Zobrazeno 1 - 10
of 14
pro vyhledávání: '"L. V. Usova"'
Autor:
L. V. Usova, Yu. G. Lavrent'ev
Publikováno v:
Russian Geology and Geophysics. 62:1209-1213
—The basic software package of a JXA-8230 microanalyzer, like its predecessor JXA-8100, uses the long-established ZAF correction method (with some differences) for a quantitative analysis: Calculation of mass absorption coefficients is based on Cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58d272bbc38c2bb5702bd8324e94b0b9
https://doi.org/10.2113/rgg20204274
https://doi.org/10.2113/rgg20204274
Publikováno v:
Journal of Analytical Chemistry. 75:902-908
To increase the accuracy of electron probe microanalysis, it was proposed to calculate absorption coefficients range-by-range, with selecting an optimum calculation method for each absorption range. The approach was implemented in the analysis of roc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7f6f258fc3ce20883d71164cd13e5d0
https://doi.org/10.1134/s106193482005010x
https://doi.org/10.1134/s106193482005010x
Autor:
L. V. Usova, Yu. G. Lavrent'ev
Publikováno v:
Russian Geology and Geophysics. 59:1461-1468
X-ray electron probe microanalysis is a complete mineral analysis technique. Therefore, the sum of obtained concentrations can be used as an indicator of the quality of analysis. There are two kinds of errors of the sum of concentrations. The first i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b43d5df345961e0e1f60e765e6c43784
https://doi.org/10.1016/j.rgg.2018.10.006
https://doi.org/10.1016/j.rgg.2018.10.006
Autor:
Yu. G. Lavrent'ev, L. V. Usova
Publikováno v:
Journal of Analytical Chemistry. 73:42-49
Four methods of correction and three methods of calculation of absorption coefficients are tested in electron probe microanalysis of rock-forming minerals. Experimental data by Pouchou and Pichoir, Sewell–Love–Scott, and Armstrong are attracted i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af41b6affdf18cfa5848766aea7906b2
https://doi.org/10.1134/s1061934817110077
https://doi.org/10.1134/s1061934817110077
Autor:
L. V. Usova, Yu. G. Lavrent’ev
Publikováno v:
Аналитика и контроль. 20:15-22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f93e71c5f12178d52ead0c39706100d3
https://doi.org/10.15826/analitika.2015.20.1.006
https://doi.org/10.15826/analitika.2015.20.1.006
Publikováno v:
Russian Geology and Geophysics. 56:1428-1436
The protocol for analysis of rock-forming mineral compositions by X-ray electron probe microanalysis used at the Institute of Geology and Mineralogy, Novosibirsk, Russia, is described. The analysis is conducted with a JXA-8100 electron probe microana
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9ee1624fbc7167d4fbd2efcf2bf8596
https://doi.org/10.1016/j.rgg.2015.09.005
https://doi.org/10.1016/j.rgg.2015.09.005
Publikováno v:
Russian Geology and Geophysics. 56:1154-1161
The results of electron probe microanalysis of several rock-forming minerals by wavelength-dispersive spectrometry (WDS) and energy-dispersive spectrometry (EDS) are compared, and the metrological characteristics of both methods are studied. The meas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd4e064b2657bec8e2b1153568e0dc70
https://doi.org/10.1016/j.rgg.2015.07.006
https://doi.org/10.1016/j.rgg.2015.07.006
Publikováno v:
Journal of Analytical Chemistry. 66:831-837
Crystals of 15 rare-earth element phosphates, which provide a set of standard reference samples in X-ray electron probe microanalysis, were synthesized and tested for homogeneity and stoichiometry. The phosphates were synthesized in two stages, the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6c23b2d3f8320f0f7157ef66a83804a
https://doi.org/10.1134/s1061934811090085
https://doi.org/10.1134/s1061934811090085
Autor:
Alexey Ragozin, N. S. Karmanov, L. V. Usova, Nikolay V. Sobolev, Alla M. Logvinova, O. A. Kozmenko, Yu. G. Lavrent'ev
Publikováno v:
Doklady Earth Sciences. 439:970-973
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ace413dc16492d0910af8ed2c757560
https://doi.org/10.1134/s1028334x11070099
https://doi.org/10.1134/s1028334x11070099
Publikováno v:
Journal of Analytical Chemistry. 65:249-254
Specific sources of measurement errors have been studied. In the presence of perturbing radiation, the automatic setting of the spectrometer discrimination mode is not reasonable. When choosing the transmittance window, the dependence of the shift of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4dd7bf574d7668e47ee5069e738feae
https://doi.org/10.1134/s106193481003007x
https://doi.org/10.1134/s106193481003007x