城市道路积尘颗粒理化性质受车辆交通特征影响规律及其吸附石油烃机制研究

道路积尘（RDS）作为理化性质复杂的混合物，是将交通污染物带入雨水径流的关键载体。目前，RDS吸附交通污染物的研究主要集中于“污染的源解析”、“时空分布规律”及相关的“生态及人体健康风险评价”三个方面。但对影响RDS环境效应具有重要作用的其吸附污染物微界面机制及相关因素的作用原理尚未深入进行；同时，对毒性较高的新兴交通污染物石油烃（TPH）关注不足。据此，本项目拟通过研究日均车流量、拥堵系数、柴/汽油车辆比例等不同交通特征条件下，RDS理化性质的分异规律；并结合红外光谱（FTIR）、X射线光电子能谱（XPS）、气相-质谱（GC-MS）等分析手段，深入揭示RDS粒径、矿物质的组成及晶格结构、离子交换容量、有机碳含量等关键理化性质对TPH吸附机制的影响。本研究将为全面了解RDS的环境污染效应和开发道路雨水处理及回用技术提供理论支持，并拓展对雨水径流污染领域内环境介质吸附行为的科学认识。

Road deposited sediments (RDS) is a mixture with complex physical and chemical properties and is the key carrier of transporting traffic related pollutants into stormwater runoff. Currently, the research areas of RDS adsorbing pollutants are primarily source identification, spatial and temporal distribution and pollutant toxicity and environmental and human health risk assessment. However, limited research studies focus on the micro-interfacial processes of RDS adsorbing pollutants and relevant mechanisms, which are essential to RDS environmental effect. Additionally, few researchers focus on total petroleum hydrocarbon (TPH), which is a highly toxic traffic related pollutant. This research study will investigate role of RDS physical and chemical properties, which are influenced by traffic characteristics including average daily traffic volume, traffic congestion condition and diesel/gasoline vehicle rate on TPH adsorption. This study will also analyze the influence of RDS physical and chemical properties such as particle size, mineral composition and lattice structure, cation exchange capacity and organic carbon contents on TPH micro-interfacial adsorption mechanisms by using FTIR, XPS and GC-MS. The research outcomes will contribute to the in-depth understanding of RDS environmental effect, improving stormwater treatment system design and safeguarding reuse safety. Additionally, this outcomes will also extend the knowledge on environmental media’s adsorption in the field of stormwater runoff pollution.