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<p>The concentration of <sup>222</sup>Rn in groundwater samples was analysed in the Gogi region of Yadgiri district, Karnataka, South India, an area known for its uranium mineralisation and for future mining activities. A total of 210 samples were analysed from various zones, with Gogi as the common centre for all study zones. The <sup>222</sup>Rn bubbling method was employed to determine the activity concentration of <sup>222</sup>Rn, which varied from 0.6 to 275.0&#xa0;Bq/L. The concentration of <sup>222</sup>Rn in most groundwater samples was comparable to levels observed in other parts of India and worldwide. The observed <sup>222</sup>Rn activity concentration for the core zone was found to be higher than that in the other two zones. Only 10% of the samples exhibited a <sup>222</sup>Rn concentration exceeding the safe threshold of 100&#xa0;Bq/L, as suggested by the European Commission (EC), WHO, and UNSCEAR. The median value of annual effective dose to adults from inhalation and ingestion of <sup>222</sup>Rn in groundwater was 141.4 μSv/y. This study is significant for public health, as it highlights the need to understand radiation doses from <sup>222</sup>Rn exposure.</p> Graphical Abstract <p></p>

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Radon in groundwater and associated dose to the public in a uranium-mineralised region of India

  • 期刊论文

  • 发表日期：

    2026年5月13日

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  • I. Yashodhara,
  • K. Sudeep Kumara,
  • K. Mahendra,
  • N. Karunakara

摘要

The concentration of 222Rn in groundwater samples was analysed in the Gogi region of Yadgiri district, Karnataka, South India, an area known for its uranium mineralisation and for future mining activities. A total of 210 samples were analysed from various zones, with Gogi as the common centre for all study zones. The 222Rn bubbling method was employed to determine the activity concentration of 222Rn, which varied from 0.6 to 275.0 Bq/L. The concentration of 222Rn in most groundwater samples was comparable to levels observed in other parts of India and worldwide. The observed 222Rn activity concentration for the core zone was found to be higher than that in the other two zones. Only 10% of the samples exhibited a 222Rn concentration exceeding the safe threshold of 100 Bq/L, as suggested by the European Commission (EC), WHO, and UNSCEAR. The median value of annual effective dose to adults from inhalation and ingestion of 222Rn in groundwater was 141.4 μSv/y. This study is significant for public health, as it highlights the need to understand radiation doses from 222Rn exposure.

Graphical Abstract