波消解-电感耦合等离子体原子发射光谱法测定铜精矿中铜
邹雯雯1,管嵩1,张坤明2,马昕2
1.青岛海关技术中心,山东青岛 266500; 2.青岛海关,山东青岛 266001
Determination of copper in copper concentrates by microwave digestion-inductively coupled plasma atomic emission spectrometry
邹雯雯1,管嵩1,张坤明2,马昕2
1. Technical Center of Qingdao Customs, Qingdao 266500, China; 2. Qingdao Customs, Qingdao 266001, China
摘要:建立微波消解-电感耦合等离子体原子发射光谱法测定铜精矿中铜的方法。0.200 0 g铜精矿样品经王水于微波消解仪中消解完全,通过铁基体匹配消除铁对铜的干扰,以204.379 nm为分析谱线进行测定。铜的质量浓度在0~802 mg/L范围内与其对应的发射强度线性关系良好,线性相关系数为0.999 9,检出限为0.023 mg/L。测定结果的相对标准偏差为0.27%~0.61%(n=6)。按照该方法分析国家标准物质,相对误差为-1.12%~0.62%,测定值与认定值相吻合。按照该方法分析铜精矿样品,所得结果与国家标准方法相一致,可以为行业提供参考和借鉴。
Abstract:A method for the determination of copper in copper concentrate by microwave digestion-inductively coupled plasma atomic emission spectrometry was established. 0.200 0 g copper concentrate sample was completely digested in a microwave digester by aqua regia. The interference of iron on copper was eliminated by iron matrix matching, and the copper was determined with 204.379 nm as the analytical spectral line. The mass concentration of copper had a good linear relationship with its corresponding emission intensity in the range of 0-802 mg/L, the linear correlation coefficient was 0.999 9, and the detection limit was 0.023 mg/L. The relative standard deviation of the determination results was 0.27%-0.61%(n=6). National reference materials were analyzed according to this method, the relative error was-1.12%-0.62%, and the measured value was consistent with the certified value. The results obtained from the analysis of copper concentrate samples by this method were consistent with the national standard method, which can provide reference for the industry.
关键词:微波消解;电感耦合等离子体原子发射光谱法;铜精矿;铜
Keywords:microwave digestion; inductively coupled atomic-optical emission spectrometry; copper concentrates;copper
基金:青岛海关科研计划项目(QK202032)(2020HK250)
本文引用格式:
邹雯雯,管嵩,张坤明,等.波消解-电感耦合等离子体原子发射光谱法测定铜精矿中铜[J].化学分析计量,2022,31(5):14.
ZOU Wenwen,GUAN Song,ZHANG Kunming,et al. Determination of copper in copper concentrates by microwave digestion-inductively coupled plasma atomic emission spectrometry[J]. Chemical Analysis and Meterage,2022,31(5):14.
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