けい光X線分析法によるピッチ中の硫黄の定量

概要

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he content of sulfur in pitch was determined by a conventional X-ray fluorescence spectrometer with tungsten target X-ray tube and a portable X-ray fluorescence spectrometer with ^<55>Fe source (S-meter). The standard samples were prepared by diluting the pitch containing a known amount of sulfur(S=7.31 wt%) with the mixture of sulfur-free active carbon and corn starch. The samples were packed in an aluminum ring and then pressed. The analytical results obtained from the net intensity of SK_α in a conventional X-ray fluorescence spectrometer agreed well with those obtained by chemical analysis. The internal standard method with a scattered WL_α(n=2) line was inapplicable to reduce the matrix effects in the samples. The S-meter method was simple and rapid to operate and the time required for analysis was faster than compared with those of any other methods. The enhancement of the SK_α intensity by vanadium, titanium, and calcium were found. This effect is probably due to the overlapping of K_α of these elements with SK_α.
社団法人日本分析化学会の論文
1976-05-10