Электронный каталог

Статья

Nguyen, H.N.
Effects of Solid–Liquid Partition Coefficients and Soil Properties on the Transfer of Natural Radionuclides (*2*3*8U, *2*2*6Ra, and *2*1*0Po) to Water Spinach (Lpomoea Aquatica) / H.N.Nguyen, Binh An Le. – Text : electronic // Applied and Environmental Soil Science. – 2026. – № 1. – P. 7768719. – URL: https://doi.org/10.1155/aess/7768719. – Bibliogr.: 57.

Solid–liquid partition coefficient (Kd) and soil-to-plant transfer factor (TF) are two important parameters in numerical models for predicting radionuclide availability in plants. They have implications for agricultural strategies in high-background radiation areas, where the activity concentrations of naturally occurring radionuclides (NORs) are significantly elevated. This study measured the Kd and TF values of &sup(238)U, &sup(226)Ra, and &sup(210)Po for various soil types, and the linkages between Kd, TF, and soil properties were analyzed. The objective of the study is to reveal a fact that applying a TF that does not actually provide real information on plant uptake, given that it takes into account the entirety of the soil in which the plant grows. The results show that &sup(238)U, &sup(226)Ra, and &sup(210)Po contribute a significant fraction to gross alpha in both soil and plant samples. The average Kd values of the radionuclides are in the order of [Kd of &sup(210)Po (Kd&sub(Po)) (1351 L kg&sup(−1)) < Kd of &sup(226)Ra (Kd&sub(Ra)) (2506 L kg&sup(−1)) < Kd of &sup(238)U (Kd&sub(U)) (3977 L kg&sup(−1))]. The average TF values of the radionuclides are in the order of [TF of gross alpha (TF&sub(alpha)) (0.081)] < [TF of &sup(226)Ra (TF&sub(Ra)) (0.169)] < [TF of &sup(210)Po (TF&sub(Po)) (0.173)] < [TF of &sup(238)U (TF&sub(U)) (0.192)]. The positive correlation of Kd–OM and the negative correlation of TF–OM indicate that OM strongly absorbs radionuclides in the soil and reduces their transfer to plants. These findings provide vital empirical parameters for refining predictive environmental models, which assume TF is a constant transfer. A correlation between Kd, TF, and OM content in soil has significant implications for agricultural strategy. It suggests that radionuclide activity concentrations in plants could be reduced by the application of OM.



Спец.(статьи,препринты) = С 413 г - Химические эффекты ядерных превращений. Химические формы стабилизации продуктов ядерных реакций. Радиационная химия
ОИЯИ = ОИЯИ (JINR)2026