火焰原子吸收光谱法测定岩石样品中铜、铅、锌的研究  

Determination of Copper,Lead,and Zinc in Rock Samples by Flame Atomic Absorption Spec⁃trometry

作　　者：李伟明[1] LI Wei-ming(Geological Team of Anhui Provincial Bureau of Geology and Mineral Exploration,Huangshan 245000,China)

机构地区：[1]安徽省地质矿产勘查局332地质队,安徽黄山245000

出　　处：《安徽化工》2024年第2期165-169,共5页Anhui Chemical Industry

摘　　要：主要研究火焰原子吸收光谱法测定岩石样品中的铜、铅、锌。采用石墨消解仪和HF-HCl-HNO3-HClO4酸系消解样品的前处理方法效果相对较好,酸性介质可用盐酸或硝酸溶液,浓度宜为2%~5%。通过实验得出:铜、铅、锌的检出限分别为0.012μg/mL、0.057μg/mL、0.009μg/mL,测定下限分别为0.048μg/mL、0.228μg/mL、0.036μg/mL,方法RSD值(精密度)1.0%~3.6%,加标回收率97.29%~101.0%,符合岩石矿物分析规范的要求。火焰原子吸收光谱法测定铜、铅、锌具有操作简便、实验用时短、干扰少及较好的准确度和精密度的特点。This paper mainly studies the determination of copper,lead,and zinc in rock samples by flame atomic absorp⁃tion spectrometry.The pre-treatment method using a graphite digestion instrument and HF-HCl-HNO3-HClO4 acid system to digest samples has relatively good results.The acidic medium can be hydrochloric acid or nitric acid solution,and the concentration should be 2%to 5%.According to the experiment,the detection limits for copper,lead,and zinc are 0.012μg/mL,0.057μg/mL,0.009μg/mL,with lower limit of 0.048μg/mL,0.228μg/mL,0.036μg/mL,the RSD value(precision)of the method is in the range of 1.0%~3.6%,and the spiked recovery is in the range of 97.29%~101.0%,meeting the requirements of rock and mineral analysis specifications.The method for the determination of copper,lead,and zinc by flame atomic absorption spectrometry has the characteristics of simple operation,short experimental time,less interference,and good accuracy and precision.

关 键 词：铜 铅 锌 火焰原子吸收光谱法 岩石样品 

分 类 号：O657.31[理学—分析化学]