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RAS Chemistry & Material ScienceЖурнал аналитической химии Journal of Analytical Chemistry

  • ISSN (Print) 0044-4502
  • ISSN (Online) 3034-512X

THERMODYNAMIC MODELING OF THE COMPOSITION OF THE MAIN BACKGROUND IONS AND DETERMINATION OF THE GAS KINETIC TEMPERATURE IN A NORMAL (HOT) INDUCTIVELY COUPLED PLASMA

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PII
10.31857/S0044450224100066-1
DOI
10.31857/S0044450224100066
Publication type
Article
Status
Published
Authors
A. A. Pupyshev
  • Occupation: Department of Physical and Chemical Methods of Analysis, Institute of Physics and Technology
  • Affiliation: Ural Federal University
M. V. Kozlova
  • Occupation: Analytical Chemistry Department, Faculty of Chemistry and High Technologies
  • Affiliation: Kuban State University
Volume/ Edition
Volume 79 / Issue number 10
Pages
1110-1121
Abstract
The possibility of studying the manifestation of the main background ions formed by the main elements of inductively coupled plasma (H, N, O and Ar) by the method of thermodynamic modeling underthe operating parameters of the normal (“hot”) plasma regime is considered. Such ions, which create thestrongest spectral interference in the mass spectra, are always observed when introducing aqueous (“wet”)sample solutions into inductively coupled plasma (ICP-MS) mass spectrometers. The quantitative composition of the main background ions in ICP-MS, depending on the plasma temperature, was calculated using thermodynamic modeling in the temperature range from 3000 to 8000 K. It is compared with experimentaldata from measurements of the mass spectra of the main background ions and a high degree of correlation between theoretical and experimental results is shown. The coincidence of calculations and experiments confirms the correctness of the thermodynamic model of thermochemical processes used in ICP-MS andits applicability for subsequent calculations in solving analytical problems. By comparing the theoreticaland experimental mass spectra of the main background ions of the ICP in the normal mode, the possibilityof an unambiguous assessment of the gas kinetic temperature of the plasma was confirmed. It was foundthat the calculated and experimental data on concentrations only for NO+ ions do not coincide with thepatterns noted for other background ions in the normal ICP mode.
Keywords
масс-спектрометрия с индуктивно связанной плазмой режим нормальной плазмы основные фоновые ионы операционные параметры прибора газокинетическая температура плазмы термодинамическое моделирование
Date of publication
15.09.2025
Year of publication
2025
Number of purchasers
0
Views
14

References

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