Rapid, 3D Chemical Profiling of Individual Atmospheric Aerosols with Stimulated Raman Scattering Microscopy,Small Methods

当前位置： X-MOL 学术 › Small Methods › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Rapid, 3D Chemical Profiling of Individual Atmospheric Aerosols with Stimulated Raman Scattering Microscopy
Small Methods ( IF 10.7 ) Pub Date : 2019-12-11 , DOI: 10.1002/smtd.201900600
Jianpeng Ao ₁ , Yiqing Feng ₂ , Simin Wu ₁ , Tao Wang ₂ , Jiwei Ling ₁ , Liwu Zhang ₂ , Minbiao Ji ₁

Affiliation

Visualizing the 3D chemical profiles of individual aerosols is crucial to understand their formation and aging processes, yet remains technically challenging. Here, the first application of stimulated Raman scattering (SRS) microscopy on 3D chemical imaging of individual aerosols in a nondestructive manner is demonstrated. SRS is capable of mapping chemical components of aerosols at a speed four orders of magnitude faster than conventional spontaneous Raman microscopy. Spatially resolved distributions of nitrates and sulfates reveal the fine structures and different mixing states of atmospheric particles. Moreover, high‐throughput quantifications of chemical compositions and particle size distributions are realized by large‐area imaging and statistical analysis. Its high‐speed and 3D chemical quantification capabilities promise SRS microscopy as a unique tool for studying the properties of single atmospheric particles, and ultimately their impacts on climate and human health.

中文翻译：

使用刺激的拉曼散射显微镜对个别大气气溶胶进行快速3D化学分析

可视化单个气溶胶的3D化学特征对于了解其形成和老化过程至关重要，但在技术上仍然具有挑战性。在此，以无损方式展示了受激拉曼散射（SRS）显微镜在单个气溶胶的3D化学成像上的首次应用。SRS能够以比传统自发拉曼显微镜快四个数量级的速度绘制气溶胶的化学成分图。硝酸盐和硫酸盐的空间分辨分布揭示了大气颗粒的精细结构和不同的混合状态。此外，通过大面积成像和统计分析可实现化学成分和粒度分布的高通量定量。

更新日期：2019-12-11

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文