Particulate pollution in an underground car park in Wuhan, China--颗粒学报PARTICUOLOGY

Li, Y., & Xiang, R. (2013). Particulate pollution in an underground car park in Wuhan, China. Particuology, 11(1), 94–98. https://doi.org/10.1016/j.partic.2012.06.010

Particulate pollution in an underground car park in Wuhan, China

Yaxuan Li, Rongbiao Xiang^*

School of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China

10.1016/j.partic.2012.06.010

Volume 11, Issue 1, February 2013, Pages 94-98

Received 25 October 2011, Revised 26 May 2012, Accepted 7 June 2012, Available online 2 November 2012.

E-mail: xiangrb@mail.hzau.edu.cn

Highlights

► PM pollution in the underground car park is serious.

► PM₁₀ pollution is worse at the exit than at the entrance.

► Re-suspension of soil dust is an important source of PM₁₀.

Abstract

Particulate matter (PM) pollution in an underground car park in Wuhan was investigated. Mass concentrations of PM₁₀ and PM_2.5were obtained using gravimetric method. Selected metal elements, such as Fe, Mn, Zn, Pb, and Cu in PM₁₀ samples, were determined using atomic absorption spectrometer (AAS). Beta attenuation method was applied to observe the hourly variation of PM₁₀ levels. Results show that average PM₁₀ concentrations at the entrance and at the exit were 101.3 μg/m³ and 234.4 μg/m³, respectively, and average PM_2.5 concentrations at the entrance and at the exit were 47.7 μg/m³ and 62.7 μg/m³, respectively. PM pollution was worse at the exit than at the entrance. Hourly PM₁₀ concentration was weakly correlated with traffic flow. Regarding element concentrations, the most enriched element in PM₁₀ samples was Fe. Re-suspension of soil dust at the exit is an important source of PM₁₀.

Graphical abstract

Keywords

Underground car park; PM₁₀; PM_2.5; Metal elements

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