张莹莹,石磊.电感耦合等离子体原子发射光谱(ICP-AES)法测定铝铍中间合金中的铍[J].中国无机分析化学,2018,8(1):33-36.
电感耦合等离子体原子发射光谱(ICP-AES)法测定铝铍中间合金中的铍
Determination of Beryllium in Aluminum-beryllium Alloy by Inductively Coupled Plasma-atomic Emission Spectrometry
投稿时间:2017-09-08  最后修改时间:2017-10-29
DOI:doi:10.3969/j.issn.2095-1035.2018.01.008
中文关键词:  电感耦合等离子体原子发射光谱法(ICP-AES)  铝合金    自吸效应
英文关键词:inductively coupled plasma-atomic emission spectrometry (ICP-AES)  aluminum alloy  beryllium  self-absorption effect
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作者单位
张莹莹 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,郑州450041
石磊 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,郑州450041
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中文摘要:
      通过对铍的自吸效应和光谱干扰研究,选取了Be(Ⅱ)3131 nm作为分析线,建立了铝铍合金中测定铍元素含量的电感耦合等离子体原子发射光谱(ICP-AES)法。实验结果表明,谱线Be(Ⅱ)3130 nm的线性范围达到20 μg/mL,谱线Be(Ⅱ)3131 nm的线性范围可达30 μg/mL,当溶液中铍元素的浓度超过线性范围时,两条谱线的工作曲线发生弯曲,产生明显的自吸效应,样品分析过程中避免使用有自吸效应的谱线,可以大大提高分析结果的准确性;样品中主要杂质元素和基体对铍的谱线不产生光谱干扰。方法中铍的检出限为0.0004%。铍的质量浓度在1.0~15μg/mL时,工作曲线的线性回归方程为y=265.1010x+0.45,相关系数R=0.999 645。按实验方法分别对铝铍合金样品和合成的模拟标准样品进行回收率和精密度实验,标准加入回收率在101%~103%,相对标准偏差在0.58%~0.98%。方法能够准确快速地分析铝铍中间合金中铍的含量。
英文摘要:
      In this paper, a method for determination of beryllium (Be)in aluminum-beryllium alloyswas establishedby inductively coupled plasma-atomic emission spectrometry (ICP-AES).Linear calibration was achieved up to the range of 20 μg/mL using Be (II) 313.0 nm line whileusing Be(Ⅱ) 313.1 nm line, calibration up to 30 μg/mL was obtained.For higher Be mass concentrations, self-absorption resulted in non-linearity of calibration curve which can be avoided by selectinglines free from self-absorption. Moreover, selected Be lines were free from spectral interference of coexisting elements in thematrix. The Be limit of detection by the present method was determined 0.0004%(mass fraction). For Be concentration range of 1.0 – 15 μg/mL, linear regression of working curve was y=265.1010x+0.45 with correlation coefficient of R=0.999 645. The recovery rates were between 101% – 104% and the relative standard deviation resides between 0.58%–0.98%.The present results showed that the present method can be used for accurate and fast determination of Be concentration in aluminum-beryllium alloys.
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