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OAQ MicroscopY Images

Microscope images from the Outdoor Air Quality Forensic Special Studies Unit. Click on each image to enlarge.

​Scanning Electron Microscope Images - Combustion Particles

Imperial Valley combustion agglomeratebroken fly ash particle

​Polarized Light Microscopy Images - Asbestos

Chrysotile asbestos viewed in polarized lightchrysotile asbestos from vinyl tile adhesiveChrysotile asbestos viewed through first-order red compensator

​Scanning Electron Microscope Images - Lead Containing Particles

Lead in outdoor paint chip from San Francisco housing projectlead in indoor paint chip from San Francisco housing project

​Scanning Electron Microscope Images - Asbestos

Chrysotile asbestos from brake shoe liningMixture of asbestos and non-asbestiform serpentine minerals in natural occurence of asbestos in Northern Californi

​Scanning Electron Microscope Images - Miscellaneous Atmospheric Particles

Imperial Valley fungal sporesOakland pine pollen

​Transmission Electron Microscope Images - Asbestos


high-resolution TEM image of concentric crystal sheets in Chrysotile asbestos from water sampleTEM image and electron diffraction pattern of non-asbestiform serpentine fiber from natural occurence in Northern California

​Fourier Transform Infrared (FTIR) Microscope Images and Spectra

Polyethylene microplastic identified in Pacific Ocean fish stomach with FTIR microscopy    Juice box contaminant identified with FTIR microscopy

Stereozoom Microscope Images - Asbestos

​Acoustic insulation with animal hair and chrysotile asbestos. 

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