Correlation Between \(^{137}\text{Cs}\) and \(^{40}\text{K}\) Concentration in Soil and Tea Tree in Luong My Farm, Hoa Binh Province, Vietnam

Abstract

In this work, the correlation between ¹³⁷Cs and ⁴⁰K concentration in tea tree and soil in Luong My farm, Tan Thanh district, Luong Son commune, Hoa Binh province was experimentally investigated. The measurements were carried out using gamma spectroscopy with high purity germanium detector HPGe. The results showed that ⁴⁰K is uniformly distributed in the soil depth while ¹³⁷Cs is mainly located in 10 cm of the soil surface. Soil-plant transfer factor (TF) for ⁴⁰K varies in the range of 0.491 to 0.623 and that of ¹³⁷Cs is in range of 0.384 to 0.510. The concentration of these two radionuclides in tree parts is opposite to each other, while ⁴⁰K is concentrated in the leave, ¹³⁷Cs is mainly found in the root.