Composition of Smoke Generated by Landing Aircraft
| Autor: | Kevin Morris, Angus Graham, Vladimir Vishnyakov, Rhys Jones, Simon Christie, Bryony S. Thomas, Daniel M. Peters, Cathy Ansell, Michael Bennett |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Air Pollutants
business.product_category Materials science Aircraft Particle number Scanning electron microscope Spectrometry X-Ray Emission Mineralogy General Chemistry Aerosol Airplane Lidar Air Pollution Smoke Particle-size distribution Microscopy Electron Scanning Environmental Chemistry Particle Particle size business Environmental Monitoring Vehicle Emissions |
| Zdroj: | Environmental Science & Technology. 45:3533-3538 |
| ISSN: | 1520-5851 0013-936X |
| Popis: | A combination of techniques has been used to examine the composition of smoke generated by landing aircraft. A sample of dust from the undercarriage from several commercial airliners was examined with SEM/EDX (Scanning Electron Microscope/Energy Dispersive X-ray) to determine its elemental composition and also with an aerosizer/aerodisperser in order to measure the particle size spectrum. The observed size spectrum was bimodal with equal numbers of particles at peaks of aerodynamic diameter ∼10 μm and ∼50 μm. The EDX analysis suggested that the former peak is carbonaceous, while the latter consists of elements typical of an asphalt concrete runway. In the field, a scanning Lidar, in combination with optical and condensation particle counters, was deployed to obtain limits to the number concentration and size of such particles. Most of the (strong) Lidar signal probably arose from the coarser 50 μm aerosol, while respirable aerosol was too sparse to be detected by the optical particle counters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|