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Zijiang Yang¹, Jiaqi Zhang¹, Nakano Haruka²

¹Faculty of Marine Resources and Environment, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-Ku, Tokyo 108-8477, Japan.

The Science of the total environment

|March 26, 2024

概括

在东京湾分析了聚乙烯 (PE) 和聚烯 (PP) 微塑料. 光谱分析显示,受化学处理影响的样品氧化会影响鉴定,这表明氧化PE是更好的参考.

科学领域:

环境科学环境科学
分析化学分析化学
海洋污染海洋污染

背景情况:

微塑料,特别是聚乙烯 (PE) 和聚烯 (PP),是东京湾等海洋环境中普遍存在的污染物.
准确识别微塑料类型及其降解状态对于了解环境影响至关重要.

研究的目的:

为了分析从东京湾表面海水中收集的微塑料的光谱特性.
调查化学处理,特别是振动对微塑料光谱数据的影响.
为了更好地识别,将光谱数据与标准聚乙烯 (PE) 和氧化PE (PEOx) 参考光谱进行比较.

主要方法:

从东京湾表面海水中收集微塑料样本.
聚合物类型的识别,重点是聚乙烯 (PE) 和聚烯 (PP).
分析光谱特性,包括碳基指数 (CI),并与标准PE和氧化PE (PEOx) 光谱进行比较.
基于微塑料形状和颜色的光谱变异的评估.

主要成果:

发现的主要微塑料类型是PE和PP;碎片是最常见的PE形状,白色是最常见的颜色.
与标准PE相比,在不同的形状和颜色中观察到平均光谱的显著偏差.
化学处理期间的动可能导致氧化,导致明显的光谱峰值.
样本光谱与氧化PE (PEOx) 比标准PE更相似,表明PEOx是更合适的参考.

结论:

微塑料的光谱特性受到诸如形状,颜色和化学处理过程等因素的影响.
氧化,可能由在样本准备过程中动诱导,显著改变光谱特征.
使用氧化PE (PEOx) 作为参考光谱可以提高环境样本中微塑料识别的准确性.

关键词:

碳基指数是一个指数.在FTIR光谱学中使用FTIR.微塑料是一种微塑料.频谱分析是一种分析.

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