1.24 %-4.52 %,Zn 1.62 %-3.91 %,Cd 1.94 %-4.16 % respectively.The method is easy to operate,accurate and reliable,can meet the lab test requirement and is suitable for large batch test of samples.