高熵合金AlCrFeCoNiCu主元素分析及微合金化的分子干扰研究

IF 0.7 Q4 CHEMISTRY, ANALYTICAL Methods and Objects of Chemical Analysis Pub Date : 2022-01-01 DOI:10.17721/moca.2022.43-53
V. D. Kurochkin, M. Kolomytsev, O. Romanenko
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摘要

本文考虑了高熵AlCrFeCoNiCu合金微合金化主要成分和元素的辉光放电质谱分析的特殊性。ArxAy+i、ArxG+i、AxBy+i型分子干扰(其中A、B为样品组分,G为单原子气体和2-3原子气体;计算了该合金在辉光放电等离子体阴极溅射过程中形成的X, y = 1,2, I -离子电荷,I = 1,2),并进行了实验测试。结果表明,在分辨率为R0.5≥7000的光谱仪上,Me2+和ArMe+类型的分子离子在同位素质量85Rb到107Ag范围内的影响最大。在这个质量范围内,需要仔细选择同位素以满足检测极限条件。在质谱的其他领域,分析的灵敏度受到背景电流和探测器灵敏度的限制,并且在通常的ppb水平上使用这种方法。
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Investigation of Molecular Interferences at GDMS Analysis of Main Elements and Microalloing of High-Entropy Alloy AlCrFeCoNiCu
The peculiarities of the glow discharge mass-spectrometry (GDMS) analysis of the main components and elements of microalloying of high-entropy AlCrFeCoNiCu alloy are considered in the paper. Molecular interferences of ArxAy+i, ArxG+i, AxBy+i types (where A, B are the components of the sample, G are single and 2-3 atomic gases; x, y = 1, 2, i - charge of ion, i = 1, 2), which are formed during cathode sputtering of this alloy in glow discharge plasma were calculated and experimentally tested. It is shown for spectrometers at resolution R0.5 ≥ 7000, the greatest influence of molecular ions of Me2+ and ArMe+ types exist in the range of isotope masses from 85Rb to about 107Ag. A careful selection of isotopes is required in this mass range to meet detection limit conditions. In other areas of the mass spectrum, the sensitivity of the analysis is limited by the background current and the sensitivity of the detectors and is at the usual ppb-level for this method.
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来源期刊
CiteScore
1.00
自引率
14.30%
发文量
12
期刊介绍: The journal "Methods and objects of chemical analysis" is peer-review journal and publishes original articles of theoretical and experimental analysis on topical issues and bio-analytical chemistry, chemical and pharmaceutical analysis, as well as chemical metrology. Submitted works shall cover the results of completed studies and shall make scientific contributions to the relevant area of expertise. The journal publishes review articles, research articles and articles related to latest developments of analytical instrumentations.
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