X線廻折による石英の定量法

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The writers attempted the quantitative determination of quartz in Iwaki clay and calcined lungs of silicosis patients by means of Geiger-counter X-ray spectrometer in two different ways. In the first place, they followed the technique proposed by Clark and Reynolds, with some modifications for the use of Geiger-counter X-ray spectrometer in order to make an accurate intensity measurements. In the second place, they adopted a method newly devised by themselves, in which the amounts of quartz (x%) were determined from the following equation; x=100⋅a⋅(IQ/IF)1/100{(IQ/IF)2-(IQ/IF)1}+a(IQ/IF)2(%)a: the amount of quartz further added to the original material.(IQ/IF)1: the intensity ratio between quartz and fluorite in a specimen in which constant amount of fluorite was added to the original material.(IQ/IF)2: the intenity ratio between quartz and fluorite in a specimen in which known amount of quartz (a%) and fluorite were added to the original material.Fair similarities were seen between the values obtained by these two methods.Geiger-counter X-ray spectrometer used for this study was constructed by the present writers themselves.
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