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在气候和消化环境下透露微塑料的光谱特征,通过短波红外高光谱传感

Yu-Jhen Hsu¹, Chihchi Huang¹, Mengshan Lee¹

¹Department of Safety, Health and Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan.

Environmental pollution (Barking, Essex : 1987)

|December 9, 2023

概括

这项研究创建了一个超光谱数据库,用于经过气候变化和消化的微塑料 (MP). 短波红外高光谱传感可以快速识别各种MP,这对于海洋环境保护至关重要.

科学领域:

环境科学环境科学
分析化学分析化学
材料科学材料科学材料科学

背景情况:

微塑料 (MP) 污染对海洋生态系统越来越令人担忧.
环境退化过程改变了MP的特性,使识别变得复杂.
准确量化和识别MP对于有效的环境监测至关重要.

研究的目的:

建立一个全面的超频谱数据库,用于受天气影响和消化退化的国会议员.
研究气候变化和消化过程对MP光谱特征的影响.
为了验证使用超光谱传感用于MP识别.

主要方法:

收集的处女和商业国会议员 (约. 3毫米) 的不同类型的聚合物.
接受了与气候和微生物相关的消化治疗的国会议员.
使用短波红外 (SWIR) 超光谱传感分析了光谱特征.
与参考聚合物和添加剂相比验证的光谱数据.

主要成果:

聚烯 (PP) 和聚乙烯 (PE) 的气候变化MP显示了由于诺里什反应的新峰/变化 (1679-1705 nm).
聚乙烯二甲 (PET),乙烯丁 (ABS) 和聚乙烯 (PS) MPs的消化处理显示出新的吸收峰值 (1135-1165 nm).
退化MP的光谱特征与参考材料匹配,准确度为80%左右.
通过SWIR的高光谱传感,可以在广的地区快速识别国会议员.

结论:

超光谱传感对于快速识别处女和退化的MPs是有利的.
建立的数据库和方法提高了MP分类的效率.
这种方法与其他技术相结合,为MP识别提供了高通量结果.
该研究提供了改善环境MP分类的基础见解.

关键词:

吸收的峰值是吸收的峰值.函数组是指功能组中的函数组.微塑料的污染微塑料的污染峰值的移动发生了变化.照相降解是一种光降解.表面氧化过程中的表面氧化.

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