Tire wear particles (TWPs) and road wear particles (RWPs) are produced by friction between the road surface and tire tread, and they mainly consist of road dust. The road dust can be scattered to other places by traffic. In this study, the amount of road dust that can be transferred to central land bus stops from other lanes was investigated by analyzing specific rubber markers of bus and passenger car tire treads using pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) equipped with a Curie point pyrolyzer. The main rubber components of bus and passenger car tire tread rubber compounds are natural rubber (NR) and styrene-butadiene rubber (SBR), respectively. Dipentene, 4-vinylcyclohexene (4-VCH), and 4-phenylcyclohexene (4-PCH) were used as the markers for quantification of NR, BR, and SBR in the sample, respectively. The types and contents of TWPs in the road dust samples collected from uphill and downhill bus stops were examined to determine the degree of road dust transfer. The TWP content in the road dust sample collected from the uphill bus stop decreased from 3.7% to 0.3% as the particle size increased from ≤ 20 μm to 106–212 μm, while that in the road dust sample collected from the downhill bus stop decreased from 1.6% to 0.4% as the particle size increased from 20–38 μm to 106–212 μm. The average TWP content of road dust at the uphill bus stop was higher than that at the downhill bus stop. The inflow rates of road dust from other lanes varied with the particle size. For the road dust of 20–212 μm, the inflow rates of road dust were 27–60% and 49–60% for the uphill and downhill bus stops, respectively. The inflow rate of road dust tended to increase with decreasing the particle size.

中文翻译：

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通过热解技术，利用公交车和客运车辆的轮胎胎面橡胶标记，量化从其他车道到中央车道公交车站的道路灰尘转移

轮胎磨损颗粒（TWP）和道路磨损颗粒（RWP）是由路面与轮胎胎面摩擦产生的，主要由道路灰尘组成。道路灰尘可以通过交通分散到其他地方。在本研究中，通过使用热解气相色谱/质谱法 (Py-GC/MS) 分析公交车和客车轮胎胎面的特定橡胶标记物，研究了可从其他车道转移到中央陆地公交车站的道路灰尘量配备居里点热解器。客车和客车轮胎胎面胶的主要橡胶成分分别是天然橡胶（NR）和丁苯橡胶（SBR）。二戊烯、4-乙烯基环己烯 (4-VCH) 和 4-苯基环己烯 (4-PCH) 分别用作样品中 NR、BR 和 SBR 定量的标记物。对上坡和下坡公交车站采集的道路灰尘样品中TWPs的种类和含量进行了检测，以确定道路灰尘迁移的程度。随着粒径从≤20μm增加到106~212μm，上坡公交站采集的道路灰尘样品中TWP含量从3.7%下降到0.3%，而下坡公交站采集的道路灰尘样品中TWP含量则下降随着粒径从 20-38 μm 增加到 106-212 μm，从 1.6% 增加到 0.4%。上坡公交站道路灰尘平均TWP含量高于下坡公交站。其他车道道路灰尘的流入速率随颗粒大小的变化而变化。对于20~212μm的道路粉尘，上坡和下坡公交车站道路粉尘流入率分别为27~60%和49~60%。道路扬尘流入量随粒径减小而呈增加趋势。