室内氡浓度评估：上海某大学校园的实地研究

IF 7.1 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Building and Environment Pub Date : 2025-04-10 DOI:10.1016/j.buildenv.2025.112998

Xionghui Ma, Chunxiao Su, Ziyi Zhu, Zhijun Zou, Yuwei Dai, Chanjuan Sun, Haidong Wang

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引用次数: 0

摘要

在2019冠状病毒病大流行期间，人们越来越关注室内环境质量。氡是一种放射性气体，由土壤、岩石和建筑材料中镭的衰变产生，可在室内积聚，造成严重的健康风险，如肺癌。大学环境中，居住者在室内花费大量时间，特别容易受到长期氡暴露的影响。方法对上海市多所高校建筑室内氡浓度进行测定。2020年6月至2022年8月期间进行了实地调查。在宿舍和教学楼进行了连续的氡测量。环境因素包括室内空气温度和相对湿度。结果氡浓度受季节、楼层和测量时间的影响，夏季最高，楼层较低，通风条件较差。学生宿舍平均氡浓度为14.8±9.2 Bq/m³，教室平均氡浓度为12.6±6.7 Bq/m³，均低于国家安全限值，且低于疫情前水平。季节效应、楼层水平和测量时间是影响室内氡浓度的显著因素。结论本研究确定了影响大学校园室内氡浓度的主要因素。较低楼层的氡浓度仍然是建筑物中最高的。研究结果为开展校园环境特别是夏季环境氡精细化监测和风险评估提供了依据。

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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Assessing indoor radon concentration: Field study from a university campus in Shanghai

Background

With growing concern during the COVID-19 pandemic, indoor environmental quality has received significant attention. Radon, a radioactive gas produced from the decay of radium found in soil, rocks, and building materials, can accumulate indoors, posing serious health risks such as lung cancer. University environments, where occupants spend significant time indoors, are particularly susceptible to prolonged radon exposure.

Method

This study focused on the estimation of indoor radon concentrations from multiple university buildings in Shanghai. A field investigation was conducted between June 2020 and August 2022. Continuous radon measurements were conducted in the dormitories and classroom buildings. Environmental factors include indoor air temperature and relative humidity.

Results

Radon concentrations were influenced by season, floor level, and measurement period, with the highest concentrations recorded during summer and on lower floors due to reduced ventilation. The mean radon concentration in dormitories was 14.8 ± 9.2 Bq/m³, and in classrooms 12.6 ± 6.7 Bq/m³, both below national safety limits and lower than those in the pre-pandemic era. Seasonal effect, floor level, and time of measurement were the significant factors for indoor radon concentrations.

Conclusion

This study has identified the main factors that affect indoor radon concentration in university campus. The radon concentrations at the lower floor levels remain the highest in the building. The results provide evidence for conducting refined radon monitoring and risk assessment in campus environment, especially during the summer.

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来源期刊

Building and Environment 工程技术-工程：环境

CiteScore

12.50

自引率

23.00%

发文量

1130

审稿时长

27 days

期刊介绍： Building and Environment, an international journal, is dedicated to publishing original research papers, comprehensive review articles, editorials, and short communications in the fields of building science, urban physics, and human interaction with the indoor and outdoor built environment. The journal emphasizes innovative technologies and knowledge verified through measurement and analysis. It covers environmental performance across various spatial scales, from cities and communities to buildings and systems, fostering collaborative, multi-disciplinary research with broader significance.