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Atmosphere
Volume 13
Issue 11
10.3390/atmos13111821
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Article

Influencing Factors of Particulate Matter Concentration in the Metro Carriage and the Corresponding Inhalation Intake Estimation: A Field Measurement in Chengdu

by
Shenghao Huang
1,
Han Wang
1,2,
Dan Wu
3,
Rongjiang Ma
1,
Liangliang Sun
1 and
Mengsi Deng
1,*
1
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
2
Graduate School of Tangshan, Southwest Jiaotong University, Tangshan 063000, China
3
School of Architecture, Southwest Jiaotong University, Chengdu 610031, China
*
Author to whom correspondence should be addressed.
Atmosphere 2022, 13(11), 1821; https://doi.org/10.3390/atmos13111821
Submission received: 18 September 2022 / Revised: 24 October 2022 / Accepted: 27 October 2022 / Published: 2 November 2022
(This article belongs to the Special Issue Aerosols in Residential, School, and Vehicle Environments)
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Abstract

Urbanization promotes the development of the subway system, and the particulate matter (PM) concentrations inside have received increasing attention. This study first measured the dynamic PM2.5 and PM10 concentrations in a metro carriage in Chengdu and explored the dominant influencing factors. The personal inhalation intakes of different routes were evaluated. The results showed that the in-carriage PM2.5 and PM10 concentrations ranged from 11 to 74 μg/m3 (mean: 36.7 μg/m3) and 13 to 89 μg/m3 (mean: 40.1 μg/m3), respectively. When the train passed from the overground to underground, the in-carriage PM2.5 and PM10 concentrations increased by 30.4% and 32.9%, respectively. No specific linear relationship between passenger number and in-carriage PM concentrations was found. In-carriage PM concentrations decreased after the carriage doors were opened on the platforms. PM2.5 inhalation intakes ranged from 1.08 to 9.52, with a mean of 4.24 µg. For the passengers with the same age and sex, the average inhaled PM2.5 intake in the metro carriage on the route with more underground platforms was higher. This study not only revealed the PM characteristics in the Chengdu metro system for the first time, but also provided guidelines for reducing the in-carriage PM concentrations to build a healthier travel environment.
Keywords: metro carriage; particulate matter; driving condition; passenger number; carriage door; inhalation intake metro carriage; particulate matter; driving condition; passenger number; carriage door; inhalation intake

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MDPI and ACS Style

Huang, S.; Wang, H.; Wu, D.; Ma, R.; Sun, L.; Deng, M. Influencing Factors of Particulate Matter Concentration in the Metro Carriage and the Corresponding Inhalation Intake Estimation: A Field Measurement in Chengdu. Atmosphere 2022, 13, 1821. https://doi.org/10.3390/atmos13111821

AMA Style

Huang S, Wang H, Wu D, Ma R, Sun L, Deng M. Influencing Factors of Particulate Matter Concentration in the Metro Carriage and the Corresponding Inhalation Intake Estimation: A Field Measurement in Chengdu. Atmosphere. 2022; 13(11):1821. https://doi.org/10.3390/atmos13111821

Chicago/Turabian Style

Huang, Shenghao, Han Wang, Dan Wu, Rongjiang Ma, Liangliang Sun, and Mengsi Deng. 2022. "Influencing Factors of Particulate Matter Concentration in the Metro Carriage and the Corresponding Inhalation Intake Estimation: A Field Measurement in Chengdu" Atmosphere 13, no. 11: 1821. https://doi.org/10.3390/atmos13111821

APA Style

Huang, S., Wang, H., Wu, D., Ma, R., Sun, L., & Deng, M. (2022). Influencing Factors of Particulate Matter Concentration in the Metro Carriage and the Corresponding Inhalation Intake Estimation: A Field Measurement in Chengdu. Atmosphere, 13(11), 1821. https://doi.org/10.3390/atmos13111821

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