Zobrazeno 1 - 10
of 83
pro vyhledávání: '"V. N. Korolyuk"'
Publikováno v:
LITHOSPHERE (Russia). 21:912-930
Research subject. The distribution patterns of rare earth elements (REE), as well as Y and Th, in the grains of polychromous zircons from the restitogenic ultramafic rocks of the Shaman massif (Eastern Transbaikalia). This massif is a steeply incline
Autor:
V. N. Korolyuk, L.N. Pokhilenko
Publikováno v:
Russian Geology and Geophysics. 57:1750-1758
A method for calculation of the maximum permissible (for thermometry) error of analyte determination by trace elements is presented based on the example of the De Hoog–Gall Al-in-olivine thermometer. Analytical conditions ensuring an acceptable ana
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
Autor:
V. N. Korolyuk
Publikováno v:
Journal of Analytical Chemistry. 69:1066-1072
An equation for the calculation of the detection limit clim is presented. Relations for the limit of detection clim, limit of determination cmin, and relative error V of analyte determination are derived. The performance characteristics of lead deter
Autor:
L. N. Pokhilenko, V. N. Korolyuk
Publikováno v:
X-Ray Spectrometry. 43:353-358
Evaluation of the error of computations using analysis results requires knowing the error of determining the analyte. The necessity of limiting the error of computations conditions the value of the permissible error of determining the concentration:
Autor:
V. N. Korolyuk, E. N. Nigmatulina
Publikováno v:
Journal of Analytical Chemistry. 68:781-787
Conditions of recording the Pb Mα line and the background in monazite age dating are studied on an example of simple synthetic rare-earth phosphates. By selecting cutoff thresholds, pulses were discriminated from the radiation superimposing on the a
Publikováno v:
X-Ray Spectrometry. 41:338-341
Relative intensities of X-ray lines for various reflection orders are measured using a JXA-8100 microprobe analyzer. Spectra obtained using standard analyzing crystals LiF, PET, TAP, LDE1, and LDE2 are studied. We observe and explain specific feature
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
Publikováno v:
Doklady Earth Sciences. 434:1330-1336
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