电感耦合等离子体原子发射光谱法测定锰黄铜中7种元素

发布时间：2018-03-28 06:22

本文选题：电感耦合等离子体原子发射光谱法(ICP-AES)　切入点：锰黄铜　出处：《冶金分析》2017年02期

【摘要】：采用盐酸和硝酸混合酸溶样,选择Cu 324.754nm、Mn 257.610nm、Zn 213.856nm、Fe 259.940nm、Al 396.152nm、Pb 220.353nm、Sn 189.989nm作为分析线,考察基体和共存元素对待测元素的干扰,并计算干扰系数以校正光谱干扰对测量结果产生的影响,从而建立了电感耦合等离子体原子发射光谱法(ICP-AES)测定锰黄铜中Cu、Mn、Zn、Al、Fe、Pb、Sn的方法。结果表明:溶液中Cu质量浓度在1 000μg/mL以内,对Mn、Zn、Al、Fe、Sn的测定无明显影响,但对Pb影响较大。来自Cu 221.810nm对Pb 220.353nm分析线产生的谱线重叠型光谱干扰,可以采用干扰系数校正法很好地进行校正。样品中高含量元素Zn、Mn、Fe之间以及对其他元素的测定基本无影响。各元素校准曲线线性相关系数均不小于0.999 7;各元素检出限为0.000 1%~0.004 2%(质量分数)。按照实验方法测定锰黄铜标准样品中Cu、Mn、Zn、Al、Fe、Pb、Sn,结果的相对标准偏差(RSD,n=6)为0.49%~5.1%,测定值与认定值一致。
[Abstract]:By using mixed acid solution of hydrochloric acid and nitric acid, Cu 324.754nmHN mn 257.610nmMN Zn _ 213.856nm ~ (-1) Fe 259.940nm ~ (-1) Fe _ (259.940) nm ~ (2 +) Al _ (396.152) nm ~ (2 +) Pb _ (220.353) N ~ (2 +) Sn 189.989nm was selected as the analytical line. The interference of matrix and coexisting elements towards the elements was investigated, and the interference coefficient was calculated to correct the effect of spectral interference on the measurement results. An inductively coupled plasma atomic emission spectrometry (ICP-AES-) method has been developed for the determination of Cu ~ (2 +) in manganese brass. The results show that the concentration of Cu in the solution is less than 1 000 渭 g/mL, and there is no significant effect on the determination of Fe ~ (2 +) ~ (2 +) in mn ~ (2 +) Zn ~ (2 +). But it has a great influence on Pb. The overlapping spectral interference from Cu 221.810nm on the analytical line of Pb 220.353nm, The interference coefficient correction method can be used to correct it well. There is basically no effect on the determination of other elements among the high content elements in the sample. The linear correlation coefficient of calibration curve of each element is not less than 0.999 7, and each element is detected. The limit is 0.000 ~ 0.0042. According to the experimental method, the relative standard deviation of the determination of Cu ~ (2 +) mn ~ (2 +) Zn ~ (2 +) AlFeB ~ (2 +) Pb ~ (2 +) ~ (2 +) in the standard samples of manganese brass is 0.49% (RSDN ~ (6)), and the measured value is in agreement with the determined value.
【作者单位】：中国铝业郑州有色金属研究院有限公司国家铝冶炼工程技术研究中心;
【基金】：中国铝业股份有限公司技术标准项目(ZY2016GZC01)
【分类号】：TG115.33

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