False colour TEM and fingerprint of soot (diesel)
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False colour TEM and fingerprint of soot (diesel)
Soot identification for pollution control. High- resolution transmission electron micrograph (HRTEM) of a particle of soot from a diesel engine (left) with its derived signature. The HRTEM shows the structure of the soot particle. Image analysis produces the signature (right), from which are derived details of the structure such as graphite lattice spacing in the particle. Smaller spacings (as here) tend to indicate that the soot originated in a diesel engine, larger spacings tend to arise from wood or coal burning. Signatures could be used to identify sources of soot pollution. HRTEM magnification: x2.5 million
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6365421
© 1994 A.PALOTAS, A.SAROFIM & J.VANDER SANDE/SCIENCE PHOTO LIBRARY
Air Pollution Environmental Finger Print Forensic Forensics Monitoring Pollution Pollution Research Signature Soot
EDITORS COMMENTS
This print showcases the false color transmission electron micrograph (TEM) of a soot fingerprint derived from diesel emissions, serving as a crucial tool in pollution control. On the left side, we observe a high-resolution TEM image that reveals the intricate structure of a soot particle originating from a diesel engine. The image analysis on the right side produces an informative signature, allowing us to extract essential details about the particle's structure, such as graphite lattice spacing. By examining these signatures, scientists can identify and differentiate sources of soot pollution with remarkable accuracy. In this case, smaller spacings within the signature indicate that the soot originated from diesel engines while larger spacings are more likely associated with wood or coal burning. This groundbreaking technique opens up new avenues for monitoring and understanding air pollution caused by various sources. With an astonishing magnification power of x2.5 million in HRTEM, this photograph not only demonstrates its forensic potential but also highlights its significance in environmental research and monitoring efforts focused on combating air pollution. By utilizing these unique fingerprints obtained through HRTEM analysis, researchers can effectively track and mitigate harmful pollutants like soot to protect our environment and improve air quality for future generations. (Photo credit: Science Photo Library)
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