Real-time molecular characterization of air pollutants in a Hong Kong residence: Implication of indoor source emissions and heterogeneous chemistry

Xiaopu Lyu; Yunxi Huo; Jin Yang; Dawen Yao; Kaimin Li; Haoxian Lu; Yangzong Zeren; Hai Guo

Real-time molecular characterization of air pollutants in a Hong Kong residence: Implication of indoor source emissions and heterogeneous chemistry

Xiaopu Lyu
, Yunxi Huo
, Jin Yang
, Dawen Yao
, Kaimin Li
, Haoxian Lu
, Yangzong Zeren
, Hai Guo^*

^*Corresponding author for this work

Academy of Geography, Sociology and International Studies

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

Abstract

Due to the high health risks associated with indoor air pollutants and long-term exposure, indoor air quality has received increasing attention. We put emphasis on the molecular composition, source emissions, and chemical aging of air pollutants in a residence with designed activities mimicking ordinary Hong Kong homes. The indoor-to-outdoor ratios were higher than 1 for most of the primary air pollutants, due to emissions of indoor activities and indoor backgrounds (especially for aldehydes). Painting ranked first in aldehyde emissions, which also caused great enhancement of aromatics. Incense burning had the highest emissions of particle-phase organics, with vanillic acid and syringic acid as markers. We showed clear evidence of chemical aging of cooking emissions, giving a hint of indoor heterogeneous chemistry. This study highlights the value of organic molecules measured at high time resolutions in enhancing our knowledge on indoor air quality.

Original language	English
Title of host publication	Healthy Buildings 2023
Subtitle of host publication	Asia and Pacific Rim
Publisher	International Society of Indoor Air Quality and Climate
Pages	140-141
Number of pages	2
ISBN (Electronic)	9781713890850
Publication status	Published - 17 Jul 2023
Event	Healthy Buildings 2023: Asia and Pacific Rim - Tianjin East, China Duration: 17 Jul 2023 → 19 Jul 2023 https://www.hb2023-asia.org/index.html https://www.hb2023-asia.org/temp/main/download/HB2023%20Asia%20-%20Final%20program%20book.pdf (Program Book)

Publication series

Name	Healthy Buildings Proceedings: Asia and Pacific Rim

Conference

Conference	Healthy Buildings 2023: Asia and Pacific Rim
Country/Territory	China
City	Tianjin East
Period	17/07/23 → 19/07/23
Internet address	https://www.hb2023-asia.org/index.html https://www.hb2023-asia.org/temp/main/download/HB2023%20Asia%20-%20Final%20program%20book.pdf (Program Book)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 3 Good Health and Well-being

User-Defined Keywords

Indoor air quality
Indoor chemistry
Organic aerosol
Particulate matters
Volatile organic compounds

Cite this

Lyu, X., Huo, Y., Yang, J., Yao, D., Li, K., Lu, H., Zeren, Y., & Guo, H. (2023). Real-time molecular characterization of air pollutants in a Hong Kong residence: Implication of indoor source emissions and heterogeneous chemistry. In Healthy Buildings 2023: Asia and Pacific Rim (pp. 140-141). (Healthy Buildings Proceedings: Asia and Pacific Rim). International Society of Indoor Air Quality and Climate.

Lyu, Xiaopu ; Huo, Yunxi ; Yang, Jin et al. / Real-time molecular characterization of air pollutants in a Hong Kong residence : Implication of indoor source emissions and heterogeneous chemistry. Healthy Buildings 2023: Asia and Pacific Rim. International Society of Indoor Air Quality and Climate, 2023. pp. 140-141 (Healthy Buildings Proceedings: Asia and Pacific Rim).

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abstract = "Due to the high health risks associated with indoor air pollutants and long-term exposure, indoor air quality has received increasing attention. We put emphasis on the molecular composition, source emissions, and chemical aging of air pollutants in a residence with designed activities mimicking ordinary Hong Kong homes. The indoor-to-outdoor ratios were higher than 1 for most of the primary air pollutants, due to emissions of indoor activities and indoor backgrounds (especially for aldehydes). Painting ranked first in aldehyde emissions, which also caused great enhancement of aromatics. Incense burning had the highest emissions of particle-phase organics, with vanillic acid and syringic acid as markers. We showed clear evidence of chemical aging of cooking emissions, giving a hint of indoor heterogeneous chemistry. This study highlights the value of organic molecules measured at high time resolutions in enhancing our knowledge on indoor air quality.",

keywords = "Indoor air quality, Indoor chemistry, Organic aerosol, Particulate matters, Volatile organic compounds",

author = "Xiaopu Lyu and Yunxi Huo and Jin Yang and Dawen Yao and Kaimin Li and Haoxian Lu and Yangzong Zeren and Hai Guo",

