Akuo-Ko Esther Osei, Otoo Francis, Glover Eric Tetteh, Amponsem Eunice, Shahrokhi Amin, Csordás Anita, Kovács Tibor
Institute of Radiochemistry and Radioecology, University of Pannonia, Hungary.
Radiation Protection Institute, Ghana Atomic Energy Commission, Ghana.
Heliyon. 2024 Jul 17;10(14):e34705. doi: 10.1016/j.heliyon.2024.e34705. eCollection 2024 Jul 30.
The activity concentration of natural radionuclides, radon activity concentration, mass and area exhalation rates have been studied in soils from gold mining communities in Atiwa West district. The natural radionuclides were determined by gamma ray spectrometry method while radon concentrations were measured using CR-39 detectors. The mean activity concentrations were found to be 26.9 ± 1.7 Bq/kg, 57.5 ± 3.6 Bq/kg, 237.5 ± 17.6 Bq/kg and 560.0 ± 54 Bq/m for Ra-226, Th-232, K-40 and Rn-222 respectively. The evaluated mass exhalation rates ranged from 2.8 ± 0.3 to 6.5 ± 0.7 × 10 Bq/kg/h while the area exhalation rates were from 0.8 ± 0.09 to 2.0 ± 0.21 × 10 Bq/m/h. Some mining and farming areas recorded high exhalation rates indicating that the use of soils as building materials from such areas could pose a level of radiation hazard to the population. The evaluated radiological risks were below reference levels. A good linear correlation was observed between Ra-226 and Rn-222 activity concentrations and in the investigated soils. The Pearson correlation coefficient, cluster analysis and principal component analysis were used to study the relationship between the determined parameters of the study.
对阿蒂瓦西区金矿开采社区土壤中的天然放射性核素活度浓度、氡活度浓度、质量和面积析出率进行了研究。天然放射性核素采用伽马射线能谱法测定，氡浓度使用CR - 39探测器测量。结果发现，镭 - 226、钍 - 232、钾 - 40和氡 - 222的平均活度浓度分别为26.9±1.7 Bq/kg、57.5±3.6 Bq/kg、237.5±17.6 Bq/kg和560.0±54 Bq/m。评估的质量析出率范围为2.8±0.3至6.5±0.7×10 Bq/kg/h，面积析出率为0.8±0.09至2.0±0.21×10 Bq/m/h。一些采矿和农业区域记录到较高的析出率，这表明使用这些区域的土壤作为建筑材料可能会对居民造成一定程度的辐射危害。评估的放射风险低于参考水平。在镭 - 226和氡 - 222活度浓度之间以及在所研究的土壤中观察到良好的线性相关性。使用皮尔逊相关系数、聚类分析和主成分分析来研究本研究确定参数之间的关系。
