| 摘 要： | In this work a method for determination of uranium enrichment in environmental samples was studied and the minimum detectable activities of ^235U in environmental samples （including soil, water, swipe） using HPGe γ-ray spectrometry were determined. Eq. （1） is used to calculate the enrichment of uranium in the samples. G was obtained through Eq. （1） or Eq. （2） by measuring a working standard or reference material in which the uranium enrichment is known. After determining the sample, the enrichment of uranium is calculated.
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