Quantification of tire wear particles in road dust from industrial and residential areas in Seoul, Korea

Jong-Sang Youn; Young-Min Kim; Muhammad Zain Siddiqui; Atsushi Watanabe; Sehyun Han; Sangmin Jeong; Yong-Won Jung; Ki-Joon Jeon

doi:10.1016/j.scitotenv.2021.147177

Quantification of tire wear particles in road dust from industrial and residential areas in Seoul, Korea

Sci Total Environ. 2021 Aug 25:784:147177. doi: 10.1016/j.scitotenv.2021.147177. Epub 2021 Apr 18.

Authors

Jong-Sang Youn¹, Young-Min Kim², Muhammad Zain Siddiqui³, Atsushi Watanabe⁴, Sehyun Han⁵, Sangmin Jeong⁵, Yong-Won Jung⁵, Ki-Joon Jeon⁶

Affiliations

¹ Department of Environmental Engineering, The Catholic University of Korea, Bucheon 14662, Republic of Korea.
² Department of Environmental Engineering, Daegu University, Gyeongsan 38453, Republic of Korea.
³ Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon 24252, Republic of Korea.
⁴ Frontier Laboratories Ltd., Koriyama, Fukushima 963-8862, Japan.
⁵ Department of Environmental Engineering, Inha University, Incheon 22212, Republic of Korea.
⁶ Department of Environmental Engineering, Inha University, Incheon 22212, Republic of Korea; Program in Environmental and Polymer Engineering, Inha University, Incheon 22212, Republic of Korea. Electronic address: kjjeon@inha.ac.kr.

PMID: 33895514
DOI: 10.1016/j.scitotenv.2021.147177

Abstract

In this study, we examined tire and road wear microparticles (TRWMPs) in road dust along the Seoul metropolitan area, from industrial and residential areas. The road dust samples were collected via vacuum sweep methods and then filtered to obtain particles with diameters less than 75 μm. To quantify the TRWMPs in road dust, we used the raw materials of tire components, natural rubber (NR), and styrene-butadiene rubber (SBR), as standard materials. We evaluated the usability of the pyrolyzer-gas chromatography/mass spectrometry py-GC/MS method introduced in ISO/TS 20593 by confirming the decomposition temperatures of the NR and SBR by thermogravimetric (TG) and evolved gas analysis (EGA)-MS. The average of TRWMPs in industrial and residential area road dust were 22,581 and 9818 μg/g, respectively, indicating that the industrial area has 2.5 times higher TRWMPs concentration. Further, the NR, the main component of truck bus radial, to SBR, the main component of passenger car radial, ratio was slightly higher in the industrial area than in the residential area. This presumably means that the high traffic volume, including heavy duty vehicles in industrial areas, affected the higher concentration of TRWMPs. This study reveals the growing evidence of the importance of TRWMPs in road dust and how TRWMPs quantity can impact the air quality of the Seoul metropolitan area.

Keywords: Passenger car radial; Pyrolyzer-gas chromatography/mass spectrometry; Tire and road wear particles; Truck bus radial.