Microplastics pollution is progressively threatening natural parks across the world. In the framework of monitoring this concerning trend, the present study focuses on the occurrence and identification of mesoplastics (MEPs) and microplastics (MPs) in sand samples collected before and after the summer season from the beach of the Nature Park of Migliarino San Rossore Massaciuccoli (Pisa, Italy). Meso- and microplastics were identified using Fourier transform infrared spectroscopy 2D Imaging, and detected in all samples with average concentrations of 207 ± 30 MPs/kg d.w., and 100 ± 44 MEPs/kg d.w., respectively. Seasonal changes of flow of the Arno River, industrial activities, and urban footprint were considered as the major sources of plastic pollution. Our results showed the occurrence of both natural and synthetic polymers including cellulose, polyethylene, polypropylene, polyamides, polyethylene terephthalate, and acrylonitrile.

微塑料污染正逐渐威胁着世界各地的自然公园。在监测这一相关趋势的框架内，本研究的重点是在夏季前后从 Migliarino San Rossore Massaciuccoli 自然公园的海滩收集的沙样中中塑料 (MEP) 和微塑料 (MP) 的发生和鉴定。 （意大利比萨）。使用傅立叶变换红外光谱 2D 成像识别中塑料和微塑料，并在所有样品中检测到的平均浓度分别为 207 ± 30 MPs/kg dw 和 100 ± 44 MEPs/kg dw。阿诺河流量的季节性变化、工业活动和城市足迹被认为是塑料污染的主要来源。我们的结果表明，天然和合成聚合物都存在，包括纤维素、