Comparative study of single particle characterisation by Transmission Electron Microscopy and time-of-flight aerosol mass spectrometry in the London atmosphere

Research output: Contribution to journalArticle

Authors

  • Steve Smith
  • Mike Ward
  • Ray Lin
  • R. Brydson

External organisations

  • University of Leeds
  • Department of Environmental Sciences / Center of Excellence in Environmental Studies, King Abdulaziz University, PO Box 80203, Jeddah, 21589, Saudi Arabia

Abstract

Size fractionated airborne particle samples were collected from the top of the BT Tower and a ground-based site in Regents Park in London by deploying MOUDI instruments at the two locations. Particles were examined by Transmission Electron Microscope (TEM), Energy Dispersive X-Ray Analysis (EDX) and selected area electron diffraction patterns to determine the morphology, crystallinity and composition of individual particles in aggregated and non-aggregated forms. Eight different types of particles were observed which were common both to the ground-based location and some 160 m above the conurbation of London at the top of the BT Tower. Of these different types, amorphous carbonaceous aggregates (soot-like) containing C and O and often extending to the inclusion of Ca, K and Fe were the most common type of particles that occurred across all stages of the impactors but were most common in the fractions

Bibliographic note

Copyright 2012 Elsevier B.V., All rights reserved.

Details

Original languageEnglish
Pages (from-to)400-407
Number of pages8
JournalAtmospheric Environment
Volume62
Early online date4 Sep 2012
Publication statusPublished - 1 Dec 2012

Keywords

  • Transmission Electron Microscope , ATOFMS, Airborne particles, Particulate matter, Atmospheric aerosol