Indoor sources of air pollution, such as from cooking and cleaning, play a key role in indoor gas-phase chemistry. The focus of the impact of these activities on air quality tends to be indoors, with less attention given to the impact on air quality outside buildings. This study uses the INdoor CHEmical Model in Python (INCHEM-Py) and the Advanced Dispersion Modelling System (ADMS) to quantify the impact cooking and cleaning have on indoor and outdoor air quality for an idealised street of houses. INCHEM-Py has been developed to determine the concentrations of 106 indoor volatile organic compounds at the point they leave a building (defined as near-field concentrations). For a simulated 140 m long street with 10 equi-distant houses undertaking cooking and cleaning activities, the maximum downwind concentration of acetaldehyde increases from a background value of 0.1 ppb to 0.9 ppb post-cooking, whilst the maximum downwind chloroform concentrations increase from 1.2 to 6.2 ppt after cleaning. Although emissions to outdoors are higher when cooking and cleaning happen indoors, the contribution of these activities to total UK emissions of volatile organic compounds is low (less than 1%), and comprise about a quarter of those emitted from traffic across the UK. It is important to quantify these emissions, particularly as continued vehicle technology improvements lead to lower direct emissions outdoors, making indoor emissions relatively more important. Understanding how indoor pollution can affect outdoor environments, will allow better mitigation measures to be designed in the future that can take into account all sources of pollution that contribute to human exposure.

中文翻译：

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室内烹饪和清洁是城市环境中室外空气污染的一个来源

室内空气污染源，例如烹饪和清洁，在室内气相化学中发挥着关键作用。这些活动对空气质量的影响往往集中在室内，而较少关注对建筑物外空气质量的影响。本研究使用 Python 中的室内化学模型 (INCHEM-Py) 和高级分散建模系统 (ADMS) 来量化烹饪和清洁对理想房屋街道室内和室外空气质量的影响。 INCHEM-Py 旨在测定 106 种室内挥发性有机化合物离开建筑物时的浓度（定义为近场浓度）。对于模拟的 140 m 长街道，有 10 间等距房屋进行烹饪和清洁活动，烹饪后乙醛最大浓度从背景值 0.1 ppb 增加到 0.9 ppb，而顺风最大氯仿浓度从 1.2 增加到清洁后的 6.2 ppt。尽管在室内做饭和清洁时，室外排放量较高，但这些活动对英国挥发性有机化合物总排放量的贡献较低（低于 1%），约占英国交通排放量的四分之一。量化这些排放非常重要，特别是随着车辆技术的不断改进导致室外直接排放减少，从而使室内排放相对更加重要。了解室内污染如何影响室外环境，将有助于在未来设计更好的缓解措施，并考虑到导致人类暴露的所有污染源。