Zobrazeno 1 - 10
of 12
pro vyhledávání: '"T. N. Gunicheva"'
Autor:
T. N. Gunicheva
Publikováno v:
X-Ray Spectrometry. 39:22-27
The paper reports application of X-ray fluorescence (XRF) procedure to determine the contents of 17 elements (Na, Mg, Al, Si, P, S, Cl, K, Ca, Mn, Fe, Ni, Cu, Zn, Rb, Sr, and Zr) in a dry residue of cow milk. The main advantages of this procedure imp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7965b6c514d3189b9e9ce068df4dce38
https://doi.org/10.1002/xrs.1225
https://doi.org/10.1002/xrs.1225
Autor:
A. L. Finkelshtein, T. N. Gunicheva
Publikováno v:
Inorganic Materials. 44:1567-1571
The dependence of intensity of x-ray fluorescence on particle size for powdered and pulplike media is described using a general analytical expression. The expression is obtained for a model of a powder medium consisting of particles of various sizes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea8f95115d862adb5cfe644040e79962
https://doi.org/10.1134/s0020168508140136
https://doi.org/10.1134/s0020168508140136
Autor:
E. V. Chuparina, T. N. Gunicheva
Publikováno v:
Journal of Analytical Chemistry. 58:856-861
Possible matrix effects in the direct x-ray fluorescence determination of Na, Mg, Al, Si, P, K, Ca, Mn, Fe, S, Sr, and Cl in powdered plant materials were considered; their contributions were evaluated, and dominant effects were estimated that should
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f0bcd7d9765a6fce4bf617da900fcf5
https://doi.org/10.1023/a:1025689202055
https://doi.org/10.1023/a:1025689202055
Autor:
T. S. Aisueva, T. N. Gunicheva
Publikováno v:
Journal of Analytical Chemistry. 58:830-835
Using the direct x-ray fluorescence determination of Ba, Sr, Zr, and Zn in soils as an example, it was shown that the nature of the test material as well as the biogeochemical properties of the analytes should be taken into account for improving the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc4d9d9bdf7d4509cd3ca3066db15ca3
https://doi.org/10.1023/a:1025629016168
https://doi.org/10.1023/a:1025629016168
Publikováno v:
X-Ray Spectrometry. 24:187-192
A procedure for the non-destructive x-ray fluorescence (XRF) spectrometric determination of major and some minor elements in soils, marine sediments and friable deposits is proposed. It does not require any preliminary treatment of the sample except
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5908287e6fb6ec5f26d6d06025d06cc0
https://doi.org/10.1002/xrs.1300240408
https://doi.org/10.1002/xrs.1300240408
Publikováno v:
X-Ray Spectrometry. 24:177-186
A Monte Carlo simulation model for the computation of the x-ray fluorescence intensity from heterogeneous substances is proposed. The geometric presentation used and its simulation provide an adequate description of the experimental data for slurries
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13d3e19fa6b4d5ec0f78b5f52387801e
https://doi.org/10.1002/xrs.1300240407
https://doi.org/10.1002/xrs.1300240407
Publikováno v:
X-Ray Spectrometry. 21:287-292
Analytical equations for calculating x-ray fluorescence and scattered primary radiation intensities in x-ray fluorescence analysis of slurries and slurry-like materials are proposed. These equations are derived for the slurry model, in which the spac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bc4cf339aa9837da3bf63671f7e02f7
https://doi.org/10.1002/xrs.1300210606
https://doi.org/10.1002/xrs.1300210606
Publikováno v:
X-Ray Spectrometry. 21:253-258
A background correction procedure is described for multi-channel x-ray fluorescence spectrometers/quantometers with spectrometric channels of a fixed type. The background intensities are measured for a special background sample. Background intensitie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5b95bd2684aa8e5d5a714da2bcc71d1
https://doi.org/10.1002/xrs.1300210511
https://doi.org/10.1002/xrs.1300210511
Publikováno v:
X-Ray Spectrometry. 21:149-153
The accuracy of the results of steel x-ray fluorescence (XRF) analysis using certain computation algorithms, differing in the way in which they consider the dependence of α coefficients on sample composition, was compared by means of the determinati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0bde6f45a67411cee459092694d61d4d
https://doi.org/10.1002/xrs.1300210310
https://doi.org/10.1002/xrs.1300210310
Publikováno v:
X-Ray Spectrometry. 21:69-75
Improvements to the fundamental parameter algorithm of x-ray fluorescence analysis are considered. The algorithm involves the following effects: primary and secondary x-ray absorption, secondary and tertiary fluorescence, excitation by scattered x-ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba6ddb4a52cd36a73cac3362df2f0b54
https://doi.org/10.1002/xrs.1300210205
https://doi.org/10.1002/xrs.1300210205