From three different soil textures (clay, silt and sand), 36 soil and soybeans samples were accumulated from the agricultural area of EL-Mynia governorate in Upper Egypt, between (27°36'19.44″N; 30°30'14.14″ E) and (28°48'28.45″ N; 31°00'32.27″ E). Soil textures were prepared by particle size distribution through a pipette method. Its radioactivity measurements were performed with a NaI (Tl) and 3 × 3 inch crystal. The transfer factor (TF) of natural radionuclides from soil to soybeans was calculated. The value of the TF for 226Ra in clay soil ranges from 0.27 ± 0.03 to 0.42 ± 0.05, in sandy soil it ranges from 0.21 ± 0.02 to 0.57 ± 0.07 and in silt soil it ranges from 0.25 ± 0.03 to 0.53 ± 0.06. The TF for 232Th in clay soil ranges from 0.22 ± 0.03 to 0.90 ± 0.12, in sandy soil it ranges from 0.21 ± 0.03 to 1.00 ± 0.13, while in silt soil it ranges from 0.25 ± 0.03 to 0.88 ± 0.12. The TF for 40K in clay soil ranges from 0.95 ± 0.13 to 2.05 ± 0.29, in sandy soil it ranges from 1.21 ± 0.17 to 2.52 ± 0.35 and in silt soil it ranges and from 1.01 ± 0.14 to 1.46 ± 0.26.The results show that the committed effective dose from soybean consumption is between 54.5 and 103.4 μSv y-1 assuming consumption of 20 kg y-1.

中文翻译：

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不同土壤质地天然放射性核素的土壤-大豆转移因子及承诺有效剂量评估。


从三种不同的土壤质地（粘土、淤泥和沙子）中，从上埃及 EL-Mynia 省的农业区（27°36'19.44"N；30°30'14.14" E）收集了 36 个土壤和大豆样本。 ) 和 (28°48'28.45" N; 31°00'32.27" E)。通过移液管方法通过粒度分布制备土壤质地。其放射性测量是使用 NaI (Tl) 和 3 × 3 英寸晶体进行的。计算了天然放射性核素从土壤到大豆的转移因子（TF）。粘土中 226Ra 的 TF 值范围为 0.27 ± 0.03 至 0.42 ± 0.05，沙土中的范围为 0.21 ± 0.02 至 0.57 ± 0.07，淤泥土壤中的范围为 0.25 ± 0.03 至 0.53 ± 0.06。粘土中 232Th 的 TF 范围为 0.22 ± 0.03 至 0.90 ± 0.12，沙土中的 TF 范围为 0.21 ± 0.03 至 1.00 ± 0.13，而粉土中的 TF 范围为 0.25 ± 0.03 至 0.88 ± 0.12。粘土中 40K 的 TF 范围为 0.95 ± 0.13 至 2.05 ± 0.29，砂土中的 TF 范围为 1.21 ± 0.17 至 2.52 ± 0.35，淤泥土壤中的 TF 范围为 1.01 ± 0.14 至 1.46 ± 0.26。 结果表明：假设消费量为 20 kg y-1，大豆消费产生的承诺有效剂量在 54.5 至 103.4 μSv y-1 之间。