Natural radionuclides activity concentrations of ²²⁶Ra, ²²⁸Ra, and ⁴⁰K in soil and grass samples, statistical analysis of these radionuclides, and transfer factors (TFs) from soil to the grass were carried out from phosphate mining and processing sites in southern areas of Togo using gamma-ray spectrometry-based high-purity germanium (HPGe) detector. The average activity concentrations of ²²⁶Ra, ²²⁸Ra, and ⁴⁰K were found within the range usually measured worldwide. Statistical analysis was done by investigating the skewness, the kurtosis, and the density distribution of radionuclides in the study areas. Both skewness and kurtosis displayed that the activity concentrations of soil and grass samples in the discharge waste site (Kpémé) and mining site (Hahotoé) exhibited slightly positively skewed, negatively skewed, leptokurtic, and platykurtic distributions. The TFs for ²²⁶Ra, ²²⁸Ra, and ⁴⁰K from discharge waste soil to grass were evaluated. The average transfer factors of ²²⁶Ra, ²²⁸Ra, and ⁴⁰K in the phosphate processing area were found to be 0.16, 0.32, and 8.42, respectively. ²²⁶Ra and ²²⁸Ra TFs values were found to be within the limit of worldwide measure values, while that of ⁴⁰K was found to be larger than the values measured in other countries. The average TF value of 8.42 for ⁴⁰K was eight times higher than the average value of unity, showing its large intake by vegetables. The high TFs for ⁴⁰K could be explained by the extensive application of phosphate fertilizers to soils when growing vegetables.

土壤和草样中天然放射性核素的活度浓度为²²⁶ Ra、²²⁸ Ra 和⁴⁰ K，对这些放射性核素的统计分析以及从土壤到草的转移因子（TFs）是从南方地区的磷矿开采和加工场地进行的。多哥使用基于伽马射线光谱的高纯锗 (HPGe) 探测器。平均活性浓度为²²⁶ Ra、²²⁸ Ra 和⁴⁰K 是在全球范围内通常测量的范围内发现的。通过调查研究区放射性核素的偏度、峰度和密度分布进行统计分析。偏度和峰度均表明，排放废物场 (Kpémé) 和采矿场 (Hahotoé) 的土壤和草样品的活性浓度呈现出轻微的正偏斜、负偏斜、leptokurtic 和 platykurtic 分布。评估了从排放废土到草地的²²⁶ Ra、²²⁸ Ra 和⁴⁰ K的 TF 。磷酸盐加工区²²⁶ Ra、²²⁸ Ra 和⁴⁰ K的平均转移因子分别为 0.16、0.32 和 8.42。^{发现 226} Ra 和²²⁸ Ra TFs 值在全球测量值的范围内，而发现⁴⁰ K 的值大于其他国家的测量值。^40K的平均TF值为8.42，是unity平均值的8倍，说明其蔬菜摄入量大。⁴⁰ K的高 TF可以解释为在种植蔬菜时对土壤广泛施用磷肥。