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Radon concentrations in five Pennsylvania soils.

J W Luetzelschwab1, K L Helweick, K A Hurst

  • 1Dickinson College, Carlisle, PA 17013.

Health Physics
|February 1, 1989
PubMed
Summary

Radon (Rn) soil air concentration is influenced by soil type, water content, and compaction. These factors cause significant variations in radon levels, ranging from 20 to 1,000 kBq m-3 in Pennsylvania soils.

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Area of Science:

  • Environmental Science
  • Geochemistry
  • Soil Science

Background:

  • Radon (Rn) concentration in soil air is a critical factor in environmental radiation exposure.
  • Soil properties like water content, emanation rate, and interstitial air volume significantly influence Rn levels.

Purpose of the Study:

  • To investigate the factors affecting radon (Rn) concentration in interstitial soil air.
  • To determine the range of possible Rn concentrations in various Pennsylvania soils.

Main Methods:

  • Studied emanation characteristics and soil compaction for five distinct Pennsylvania soil types.
  • Calculated the range of potential radon (Rn) concentrations based on soil properties and water content.

Main Results:

  • Radon (Rn) emanation varies significantly with soil type and water content.
  • Interstitial air space, affected by compaction and water content, further influences Rn concentrations.
  • Calculated Rn concentrations in the studied soils range from approximately 20 kBq m-3 to nearly 1 MBq m-3.

Conclusions:

  • Soil type, water content, and compaction are key determinants of soil air radon (Rn) concentration.
  • Significant variability in Rn levels exists both between different soil types and within the same soil type.
  • Understanding these factors is crucial for assessing potential radon exposure risks from soils.

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