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Lyu, X, Huo, Y, Yang, J, Yao, D, Li, K, Lu, H, Zeren, Y & Guo, H 2023, Real-time molecular characterization of air pollutants in a Hong Kong residence: Implication of indoor source emissions and heterogeneous chemistry. in Healthy Buildings 2023: Asia and Pacific Rim. Healthy Buildings Proceedings: Asia and Pacific Rim, International Society of Indoor Air Quality and Climate, pp. 140-141, Healthy Buildings 2023: Asia and Pacific Rim, Tianjin East, China, 17/07/23.

Real-time molecular characterization of air pollutants in a Hong Kong residence: Implication of indoor source emissions and heterogeneous chemistry. / Lyu, Xiaopu; Huo, Yunxi; Yang, Jin et al.
Healthy Buildings 2023: Asia and Pacific Rim. International Society of Indoor Air Quality and Climate, 2023. p. 140-141 (Healthy Buildings Proceedings: Asia and Pacific Rim).

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

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T2 - Healthy Buildings 2023: Asia and Pacific Rim

AU - Lyu, Xiaopu

AU - Huo, Yunxi

AU - Yang, Jin

AU - Yao, Dawen

AU - Li, Kaimin

AU - Lu, Haoxian

AU - Zeren, Yangzong

AU - Guo, Hai

PY - 2023/7/17

Y1 - 2023/7/17

N2 - Due to the high health risks associated with indoor air pollutants and long-term exposure, indoor air quality has received increasing attention. We put emphasis on the molecular composition, source emissions, and chemical aging of air pollutants in a residence with designed activities mimicking ordinary Hong Kong homes. The indoor-to-outdoor ratios were higher than 1 for most of the primary air pollutants, due to emissions of indoor activities and indoor backgrounds (especially for aldehydes). Painting ranked first in aldehyde emissions, which also caused great enhancement of aromatics. Incense burning had the highest emissions of particle-phase organics, with vanillic acid and syringic acid as markers. We showed clear evidence of chemical aging of cooking emissions, giving a hint of indoor heterogeneous chemistry. This study highlights the value of organic molecules measured at high time resolutions in enhancing our knowledge on indoor air quality.

AB - Due to the high health risks associated with indoor air pollutants and long-term exposure, indoor air quality has received increasing attention. We put emphasis on the molecular composition, source emissions, and chemical aging of air pollutants in a residence with designed activities mimicking ordinary Hong Kong homes. The indoor-to-outdoor ratios were higher than 1 for most of the primary air pollutants, due to emissions of indoor activities and indoor backgrounds (especially for aldehydes). Painting ranked first in aldehyde emissions, which also caused great enhancement of aromatics. Incense burning had the highest emissions of particle-phase organics, with vanillic acid and syringic acid as markers. We showed clear evidence of chemical aging of cooking emissions, giving a hint of indoor heterogeneous chemistry. This study highlights the value of organic molecules measured at high time resolutions in enhancing our knowledge on indoor air quality.

KW - Indoor air quality

KW - Indoor chemistry

KW - Organic aerosol

KW - Particulate matters

KW - Volatile organic compounds

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M3 - Conference proceeding

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T3 - Healthy Buildings Proceedings: Asia and Pacific Rim

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BT - Healthy Buildings 2023

PB - International Society of Indoor Air Quality and Climate

Y2 - 17 July 2023 through 19 July 2023

ER -

Lyu X, Huo Y, Yang J, Yao D, Li K, Lu H et al. Real-time molecular characterization of air pollutants in a Hong Kong residence: Implication of indoor source emissions and heterogeneous chemistry. In Healthy Buildings 2023: Asia and Pacific Rim. International Society of Indoor Air Quality and Climate. 2023. p. 140-141. (Healthy Buildings Proceedings: Asia and Pacific Rim).

Real-time molecular characterization of air pollutants in a Hong Kong residence: Implication of indoor source emissions and heterogeneous chemistry

Abstract

Publication series

Conference

UN SDGs

User-Defined Keywords

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