抄録
The content of uranium in the composite adsorbent was determined by X-ray fluorescence spectrometry. 30 mg of sample was weighed into a sample holder which had been made of polyethylene for small amount of sample. The x-ray intensity of ULα1 (26.14°) was measured by fixedtime method, without preparing a brlquette. When the concentration of uranium was in the range of 0.1-4mg/g, the X-ray intensity of ULα1 and the content of uranium indicated a calibration curve of a good straight line. The variation coefficients were 2.2 and 2.4% for the standard samples containing 0.5 and 1 mg of uranium in 1 g of the adsorbent, respectively.
Titanium or zinc composing the composite adsorbent showed absorption effect for UL line. The X-ray intensity was corrected for the absorption effect by the concentration of the element deter-mined by X-ray fluorescence spectrometry.
The diverse elements from sea water were found not to affect the determination. The time required for the analysis of one sample was less than 15 minutes. The results of this method were consistent with that of a fluorometry within 10% error.
