大型車や小型車の道路走行により発生するタイヤ摩耗粉じんの大気粒子状物質への寄与

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  • Contribution of Rubber Dust Generated from Tire-Dust by Travelling of Heavy-Duty and Passenger Vehicles on the Road to Atmospheric Particulate Matter
  • オオガタシャ ヤ コガタシャ ノ ドウロ ソウコウ ニ ヨリ ハッセイ スル タイヤ マモウ フンジン ノ タイキ リュウシジョウ ブッシツ エ ノ キヨ

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In order to investigate on particulate matter emission and generation by the traffic of heavy-duty vehicles on roads, total suspended particulate matter (TSP) were collected at the roadside along major local-road Urawa-Tokorosawa with high-volume air samplers during September 14∼16 and November 30∼December 5, 1992. Concentration of tire-dust in TSP was determined by a method based on the determination of thiophene derivatives generated by the pyrolysis of TSP. During the latter sampling period, ambient concentrations of tire-dust generated by the traffic of heavy-duty vehicles and passenger cars were 1.8∼5.9 and 2.7∼6.0 μgm-3, respectively. These results suggest that 3-methylthiophene be a suitable indicator of TSP emitted and generated from heavy-duty vehicles, because it is a specific pyrolyzate from tire-dust for trucks and buses. Concentration of elemental carbon (EC), most of which could be emitted by diesel-powered vehicles. Contributions of total tire-dust by heavy-duty vehicles and passenger cars to TSP and EC concentration were ca. 4 and ca. 20%, respectively.

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