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<p>Twelve plant and corresponding soil samples were collected in twelve agricultural fields in Vietnam for analysis. The <sup>226</sup>Ra activity concentrations (AC) varied from 24.5 to 43.1&#xa0;Bq/kg (dry weight) in soil samples and 1.4–13.2&#xa0;Bq/kg (dry weight) in plant samples. For seven studied plants, the soil-to-plant transfer factors of radium (TF) varied from 0.032 to 0.439 depending on plant types and the physicochemical properties of the soil. Some relationships were found between <sup>226</sup>Ra TF and the properties of soil. TF positively correlated with clay content in soil (Pearson correlation coefficient (r) =  − 0.63) and organic matter (OM) in soil (r =  − 0.60). A negative correlation was found between TF and AC of <sup>226</sup>Ra in porewater of soil (r = 0.66).</p>

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Soil-to-plant transfer factors of radium for different types of plants as influenced by clay content, organic matter content and radium partition in the soil

  • 期刊论文

  • 发表日期：

    2025年1月30日

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  • Van Thang Nguyen,
  • Vu Ngoc Ba,
  • Lam Xuan Anh Dao,
  • Huynh Truc Phuong,
  • Nguyen Van Dong,
  • Cong Hao Le

摘要

Twelve plant and corresponding soil samples were collected in twelve agricultural fields in Vietnam for analysis. The 226Ra activity concentrations (AC) varied from 24.5 to 43.1 Bq/kg (dry weight) in soil samples and 1.4–13.2 Bq/kg (dry weight) in plant samples. For seven studied plants, the soil-to-plant transfer factors of radium (TF) varied from 0.032 to 0.439 depending on plant types and the physicochemical properties of the soil. Some relationships were found between 226Ra TF and the properties of soil. TF positively correlated with clay content in soil (Pearson correlation coefficient (r) =  − 0.63) and organic matter (OM) in soil (r =  − 0.60). A negative correlation was found between TF and AC of 226Ra in porewater of soil (r = 0.66).