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<p>This study presents a assessment of <sup>137</sup>Cs activity concentrations in surface soils and food from the state of Acre, Western Amazon, Brazil, and soil-to-plant transfer factors (T<sub>F</sub>). Soil and food samples (common beans, bananas, cassava, and cassava flour) from six regions were analyzed by HPGe gamma spectrometry. T<sub>f</sub>values ranged from 0.02 (banana—Cruzeiro do Sul) to 1.88 (banana -Epitaciolandia). Significant relationships were observed between T<sub>F</sub> and soil parameters (pH, Al, Ca, K), reflecting the influence of soil parameters on radionuclide bioavailability. These findings contribute to the understanding of <sup>137</sup>Cs behavior in tropical agroecosystems and provide a regional baseline.</p>

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Soil-to-plant 137Cs transfer factors in Western Amazon, Brazil

  • 期刊论文

  • 发表日期：

    2026年2月5日

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  • A. N. S. Geber Filho,
  • A. Costa-Gonçalves,
  • M. V. Licínio

摘要

This study presents a assessment of 137Cs activity concentrations in surface soils and food from the state of Acre, Western Amazon, Brazil, and soil-to-plant transfer factors (TF). Soil and food samples (common beans, bananas, cassava, and cassava flour) from six regions were analyzed by HPGe gamma spectrometry. Tfvalues ranged from 0.02 (banana—Cruzeiro do Sul) to 1.88 (banana -Epitaciolandia). Significant relationships were observed between TF and soil parameters (pH, Al, Ca, K), reflecting the influence of soil parameters on radionuclide bioavailability. These findings contribute to the understanding of 137Cs behavior in tropical agroecosystems and provide a regional baseline.