School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK.
Department of Chemistry, University of Surrey, Stag Hill, Guildford, GU2 7XH, UK.
Environ Sci Pollut Res Int. 2020 May;27(15):18345-18354. doi: 10.1007/s11356-020-08187-4. Epub 2020 Mar 17.
Owing to their physical and chemical properties, particles generated by the abrasion of tyre tread against road surfaces, or tyre wear particles, are recognised as microplastics. Recent desk-based studies suggest tyre wear to be a major contributor of microplastic emissions to the environment. This study aimed to quantify tyre wear in roadside drains and the natural environment near to a major road intersection. Tyre particles were identified by visual identification and a subsample confirmed as tyre wear by GC-MS using N-cyclohexyl-2-benzothiazolamine (NCBA) as a marker. The abundance of tyre wear within roadside drains was greater in areas associated with increased braking and accelerating than that with high traffic densities (p = < 0.05). Tyre particle abundance in the natural environment ranged from 0.6 ± 0.33 to 65 ± 7.36 in 5 mL of material, with some evidence of decline with distance from the road. This study offers preliminary data regarding the generation and abundance of this under-researched microplastic.
由于轮胎胎面与路面摩擦产生的颗粒或轮胎磨损颗粒具有物理和化学性质，因此被认为是微塑料。最近的基于桌面的研究表明，轮胎磨损是向环境中排放微塑料的主要因素之一。本研究旨在定量路边排水沟和主要道路交叉口附近自然环境中的轮胎磨损。通过目视识别和使用 N-环己基-2-苯并噻唑胺 (NCBA) 作为标记的 GC-MS 确认的子样本来确定轮胎颗粒。与高交通密度相比，与制动和加速相关的区域中路边排水沟内轮胎磨损的丰度更高（p<0.05）。天然环境中轮胎颗粒的丰度在 5 毫升材料中为 0.6±0.33 至 65±7.36，有证据表明从道路上的距离越远，轮胎颗粒的丰度越低。本研究提供了有关这种研究较少的微塑料产生和丰度的初步数据。
