Indoor distribution and personal exposure of cooking-generated PM2.5 in rural residences of China: A multizone model study

Shi, Shanshan; Yang, Junling; Liang, Yushu

doi:10.1007/s12273-023-0997-1

Cited by 5 publications

(1 citation statement)

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“…Second, the emissions from solid fuel combustion during cooking and heating were not considered in this study. Their significant effects have been investigated in previous studies. − Notably, solid fuel combustion mainly occurs in rural Chinese residences rather than in urban Chinese residences. Therefore, we believe that bias will not be factored into our findings for urban areas in China without considering solid fuel combustion.…”

Section: Resultsmentioning

confidence: 99%

Indoor Emissions Contributed the Majority of Ultrafine Particles in Chinese Urban Residences

Chen,

Zhao

2024

Environ. Sci. Technol.

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Ultrafine particle (UFP) pollution should be controlled to reduce its effects on health. The design of control measures is limited owing to the uncertainty of source contributions in Chinese residences, where indoor UFP pollution is more severe than in Western residences. Herein, a sourcespecific, time-dependent UFP concentration model was developed by applying an infiltration factor model incorporating coagulation effects. A Monte Carlo framework with the UFP concentration model was employed to estimate the probabilistic distribution of source contributions in Chinese residences. The input parameter distributions were determined based on our survey and previous studies. The annually averaged indoor UFP concentration was estimated at (2.75 ± 1.71) × 10 4 #/cm 3 , ranging from 2.35 × 10 3 to 1.27 × 10 5 #/cm 3 outside the kitchen, and at (5.48 ± 3.08) × 10 4 #/cm 3 , ranging from 2.90 × 10 3 to 1.94 × 10 5 #/cm 3 in the kitchen. Indoor sources contributed more to indoor UFPs, accounting for 61% in the nonkitchen and 80% in the kitchen, surpassing their contribution to indoor PM 2.5 in Chinese residences. Meanwhile, the indoor UFP emission contributions were higher than those in the United States, Canada, and Germany, owing to higher emissions from cooking and cigarette smoking. These results will aid in elucidating human exposure to UFPs and in designing more targeted control measures.

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