This study investigates the presence of microplastics (MPs) in hypertonic fluid solutions, a widely used medical treatment packaged predominantly in plastic. For this purpose, in this study, 13 hypertonic fluid samples from different brands and two different types of packaging (polypropylene and polyvinyl chloride) were analyzed using visual particle counting, µ-Raman microscopy and ATR-FTIR. The results reveal the pervasive presence of MPs in all samples, with an estimated average concentration of 62.82 ± 72.38 MPs/1000 mL. There was no statistically significant difference in MP concentration between PP and PVC packaging. The particles predominantly consisted of fragments (74.1%) and fibers (25.9%), ranging in size from 0.04 to 2.37 mm. µ-Raman analysis identified 12 synthetic polymers as well as cellulose, with polyethylene and cellulose being the most prevalent.

中文翻译：

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静脉高渗液是人体微塑料暴露的来源

这项研究调查了高渗液溶液中微塑料 (MP) 的存在情况，高渗液溶液是一种广泛使用的主要以塑料包装的医疗方法。为此，在本研究中，使用目视颗粒计数、μ拉曼显微镜和 ATR-FTIR 对来自不同品牌和两种不同类型包装（聚丙烯和聚氯乙烯）的 13 个高渗液样品进行了分析。结果表明，所有样品中普遍存在 MP，估计平均浓度为 62.82 ± 72.38 MP/1000 mL。 PP 和 PVC 包装之间的 MP 浓度没有统计学上的显着差异。颗粒主要由碎片 (74.1%) 和纤维 (25.9%) 组成，尺寸范围为 0.04 至 2.37 毫米。 μ-拉曼分析确定了 12 种合成聚合物以及纤维素，其中聚乙烯和纤维素是最常见的。