SPECTRAL INTERFERENCES AND THEIR CORRECTION IN ATOMIC EMISSION SPECTRAL ANALYSIS
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
SPECTRAL INTERFERENCES AND THEIR CORRECTION IN ATOMIC EMISSION SPECTRAL ANALYSIS
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| Автор |
Pupyshev, A. A.
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| Тематика |
ATOMIC EMISSION SPECTRAL ANALYSIS
CONTINUOUS AND DISCRETE BACKGROUND CONTINUUM CONTOUR AND WINGS OF SPECTRAL LINES CORRECTION OF SPECTRAL INTERFERENCES MOLECULAR BANDS SCATTERED LIGHT THERMAL RADIATION |
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| Описание |
The main sources of spectral interferences in atomic emission spectral analysis (AESA) are considered, including both wide-range (bremsstrahlung and recombination continuum, radiation of hot condensed particles and electrode ends, scattered light in the spectrometer, overlapping of the analytical line by the wings of the neighbor strong spectral lines of interfering elements, imposition of the components of molecular bands with the very close lines) and narrow-band (partial or complete overlapping of the analytical line with atomic or ionic lines of the sample elements, electrodes and discharge atmosphere; superposition of spectra from higher orders of reflection in conventional diffraction spectrometers and from neighboring orders in two-dimensional echelle spectrometers). The features of their manifestation in various sources of spectrum excitation (flames, DC arc, spark discharges, arc plasma discharges, inductively coupled plasma, microwave plasma, low-pressure electric discharges, laser spark) are considered. The possibilities of reducing the level of spectral interferences or elimination of the spectral noise at the stage of design and manufacturing of AESA devices, as well as upon selecting and adjusting of operation conditions of the analysis are shown. Much attention is paid to the most easily implemented in practice off-peak correction of wide-range spectral interferences. The modern methods of background correction under the spectral peak (under-peak) using a software for atomic emission spectrometers and providing creation of various mathematical models of the background signal in the vicinity of the analytical line at the stage of developing a specific AESA technique are considered. The issues of the choice of spectral lines for analytical measurements, tables and atlases of spectral lines, electronic databases used for this purpose are considered in detail. Specific features of application of the method of inter-element correction with direct spectral overlapping of the lines are given. The operating sequence for taking into account spectral interferences when developing the analysis techniques is proposed. © 2019 by the Author(s).
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| Дата |
2024-04-23T11:10:49Z
2024-04-23T11:10:49Z 2019 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Pupyshev, A. A. (2019). Spectral interferences and their correction in atomic emission spectral analysis. Industrial Laboratory Diagnostics of Materials, 85(1II)), 15–32. doi:10.26896/1028-6861-2019-85-1-ii-15-32
1028-6861 Final All Open Access, Hybrid Gold https://www.zldm.ru/jour/article/download/878/769 http://elar.urfu.ru/handle/10995/132536 36982703 10.26896/1028-6861-2019-85-1-II-15-32 85122216714 |
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| Язык |
ru
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by |
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| Формат |
application/pdf
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| Издатель |
TEST-ZL Publishing, LLC
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| Источник |
Industrial laboratory. Diagnostics of materials
Industrial Laboratory. Materials Diagnostics |
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