Global S&T Development Trend Analysis Platform of Resources and Environment
Towards an improved understanding of tire wear contribution to airborne particulate matter | |
admin | |
2019-03-13 | |
发布年 | 2019 |
语种 | 英语 |
国家 | 国际 |
领域 | 资源环境 |
正文(英文) |
Published: Wed, Mar 13, 2019
Type: News
Related ContentGeneva, 13 March 2019: Vehicle exhaust and non-exhaust sources including brake wear, tire wear, and road pavement abrasion are contributors to airborne particulate matter (PM) which is an important indicator of air quality. A Tire Industry Project (TIP) study investigated the potential contribution of tire and road wear particles (TRWP) to airborne PM in several major urban centers. The study indicates that tire wear comprises a small percentage of total PM2.5 (PM smaller than 2.5 micrometers in diameter) in ambient air, while the authors note the importance of further studies to strengthen the dataset. A focus on fine particulate matter TRWP are tiny debris produced when tires are used on the road. Generated by the friction between tires and the road surface, TRWP are a mixture of tire tread material and elements from the road surface. The study focused on determining the contribution of TRWP to the fraction of PM smaller than 2.5 micrometers in diameter – PM2.5. Understanding the potential for exposure to PM2.5 TRWP is relevant to human health because particles of this small size are readily inhaled. With analysis of urban roadside air samples from London, Tokyo and Los Angeles the peer reviewed study contributes to a limited understanding of potential exposure to airborne TRWP and the potential contribution of TRWP to total road-side PM2.5. An indication of low tire wear contribution Study samples indicated that TRWP concentrations in the PM2.5 fraction was low, representing an average contribution to total PM2.5 of less than 0.3%. However, the study found significant differences in TRWP contribution to PM2.5 between the three cities, and no significant correlation between TRWP in PM2.5 and traffic count. A need for further research Uncertainties highlighted by the authors (including reference to the limitations of a small sample size) underline a need for further research. The authors acknowledge that additional sampling for TRWP in ambient air would help establish a more robust dataset for characterizing the contribution of tire wear to non-exhaust PM emissions to ambient air. Why do tires produce particles? A tire is designed to enhance consumer safety and environmental performance under different road and weather conditions. To meet desired performance levels, tires must achieve a fine balance between several, sometimes contradictory, requirements. TRWP are created through abrasion, which is a physical consequence of the tire's grip on the road – driver and passenger safety would be compromised if tires did not grip the road. A growing body of work TIP has supported research into TRWP for more than a decade and made important contribution to the state-of-knowledge on TRWP characteristics and composition. Understanding the potential health and environmental impacts of TRWP is a TIP priority. TIP has supported studies including:
|
URL | 查看原文 |
来源平台 | World Business Council for Sustainable Development |
文献类型 | 新闻 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/105397 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | admin. Towards an improved understanding of tire wear contribution to airborne particulate matter. 2019. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[admin]的文章 |
百度学术 |
百度学术中相似的文章 |
[admin]的文章 |
必应学术 |
必应学术中相似的文章 |
[admin]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论