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Investigation of gross α / β radioactivity levels in the surrounding environment of a pharmaceutical industrial park in north China in 2019 |
LI Man1, WANG Kai2, WANG Zhen1 |
1. Shandong Province Soil Pollution Prevention Center, Jinan 250017 China;
2. Shandong Nuclear and Radiation Safety Monitoring Center, Jinan 250017 China |
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Abstract Objective To understand the influence of a pharmaceutical industrial park in North China on the gross α / β radioactivity levels in the surrounding environment.Methods Environmental samples in the surrounding area of the Pharmaceutical Industry Park in 2019, including aerosols, sedimentation ash, well water and biological samples, etc., were collected and treated according to standard methods. FYFS~400X low background α and β radioactivity detector was used to detect the gross α/β radioactivity level.Results In 2019, the gross α/β radioactivity levels in aerosols in a single month were 795~978 μBq/m3 and 1111~1304 μBq/m3, respectively, and in the sedimentation ash were 29~34 Bq/m2 and 36~49 Bq/m2, respectively. They were 0.120~0.235 Bq/L and 0.126~0.343 Bq/L in well water, 0.077~0.149 Bq/kg and 100.2~219.4 Bq/kg in the vegetable, 0.171~0.581 Bq/kg and 154~296 Bq /kg in the chicken, 0.147~0.376 Bq/kg and 97~190 Bq/kg in pork, respectively.Conclusion The monthly gross α/β radioactivity levels in the surrounding environment of the pharmaceutical industrial park has seasonal variation in aerosol and sedimentation ash, but no significant change in well water and biological samples, which requires continuous dynamic monitoring
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Received: 05 December 2020
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