A new type of electron microscope rapid collection device for atmospheric particles and its application cases

• Published in: Microscopy research and technique Vol. 84; no. 8; pp. 1740 - 1749
• Main Authors: Sun, Min, Sun, Yi‐yuan, Qiao, Cong, Zhang, Xiao‐kai
• Format: Journal Article
• Language: English
• Published: Hoboken, USA John Wiley & Sons, Inc 01-08-2021; Wiley Subscription Services, Inc
• Subjects: 3D modeling; Aerosols; Air monitoring; Air pollution; Atmospheric models; atmospheric particulates matter; Electron microscopy; electron microscopy observation; Microscopy; Monitoring instruments; Morphology; Outdoor air quality; Particle size distribution; Particulate emissions; Particulate matter; Particulates; Pollution detection; Pollution monitoring; Sampling; Size distribution; Technology; Three dimensional models; Three dimensional printing; ultra microstructure; 3D modeling; ultra microstructure; electron microscopy observation; size distribution; atmospheric particulates matter
• ISSN: 1059-910X; 1097-0029
• DOI: 10.1002/jemt.23731

A device for collecting atmospheric particulates matter for on‐line electron microscopy was designed and manufactured by using 3D modeling and printing technology. The device was used to collect atmospheric particulates matter in Xining city of Qinghai province for seven consecutive days and used to collect atmospheric particulates matter in Jinan city of Shandong province for 30 consecutive days. And the samples were analyzed by electron microscopy. Through it can obtain ultra structure and size distribution information of atmospheric particulates matter. The experimental results reflected the distribution of atmospheric particulate matter in real time. The on‐line acquisition device for electron microscopy is practical, fast, and convenient, which greatly shortens the sampling period and can be carried to any place outdoors for real‐time sampling. The morphological structure and particle size distribution of atmospheric particles in sampling area was observed by electron microscope. The device has reference value to the study of PM2.5 and PM10 in atmosphere and air pollution. This acquisition device is convenient for the detection of sample by electron microscopy. It can further expand and simplify the sampling technology of large‐scale instruments and equipment. This new method of real‐time monitoring of air pollution is worth popularizing and applying.
A new type of electron microscope rapid collection device for atmospheric particles and its application cases.
Using 3D printing technology, an innovative device for rapid collection of atmospheric particles for on‐line use of electron microscopy was developed.
Compared with the traditional 24‐hr sedimentation method, the efficiency of the electron microscope rapid atmospheric particle collection device is increased by 24 times.
In two application cases, different characterization methods are used to study the particle size distribution of atmospheric particles.