Abstract：
The aim of the study is a thorough investigation of the radioactivity level in soils of the town of Bitola (Macedonia) and its environs. Topsoil samples collected from 58 locations within a 5 × 5 km grid were analysed. Serving as a screening, gross alpha and beta activity measurements were performed using gas-flow proportional counter. Gamma-spectrometric measurements revealed the presence of three natural (40K, 226Ra, 232Th) and one artificial radionuclide (137Cs) in the samples. The activity concentrations of these radionuclides were consistent with the results of similar studies in neighbouring areas. Spatial distribution maps and factor analyses have revealed that the activity concentrations of the natural radionuclides are strongly influenced by geology and have no significant influence from human activities. A correlation of 137Cs activity concentrations with terrain elevation was also observed. The aim of the study is a thorough investigation of the radioactivity level in soils of the town of Bitola (Macedonia) and its environs. Topsoil samples collected from 58 locations within a 5 × 5 km grid were analysed. Serving as a screening, gross alpha and beta activity measurements were performed using gas-flow proportional counter. Gamma-spectrometric measurements revealed the presence of three natural (40K, 226Ra, 232Th) and one artificial radionuclide (137Cs) in the samples. The activity concentrations of these radionuclides were consistent with the results of similar studies in neighbouring areas. Spatial distribution maps and factor analyses have revealed that the activity concentrations of the natural radionuclides are strongly influenced by geology and have no significant influence from human activities. A correlation of 137Cs activity concentrations with terrain elevation was also observed.
摘要：
这项研究的目的是彻底调查比托拉（马其顿）镇及其周边地区土壤中的放射性水平。分析了从5×5km网格内的58个位置收集的表土样品。作为一个筛选，使用气体流量比例计数器进行总α和β活性测量.伽玛光谱测量显示存在三种天然（40K，226Ra,232Th）和样品中的一种人工放射性核素（137Cs）。这些放射性核素的活性浓度与邻近地区类似研究的结果一致。空间分布图和因子分析表明，天然放射性核素的活动浓度受地质影响很大，而人类活动没有显着影响。还观察到137Cs活性浓度与地形海拔的相关性。这项研究的目的是彻底调查比托拉（马其顿）镇及其周边地区土壤中的放射性水平。分析了从5×5km网格内的58个位置收集的表土样品。作为一个筛选，使用气体流量比例计数器进行总α和β活性测量.伽玛光谱测量显示存在三种天然（40K，226Ra,232Th）和样品中的一种人工放射性核素（137Cs）。这些放射性核素的活性浓度与邻近地区类似研究的结果一致。空间分布图和因子分析表明，天然放射性核素的活动浓度受地质影响很大，而人类活动没有显着影响。还观察到137Cs活性浓度与地形海拔的相关性。
