Simultaneous measurement of radon exhalation rate and CO2 flux based on accumulation chamber technique with a closed-loop system

IF 2.6 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Engineering and Technology Pub Date : 2025-07-23 DOI:10.1016/j.net.2025.103805

Haibo Yi, Chenxi Zu, Jiale Sun, Jiulin Wu, Huiying Li, Zhipeng Liu, Hongbo Xu, Shicheng Luo, Xianfa Mao, Xinyue Yang, Feng Xiao, Hongzhi Yuan, Yanliang Tan

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Abstract

Carbon dioxide is one of the most important greenhouse gases that contribute to global warming. Radon exhalation rate is an important factor in evaluating environmental radon levels. This paper proposes a method to simultaneously measure the radon exhalation rate and CO₂ flux on the same soil surface based on accumulation chamber technique. Simultaneous measurements of radon exhalation rate (J) and CO₂ flux (F) at the soil surface were made using a portable CO₂ gas analyzer and a RAD7, and the results were obtained by fitting sequences of experimentally measured radon and CO₂ concentrations using mathematical models from existing studies. The experimental results show that radon exhalation rate from the soil surface is significantly and positively correlated with CO₂ flux at the regional scale. The linear fitting results show that J = 7.2 × F, R² = 0.86. This simultaneous measurements help to compare and correlate the data and to reveal the potential connection between radon exhalation rate and CO₂ flux.

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基于闭环系统积累室技术的氡呼出率和CO2通量同时测量

二氧化碳是导致全球变暖的最重要的温室气体之一。氡呼出率是评价环境氡水平的一个重要因素。本文提出了一种基于积累室技术同时测量同一土壤表面氡呼出率和CO2通量的方法。利用便携式CO2气体分析仪和RAD7同时测量了土壤表面的氡呼出率(J)和CO2通量(F)，并利用现有研究的数学模型拟合实验测量的氡和CO2浓度序列得到结果。实验结果表明，在区域尺度上，土壤表层氡析出率与CO2通量呈显著正相关。线性拟合结果表明，J = 7.2 × F, R2 = 0.86。这种同时测量有助于比较和关联数据，并揭示氡排放率与二氧化碳通量之间的潜在联系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Technology 工程技术-核科学技术

CiteScore

4.80

自引率

7.40%

发文量

431

审稿时长

3.5 months

期刊介绍： Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development