中国环境科学

作者：韩全康, 陈宏飞, 祖雷, 张宇哲, 王运静, 谢沛远, 朱仁成

单位：1. 郑州大学生态与环境学院, 河南 郑州 450001;2. 中国环境科学研究院, 国家环境保护机动车污染控制与模拟重点实验室, 北京 100012;3. 中国环境科学研究院, 大气环境研究所, 北京 100012

关键词：非尾气颗粒物,轮胎磨损,轻型汽车,排放因子,理化特征

基金：河南省高等学校重点科研项目(23A610007);中国环境科学研究院国家环境保护机动车污染控制与模拟重点实验室开放基金资助项目(VECS2022K05);中央级公益性科研院所基本科研业务费专项(2022YSKY-05);郑州大学2023年度基础研究(自然科学)培育项目(JC23410024)

To investigate the emission characteristics of tire wear particles (TWPs), tire wear emission tests based on the real-world driving were carried out on typical light-duty vehicles. The physicochemical characteristics of TWPs were systematically analyzed, along with the effects of environmental temperature, vehicle type, curb weight, and tyre position. The results showed that the main metallic elements in TWPs were Si, Ca, Na, etc. The sizes of TWPs were concentrated in 5~30µm and the shapes were spherical, rod-like, aggregated, and irregular, etc. The average OC/EC value was 4.8. The average emission factor of TWPs in autumn and winter (112.7mg/km) was slightly higher than those in spring and summer (104.6mg/km). A positive correlation was observed between the curb weight and the emission factor of the TWPs. The emission factors of the TWPs of electric vehicles (70.2~177.6mg/km) were slightly higher than those (54.2~155.2mg/km) of fuelled vehicles. The front tires of light-duty vehicles emitted 6%~30% more TWPs than the rear tires on average. It was estimated that the total annual TWPs emissions from light-duty vehicles in China reached 481,000 tons in 2022, exceeding the exhaust particulate matter emissions .

来源：2024年第11期

《中国环境科学》期刊编辑部

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