One can keep the diesel vehicle running and can directly allow to deposit the exhaust gas on a mica or carbon or silicon sheet for a brief period . This can be taken out for direct observation under microscope. One can get the distribution in size also by counting
Dear Prof. Dr. Ing.- Sabyasachi Sarkar
Thank you so much for taking the time to respond.
Thank you for your recommendations.
Dear PhD in the research I wish to make measurements on-road with real traffic conditions by adapting a portable equipment that allow me to measurement the PM2.5 particulate matter concentration. Please could you recommend a method for calculating and presenting emission factor results.
Thank you for your time and all your help.
Sincerely
Luis Tipanluisa
This ounds like an Industrial Hygiene project. The industrial hygienist would probably use a tool called an impinger with a small battery operated pump to test this out on the street, I do not recall all the details, but you would have to filter out the larger particles, possibly passing the sample through a (or several ?) filters. There are supply companies that sell equipment to industrial hygienists and they might be eager to tell you about their products. You could also consider communicating with the Department of Industrial Hygiene, School of Public Health, University of Washington, Seattle Washington, USA.
Incidentally operating diesel power units at high altitudes works out better if you use a larger turbo charger than is used at lower altitudes. At very high altitudes this might need special fitting. However, as the engine comes from the lower altitudes, without modification, the fuel efficiency gets worse and the particulate emissions become greater.
The Webster dictionary defines "an impinger as an instrument for collecting samples of dust or other suspended particles especially in air by impinging a stream of the suspension on a surface or in a liquid (as water). Unfortunately I have never seen an impinger that used a fluid, but I have little more than a classroom exposure to sampling particulates."
Dear Prof. Dr. Lewis Maccarter
Thank you very much for the information.
Particulate matter measurement (PM2.5), I want to perform in a light diesel vehicle under real traffic conditions.
Thanks for your comments and all your help.
Sincerely,
Luis Tipanluisa