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Particulate matter generation in daily activities and removal effect by ventilation methods in residential building

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Abstract

Indoor particulate matter (PM) concentrations may be high due to indoor PM generation as well as PM introduced from the outdoors in residential buildings. In particular, as building airtight performance has been strengthened to reduce energy consumption, the indoor-generated PM has greatly influenced a person’s overall PM exposure. The indoor activities of residents may generate and resuspend PM, which in turn increases the indoor PM concentration. This study aims to analyze the characteristics of indoor PM generation by activities in a residential building and the removal effect of the ventilation methods. Field measurements were accomplished for indoor PM generation activities in real conditions, such as vacuum cleaning, cooking (fish and pork), air freshener spraying, and scented candle burning in a residential building. As a result, the PM concentration was the highest for broiling fish, with a concentration of 15.714 mg/m3 for PM10 and 13.679 mg/m3 for PM2.5. The decreasing order of the peak concentration for indoor activities was cooking, burning scented candles, vacuuming, and spraying air freshener. Additionally, the residual PM concentration exceeded the standard upper limit even 30 min after most of the PM generation activities ended. Especially, in the cooking activity, with the highest PM generation, PM could not be removed properly even when the range hood was operated. This is because the static pressure loss of the range hood in an air-tightened house and additional air supply or window opening can improve the PM removal performance of the range hood.

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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This work was supported by a National Research Foundation of Korea (NRF) grant (2019M3E7A1113080) funded by the Korean government (MSIT, MOE).

Funding

This study has received funding from the Ministry of Science and the ICT of the Korean government.

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The authors have made the following declarations about their contributions. Performing the experiments: Seunghwan Park and Younhee Choi. Data analysis: Sowoo Park. Writing—original draft and review and editing: Doosam Song and Sowoo Park.

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Correspondence to Doosam Song.

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Park, S., Song, D., Park, S. et al. Particulate matter generation in daily activities and removal effect by ventilation methods in residential building. Air Qual Atmos Health 14, 1665–1680 (2021). https://doi.org/10.1007/s11869-021-01047-1

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  • DOI: https://doi.org/10.1007/s11869-021-01047-1

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