Abstract
The effect of matrix elements (Na, In, Bi, Zn, Cu) and nitric and hydrochloric acids on the analytical signals of impurity elements in nitrogen microwave-plasma atomic emission spectrometry (MP AES) was studied. In the range of acid concentrations 0.1–0.5 M (for rare-earth elements, 0.1–0.9 M), the analytical signals of the elements did not change. The presence of a matrix element in a concentration of 1 wt % led to a significant change in the signal for most elements, which must be taken into account in selecting a calibration strategy. In MP AES, it is necessary to fully comply with the conformity of samples and calibration solutions regarding the type and concentration of acid and matrix elements.
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This work was supported by the Program of the Federal Scientific Research Institute of State Academies of Sciences for 2013–2020 (project no. V.45.1.4.).
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Translated by O. Zhukova
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Polyakova, E.V., Nomerotskaya, Y.N. & Saprykin, A.I. Effect of Matrix Element and Acid on Analytical Signals in Nitrogen Microwave-Plasma Atomic Emission Spectrometry. J Anal Chem 75, 474–478 (2020). https://doi.org/10.1134/S1061934820040115
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DOI: https://doi.org/10.1134/S1061934820040115