在材料回收设施采样微塑料
Abigail P Lindstrom1, Joseph M Conny2, Diana L Ortiz-Montalvo2
1Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, MD, USA. Abigail.Lindstrom@NIST.GOV.
Analytical and bioanalytical chemistry
|April 1, 2024
概括
研究人员开发了一种新方法来检测和分析空气中的微塑料. 这种技术可以改善在现实环境中对微塑料风险的评估.
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:
- 由于仪器和样本准备的局限性,检测空气中的微塑料具有挑战性.
- 评估微塑料的环境风险需要在现实世界中进行准确的测量.
- 现有的方法难以应对空气中的颗粒物的复杂性.
研究的目的:
- 开发和验证采样和描述空气中的微塑料的方法.
- 克服微塑料分析中的仪器限制.
- 为了能够更好地评估空气中微塑料的风险.
主要方法:
- 在材料回收设施使用核孔过器采样颗粒物.
- 用涂层和激光雕刻的信托图案为微型拉曼光谱学准备过器.
- 多平台显微镜包括扫描电子显微镜 (SEM) 和光显微镜 (LM).
- 用微型拉曼光谱来识别聚合物的碳丰富和有色颗粒的分析.
主要成果:
- 优化的采样条件确定为2小时以25L/分钟的速度.
- 信托模式促进了样本识别和粒子转移用于直角测量.
- SEM和LM分别发现了富含碳的和有颜色的粒子.
- 微拉曼光谱学成功地在空气中的粒子中确定了特定的聚合物.
结论:
- 开发的方法使得空气中微塑料的有效采样和表征成为可能.
- 这种方法解决了环境样本中微塑料分析的关键挑战.
- 这项研究为更准确地评估空气中微塑料的风险提供了基础.
相关概念视频
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Sampling materials are classified into three main types: solid, liquid, and gas.
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