Characteristics of potentially toxic elements and multi-isotope signatures (Cu, Zn, Pb) in non-exhaust traffic emission sources SCIE SCOPUS

Cited 43 time in WEB OF SCIENCE Cited 46 time in Scopus
Title
Characteristics of potentially toxic elements and multi-isotope signatures (Cu, Zn, Pb) in non-exhaust traffic emission sources
Author(s)
Jeong, Hyeryeong; Ryu, Jong-Sik; Ra, Kongtae
KIOST Author(s)
Ra, Kongtae(나공태)
Alternative Author(s)
정혜령; 나공태
Publication Year
2022-01
Abstract
Non-exhaust emissions (e.g., particles from brake pads, asphalt, curb, road paint, tire) are important sources of potentially toxic elements (PTEs) pollution in urban environments and are potential causes of PTEs pollution in road dust. We present the PTEs concentrations (Cr, Ni, Cu, Zn, As, Cd, Sn, Sb, Pb) of non-exhaust emission sources and pollution degree of PTEs. Isotopic signatures of Cu, Zn, and Pb were also analyzed to distinguish these sources. Among PTEs, the Cu concentration in all brake pads was significantly high and brake pads from Korea showed remarkably high Sb concentrations. Asphalt had a higher Pb concentration than other non-exhaust emission sources. Mean of δ65CuAE647, δ66ZnIRMM3702, and 206Pb/207Pb values of non-exhaust emission sources in this study ranged from −0.49‰ to +0.19‰, −0.24‰ to +0.16‰, and 1.1535 to 1.4471, respectively. Non-exhaust emission sources could be discriminated by plotting the concentration and isotopic composition of Cu. Cu isotopic compositions (δ65CuAE647) were clearly distinguished between brake pads including domestic and imported products and tires. Zn isotope values (δ66ZnIRMM3702) of brake pads, tires, and asphalt overlapped, but discriminated from road paint and curb. Our results indicate that the combination of Cu and Zn isotopic signatures can distinguish various non-exhaust traffic emissions, especially brake pads and tires. © 2021 Elsevier Ltd
ISSN
0269-7491
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/42063
DOI
10.1016/j.envpol.2021.118339
Bibliographic Citation
Environmental Pollution, v.292, 2022
Publisher
Pergamon Press Ltd.
Keywords
Brake pad; Multi-isotopes; Tire; Tracing pollution sources; Urban pollution
Type
Article
Language
English
Document Type
Article
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