نتایج جستجو برای: X-ray diffractometry

تعداد نتایج: 664824  

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1987

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2011
Tomoharu Asahi Shinji Kobayashi Kenichi Nakayama Takayuki Konya Go Fujinawa Toshihiro Nakamura

A standard material containing chrysotile asbestos for the validation of x-ray diffractometric quantitation was developed using an asbestos-containing building material i.e., perlite board. The board as the base material was crushed, pulverized, and homogenized. The homogeneity of the powder of perlite board was estimated by analysis of variance. The diffraction intensity values of the crystall...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 1987

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2008

2008

The XDD beamline (http://ssls.nus.edu.sg/facility/beamlines/xdd/xdd.htm) at SSLS delivers a tunable monochromatized photon source with high resolution in a wide energy range (2.3-10 keV). This hard x-ray light source is ideal for diffractometry, fluorescence detection and absorption spectroscopy, especially the study of XAFS (x-ray absorption fine structure) and XANES ( X-ray Absorption Near Ed...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2002

Journal: :Journal of Applied Sciences and Environmental Management 2010

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2010
Tomoharu Asahi Takaomi Matsudaira Shinji Kobayashi Kenichi Nakayama Toshihiro Nakamura

X-ray powder diffractometry/Rietveld refinement was employed to estimate the purity of several chrysotile powders for calibrating standards. α-Corundum powder was mixed into each chrysotile sample as an internal standard. X-ray diffractometry was performed on these mixtures, and the mass fractions of amorphous and impurity phase content were calculated using Rietveld refinement. The chrysotile ...

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