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相关概念视频

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
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Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

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对环境微塑料的样品制备,光和拉曼技术的优化.

Merel C Konings1, Liron Zada1, Robert W Schmidt1

  • 1LaserLaB, Vrije Universiteit Amsterdam, the Netherlands.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|June 4, 2024
PubMed
概括

这项研究优化了使用显微光谱成像检测环境微塑料 (MP) 的方法. 一个新的密度分离系统实现了95%的回收,先进的拉曼显微镜识别了所有塑料类型,包括碳黑色素的塑料.

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:

  • 环境微塑料 (MP) 构成重大威胁,需要准确的检测和表征方法.
  • 目前的显微光谱技术,如拉曼散射和光,在速度和识别有色MP的限制.

研究的目的:

  • 为了优化微塑料分析的样本准备.
  • 评估和改进环境微塑料检测和识别的微光谱技术.
  • 开发环境样本中微塑料分析的综合方法.

主要方法:

  • 开发一种新的密度分离装置 ("MESSY"系统) 和优化尼罗河红色染色.
  • 使用自发拉曼光谱,刺激拉曼散射 (SRS) 和光成像.
  • 构建了一个深紫外线拉曼显微镜,用于增强彩色微塑料的识别.

主要成果:

  • "MESSY"系统显示了95%±5.5%的高恢复率.
  • 尼罗河红色染色为国会议员提供了粗略的分类,尽管光添加剂可能导致错误分类.
  • 拉曼光谱,特别是使用红色激光和深紫外线显微镜,成功地确定了各种有色的MP,包括那些有碳黑的MP.

结论:

关键词:
光显微镜的光学显微镜.光染色是一种光染色.微塑料是一种微塑料.拉曼·拉曼,拉曼·拉曼,拉曼·拉曼.刺激了拉曼散射的作用.

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  • 优化样品准备和先进的光谱方法显著改善了微塑料的检测和识别.
  • 深紫外线拉曼显微镜为分析具有挑战性的样品提供了强大的解决方案,例如有色微塑料.
  • 开发的方法有助于更有效的环境微塑料监测和研究.