This study evaluated the correlation between radioactivity concentrations and soil properties, and determined the total annual effective dose near an underground geologic repository for transuranic wastes. Soil samples were collected from two historical monitoring areas (Near Field and Cactus Flats). Alpha-particle spectrometry was used for the analysis of ²⁴¹Am, ^239+240Pu and ²³⁸U, while ¹³⁷Cs, ⁴⁰K, ²³²Th and ²²⁶Ra were detected by gamma ray spectrometry. Higher radioactivity concentrations and stronger positive correlations between radioactivity concentrations and soil properties were obtained in Cactus Flats compared to Near Field. The total annual effective dose was lower than the recommended limit of 1 mSv y^− 1.

本研究评估了放射性浓度与土壤特性之间的相关性，并确定了超铀废物地下地质处置库附近的年总有效剂量。从两个历史监测区域（近场和仙人掌平原）收集土壤样本。阿尔法粒子光谱法用于分析²⁴¹ Am、^239+240 Pu 和²³⁸ U，而¹³⁷ Cs、⁴⁰ K、²³² Th 和²²⁶Ra通过伽马射线光谱法检测。与近场相比，仙人掌平原的放射性浓度更高，放射性浓度与土壤性质之间的正相关性更强。年总有效剂量低于 1 mSv y ^{- 1}的推荐限值。