{"id":5159,"date":"2025-04-25T17:33:00","date_gmt":"2025-04-25T14:33:00","guid":{"rendered":"https:\/\/health.gov.ua\/en\/?page_id=5159"},"modified":"2025-04-25T17:44:10","modified_gmt":"2025-04-25T14:44:10","slug":"25-04-2025-a-new-publication-of-the-laboratory-of-radiation-monitoring-specialists-on-the-radioactive-pollution-of-groundwater-in-the-chornobyl-exclusion-zone","status":"publish","type":"page","link":"https:\/\/health.gov.ua\/en\/structure\/research-departments\/laboratory-of-radiation-monitoring\/25-04-2025-a-new-publication-of-the-laboratory-of-radiation-monitoring-specialists-on-the-radioactive-pollution-of-groundwater-in-the-chornobyl-exclusion-zone\/","title":{"rendered":"A new publication of the Laboratory of Radiation Monitoring specialists on radioactive contamination of groundwater in the Chornobyl Exclusion Zone (date of publication on the website 25.04.2025)"},"content":{"rendered":"\n

A new publication of the Laboratory of Radiation Monitoring specialists on radioactive contamination of groundwater in the Chornobyl Exclusion Zone<\/h4>\n\n\n\n

<\/p>\n\n\n

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<\/p>\n\n\n\n

Specialists of the Laboratory of Radiation Monitoring of the State Institution \u00abMarzieiev Institute for Public Health of the National Academy of Medical Sciences of Ukraine\u00bb prepared a scientific publication in cooperation with specialists of the Institute for Nuclear Power Plant Safety of the National Academy of Sciences of Ukraine \u00abREGARDING THE POSSIBLE IMPACT OF FOREST FIRES ON THE RADIOACTIVE POLLUTION OF GROUNDWATER IN THE CHORNOBYL EXCLUSION ZONE<\/strong>.\u00bb<\/p>\n\n\n\n

Reference: Panasiuk, M., Buzynnyi, M., Kirieiev, S. et al. Regarding the possible impact of forest fires on the radioactive pollution of groundwater in the chornobyl exclusion zone. Sci Rep 15, 13910 (2025). https:\/\/doi.org\/10.1038\/s41598-025-99095-5<\/a><\/strong><\/p>\n\n\n\n

Summary of the article.<\/strong><\/p>\n\n\n\n

Wood contamination in the Chornobyl Exclusion Zone (CEZ) with 137<\/sup>Cs and 90<\/sup>Sr reaches tens of kBq\/kg. Fires are natural disasters that fundamentally alter the forest ecosystem. The largest fires in the CEZ occurred in 2020 at the temporary radioactive waste storage facility (PTLRW) known as \u201cRed Forest\u201d, where the peak of 90<\/sup>Sr activity in wood was recorded. Subsequently, the level of 90<\/sup>Sr in groundwater samples from observation wells in this section of the CEZ increased by 2 to 60 times, rising from approximately 2 to about 180 Bq\/l beginning in late 2022. The laboratory experiment utilized typical pinewood and forest litter samples. Laboratory studies show that burning 1 kg of dry pinewood produces approximately 2.8 g of ash, with a concentration of 90<\/sup>Sr in the ash that is approximately 360 times higher. The specific activity of 90<\/sup>Sr in the ash from six wood samples ranged from 160 to 3400 kBq\/kg. Under suitable experimental conditions, the specific activity of 90<\/sup>Sr in the leachate samples ranged from 0.5 to 0.72 kBq\/L. The proportion of 90<\/sup>Sr leached during the experiment varied from 12 to 33% for wood ash and 10.8\u201313.2% for forest litter ash. The complete combustion of 10% of the wood in the burn site area of the PTLRW \u201cRed Forest\u201d CEZ, influenced by a two-year rainfall volume, releases a secondary source of 90<\/sup>Sr available for migration with groundwater, with an intensity of at least 0.69 GBq\/ha or more than 17 GBq\/ha in the trench burial area of \u201cRed Forest\u201d. Under these conditions, this source can reach 38 TBq in the 550 km\u00b2 burn site area. The minerals in wood ash are easily washed away by water, leading to increased groundwater mineralization and higher ionic strength. This, in turn, reduces the soil\u2019s sorption capacity and enhances the migration capacity of 90<\/sup>Sr in the aquifer. The transformation of wood and forest litter into ash due to a forest fire concentrates radioactivity in it, which lies on the soil surface, making it vulnerable to rapid leaching by atmospheric precipitation. As a result, this radioactivity can become a significant local source of radioactive contamination of surface and groundwater, which requires updating the radioactivity monitoring regulations in the relevant observation wells of the CEZ.<\/p>\n\n\n\n

Keywords:<\/strong> Forest fires, Wood, Forest litter, Ash, Groundwater, 90<\/sup>Sr, Pollution sources, Mineralization, Ionic strength of the solution.<\/p>\n\n\n\n

Head of the Laboratory of Radiation Monitoring<\/strong><\/p>\n\n\n\n

Doctor of Biological Sciences Mykhailo Buzynnyi<\/strong><\/p>\n\n\n\n

(date of publication on the website 25.04.2025)<\/p>\n","protected":false},"excerpt":{"rendered":"

A new publication of the Laboratory of Radiation Monitoring specialists on radioactive contamination of groundwater in the Chornobyl Exclusion Zone Specialists of the Laboratory of Radiation Monitoring of the State Institution \u00abMarzieiev Institute for Public Health of the National Academy of Medical Sciences of Ukraine\u00bb prepared a scientific publication in cooperation with specialists of the … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1293,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ep_exclude_from_search":false,"footnotes":""},"class_list":["post-5159","page","type-page","status-publish"],"yoast_head":"\nA new publication of the Laboratory of Radiation Monitoring specialists on radioactive contamination of groundwater in the Chornobyl Exclusion Zone (date of publication on the website 25.04.2025) - State Institution \u00abMarzieiev Institute for Public Health of the National Academy of Medical 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