University of Pannonia, Institute of Radiochemistry and Radioecology, Veszprém, Hungary.
J Environ Radioact. 2013 Aug;122:70-8. doi: 10.1016/j.jenvrad.2013.02.007. Epub 2013 Apr 1.
Soil samples, from 70 points uniformly distributed over entire Slovenia, were analysed for (40)K, (232)Th and (226)Ra using gamma spectrometry, and for (234)U and (238)U using alpha spectrometry. The following ranges and averages of activity concentrations (Bq kg(-1)) were obtained: 98-2600 and 800 ± 520 for (40)K, 9-170 and 77 ± 33 for (232)Th, 12-270 and 63 ± 44 for (226)Ra, 12-84 and 34 ± 19 for (234)U, and 11-90 and 34 ± 19 for (238)U. With respect to lithology, the highest average values for (40)K and (232)Th were found at clastic sediments containing clay and for (226)Ra on carbonate rocks. Based on the measured activity concentrations, terrestrial gamma dose rates were calculated. The total dose rate ranged from 15 to 260 nGy h(-1), with arithmetic mean of 110 ± 49 nGy h(-1), being the highest over carbonates.
从分布在整个斯洛文尼亚的 70 个点采集土壤样本，使用伽马谱法分析（40）K、（232）Th 和（226）Ra 的活度浓度，并使用α谱法分析（234）U 和（238）U 的活度浓度。获得的活度浓度（Bq kg(-1)）范围和平均值如下：（40）K 为 98-2600 和 800±520，（232）Th 为 9-170 和 77±33，（226）Ra 为 12-270 和 63±44，（234）U 为 12-84 和 34±19，（238）U 为 11-90 和 34±19。就岩性而言，（40）K 和（232）Th 的最高平均值出现在含有粘土的碎屑沉积物中，（226）Ra 的最高平均值出现在碳酸盐岩中。根据测量的活度浓度，计算了陆地伽马剂量率。总剂量率范围从 15 到 260 nGy h(-1)，算术平均值为 110±49 nGy h(-1)，在碳酸盐岩中最高。
