建筑材料挥发性有机化合物的长期排放特征

IF 12.2 1区 环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL
Haimei Wang, Rui Zhang, Hui Kong, Keliang Wang, Lihua Sun, Xuefei Yu, Jing Zhao, Jianyin Xiong, Phuong T.M. Tran, Rajasekhar Balasubramanian
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引用次数: 0

摘要

室内建筑材料中挥发性有机化合物(VOCs)的长期排放行为在很大程度上取决于三个关键参数(初始浓度 C0、扩散系数 Dm 和分配系数 K)的值,这三个参数会随着时间的推移而改变排放情况。我们首次尝试通过模拟自然室内暴露的长期老化试验来定量探索参数的变化。在 431 天的时间里,我们获得了由一万个数据点组成的大量数据集。我们测定了三种人造板中六种挥发性有机化合物(甲醛、苯、甲苯、乙苯、邻二甲苯、对二甲苯)在不同老化周期内的参数。我们的研究结果表明,C0 随老化时间呈指数下降,而 Dm 和 K 仅随老化时间波动。根据所获得的相关性,我们提出了符合世界卫生组织标准的装修房屋通风时间。这些结果为预测室内挥发性有机化合物的长期浓度奠定了基础,这对于室内空气质量预评估至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Long-term emission characteristics of VOCs from building materials

Long-term emission characteristics of VOCs from building materials
Long-term emission behaviors of volatile organic compounds (VOCs) from indoor buildings materials heavily depend on the value of three key parameters (initial concentration C0, diffusion coefficient Dm, partition coefficient K) that govern emissions over time. We made the first attempt to quantitatively explore the variation of parameters through a long-lasting aging test that simulates natural indoor exposure. Over a span of 431 days, we obtained a substantial dataset consisting of ten thousand data points. The parameters of six VOCs (formaldehyde, benzene, toluene, ethylbenzene, o-xylene, p-m-xylene) from three kinds of wood-based boards with different aging intervals were determined. Our findings demonstrate that C0 decreases exponentially with aging time, while Dm and K merely fluctuate with it. With the obtained correlations, ventilation time for renovated house is proposed to meet the WHO standard. These results lay the groundwork for predicting long-term indoor VOC concentrations, which is crucial for indoor air quality pre-evaluation.
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来源期刊
Journal of Hazardous Materials
Journal of Hazardous Materials 工程技术-工程:环境
CiteScore
25.40
自引率
5.90%
发文量
3059
审稿时长
58 days
期刊介绍: The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.
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