Shengrong Zhang, Xin Jiang, Huijun Jin, Enbao Wang, Hu Zhang, Fengyu Wang
{"title":"Study on the response of radon gas release in permafrost areas to temperature changes.","authors":"Shengrong Zhang, Xin Jiang, Huijun Jin, Enbao Wang, Hu Zhang, Fengyu Wang","doi":"10.1007/s10653-025-02792-3","DOIUrl":null,"url":null,"abstract":"<p><p>A model of frozen soil radon release under thermal-hydro coupling was established and verified by experiments to evaluate the risk of soil radon release in cold regions aggravated by permafrost degradation under climate change. The model and experimental results show that during the warming process of frozen soil (- 30 °C to 0 °C), the soil radon concentration (< 20,000 Bq/m<sup>3</sup>) or radon exhalation rate (< 0.05 Bq/(m<sup>2</sup> s)) in some cold regions (e.g., Northeast China, Russia, Sweden, and Canada) is generally lower than the thresholds specified in China's Code for Indoor Environmental Pollution Control of Civil Building Engineering (GB 50325-2020). Consequently, additional protective measures are generally unnecessary in these areas. However, in a few regions (e.g., Norway) with high background levels of soil radium specific activity, permafrost degradation may cause their radon release levels to exceed the safety threshold, endangering human health. In addition, the model established in this study provides an effective tool for assessing the cumulative risk of radon concentration in confined spaces in cold regions. It can also predict the worst-case scenarios of radon exposure in poorly ventilated buildings, offering a scientific basis for developing radon risk warning and protection strategies in cold regions.</p>","PeriodicalId":11759,"journal":{"name":"Environmental Geochemistry and Health","volume":"47 11","pages":"468"},"PeriodicalIF":3.8000,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Geochemistry and Health","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s10653-025-02792-3","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
引用次数: 0
Abstract
A model of frozen soil radon release under thermal-hydro coupling was established and verified by experiments to evaluate the risk of soil radon release in cold regions aggravated by permafrost degradation under climate change. The model and experimental results show that during the warming process of frozen soil (- 30 °C to 0 °C), the soil radon concentration (< 20,000 Bq/m3) or radon exhalation rate (< 0.05 Bq/(m2 s)) in some cold regions (e.g., Northeast China, Russia, Sweden, and Canada) is generally lower than the thresholds specified in China's Code for Indoor Environmental Pollution Control of Civil Building Engineering (GB 50325-2020). Consequently, additional protective measures are generally unnecessary in these areas. However, in a few regions (e.g., Norway) with high background levels of soil radium specific activity, permafrost degradation may cause their radon release levels to exceed the safety threshold, endangering human health. In addition, the model established in this study provides an effective tool for assessing the cumulative risk of radon concentration in confined spaces in cold regions. It can also predict the worst-case scenarios of radon exposure in poorly ventilated buildings, offering a scientific basis for developing radon risk warning and protection strategies in cold regions.
期刊介绍：
Environmental Geochemistry and Health publishes original research papers and review papers across the broad field of environmental geochemistry. Environmental geochemistry and health establishes and explains links between the natural or disturbed chemical composition of the earth’s surface and the health of plants, animals and people.
Beneficial elements regulate or promote enzymatic and hormonal activity whereas other elements may be toxic. Bedrock geochemistry controls the composition of soil and hence that of water and vegetation. Environmental issues, such as pollution, arising from the extraction and use of mineral resources, are discussed. The effects of contaminants introduced into the earth’s geochemical systems are examined. Geochemical surveys of soil, water and plants show how major and trace elements are distributed geographically. Associated epidemiological studies reveal the possibility of causal links between the natural or disturbed geochemical environment and disease. Experimental research illuminates the nature or consequences of natural or disturbed geochemical processes.
The journal particularly welcomes novel research linking environmental geochemistry and health issues on such topics as: heavy metals (including mercury), persistent organic pollutants (POPs), and mixed chemicals emitted through human activities, such as uncontrolled recycling of electronic-waste; waste recycling; surface-atmospheric interaction processes (natural and anthropogenic emissions, vertical transport, deposition, and physical-chemical interaction) of gases and aerosols; phytoremediation/restoration of contaminated sites; food contamination and safety; environmental effects of medicines; effects and toxicity of mixed pollutants; speciation of heavy metals/metalloids; effects of mining; disturbed geochemistry from human behavior, natural or man-made hazards; particle and nanoparticle toxicology; risk and the vulnerability of populations, etc.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
