Road-associated microplastics, originating from tire wear and fragmented litter, are significant contributors to microplastic pollution. This study examines the characteristics of these particles within a university, focusing on their size, shape, color, and polymer composition. Suspended microplastics were collected using portable active samplers for PM₁₀ and results have shown that PM₁₀ concentrations peaked on Thursdays and declined, reaching their lowest levels on Sundays, with overall weekend measurements indicating reduced concentrations compared to weekdays. Importantly, the presence of microplastics correlated with increased PM10 levels. These findings highlighted a dominance of irregularly fragmented black microplastics, primarily composed of polyethylene, polypropylene, and polybutadiene, influenced mainly by vehicular movement. Additionally, metal contaminants such as aluminum, iron, and zinc were identified through SEM-EDX analysis of selected microplastics, particularly concentrated at the university's main entrance, the area with the highest traffic. This research enhances understanding of atmospheric microplastic pollution in university environments with heavy vehicle traffic and supports efforts to promote sustainable transportation and climate-friendly initiatives.

中文翻译：

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道路车辆轮胎磨损对可持续交通高流量大学中微塑料的影响


源自轮胎磨损和碎片垃圾的道路相关微塑料是微塑料污染的重要因素。本研究检查了大学内这些颗粒的特性，重点关注它们的大小、形状、颜色和聚合物组成。使用便携式 PM ₁₀ 主动采样器收集悬浮微塑料，结果表明，PM ₁₀ 浓度在周四达到峰值，然后下降，在周日达到最低水平，周末的总体测量表明与工作日相比，浓度降低。重要的是，微塑料的存在与 PM10 水平升高相关。这些发现突出了不规则碎片化的黑色微塑料的优势，主要由聚乙烯、聚丙烯和聚丁二烯组成，主要受车辆移动的影响。此外，通过对选定的微塑料进行 SEM-EDX 分析，确定了铝、铁和锌等金属污染物，特别是集中在大学正门，即人流量最大的区域。这项研究增强了对车辆交通繁忙的大学环境中大气微塑料污染的理解，并支持促进可持续交通和气候友好倡议的努力。