Microplastics (MPs) have become a growing concern in the context of environmental pollution, with an increasing focus on their presence in indoor environments, including university facilities. This study investigates the presence and characteristics of MPs in different university indoor environments. Initial examination of indoor ambient MPs involved physical characterization through optical microscopy, focusing on classifying MPs by shape and color. Various types of MPs, including fibers, fragments, pellets, foams, films, and lines, were identified, with the most common colors being black, red, blue, and brown. Fragments were the predominant type of MPs found, although accurately quantifying their numbers proved challenging due to the dense sample content. These MPs displayed rough and irregular margins suggestive of abrasion. Subsequent chemical and elemental characterization was conducted using micro-Raman and SEM-EDX, revealing the presence of 25 different types of MPs, including PA 66, PTFE, PP, HDPE, and PE. The study indicates that university inhabitants are exposed to airborne MPs (≥ 2.5–336.89 μm) at inhalation rates of 13.88–18.51 MPs/m³ and 180–240 MPs daily. These MPs exhibited significant variations in size, and their distribution varied among the different indoor environments studied. SEM-EDX analysis revealed common elements in the identified MPs, with C, O, F, Na, Cl, Al, Si, and others consistently detected. This research is the first to comprehensively analyze MPs in nine different indoor university environments using active sampling. Identifying and reducing MP contamination in these facilities might stimulate more awareness, promote extensive scientific investigation, and facilitate the development of informed policies.

在环境污染的背景下，微塑料 (MP) 已成为人们日益关注的问题，人们越来越关注它们在室内环境中的存在，包括大学设施。本研究调查了不同大学室内环境中议员的存在和特征。对室内环境 MP 的初步检查涉及通过光学显微镜进行物理表征，重点是按形状和颜色对 MP 进行分类。已鉴定出各种类型的 MP，包括纤维、碎片、颗粒、泡沫、薄膜和线，最常见的颜色是黑色、红色、蓝色和棕色。碎片是发现的 MP 的主要类型，尽管由于样本内容密集，准确量化其数量具有挑战性。这些 MP 的边缘粗糙且不规则，表明存在磨损。随后使用显微拉曼和 SEM-EDX 进行了化学和元素表征，揭示了 25 种不同类型 MP 的存在，包括 PA 66、PTFE、PP、HDPE 和 PE。研究表明，大学居民接触空气中的 MP（≥ 2.5-336.89 μm），吸入率为 13.88-18.51 MPs/m ³和每天 180-240 MPs。这些 MP 的大小存在显着差异，并且它们的分布在所研究的不同室内环境中也有所不同。 SEM-EDX 分析揭示了已识别 MP 中的常见元素，一致检测到 C、O、F、Na、Cl、Al、Si 等。这项研究首次使用主动采样技术对九个不同室内大学环境中的 MP 进行了全面分析。识别和减少这些设施中的 MP 污染可能会激发更多的认识，促进广泛的科学调查，并促进明智政策的制定。