室内风趋势随着加拿大两个城市的建筑法规变化而变化
Janet Gaskin1, Liang Grace Zhou1, Robert Stainforth2
1Construction Research Centre, National Research Council Canada, 1200 Montreal Road, Ottawa, K1A 0R6, Canada.
Journal of environmental radioactivity
|November 12, 2024
概括
哈利法克斯的新房在2011年建筑法规变更后显示室内子水平较高,而温尼伯没有显著变化. 这支持在新建房屋中采取更强有力的防范措施,以减少肺癌风险.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 建筑科学 建筑科学
背景情况:
- 是一种天然存在的放射性气体,是全球肺癌的第二大原因.
- 建筑规范旨在减轻与室内环境相关的健康风险,包括暴露.
- 了解代码更改对室内度的影响对于公共卫生至关重要.
研究的目的:
- 在2011年加拿大国家建筑法典通过之前和之后,评估哈利法克斯和温尼伯的室内风趋势.
- 确定与较新的住房开发中室内度相关的因素.
- 为住宅建筑中的防治措施提供政策信息.
主要方法:
- 在哈利法克斯和温尼伯的新住房开发项目中招募参与者.
- 免费阿尔法轨道探测器的分配,用于为期三个月的加热季节测量 (2021-2022).
- 对室内激素度的多变量后勤回归分析与施工期,房屋特征和位置相比.
主要成果:
- 2011年以后建造的哈利法克斯房屋显示,度升高的可能性几乎翻了一番 (OR 1.91).
- 在2011年后的温尼伯房屋中,没有观察到室内子的显著变化.
- 在两个城市 (OR 0.48哈利法克斯,OR 0.45温尼伯) 中,与地下室相比,主要/上层楼层的测量不太可能升高.
结论:
- 2011年国家建筑法则可能影响了哈利法克斯的室内水平,但不是温尼伯.
- 探测器的位置 (地下室与上层) 是测量结果的一个重要因素.
- 建议加强新建低层住宅中的防范措施,以减轻加拿大的肺癌风险.
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