World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

A Novel Tandem Differential Mobility Analyzer with Organic Vapor Treatment of Aerosol Particles : Volume 1, Issue 1 (03/09/2001)

By Joutsensaari, J.

Click here to view

Book Id: WPLBN0003995279
Format Type: PDF Article :
File Size: Pages 22
Reproduction Date: 2015

Title: A Novel Tandem Differential Mobility Analyzer with Organic Vapor Treatment of Aerosol Particles : Volume 1, Issue 1 (03/09/2001)  
Author: Joutsensaari, J.
Volume: Vol. 1, Issue 1
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2001
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Vaattovaara, P., Laaksonen, A., Hämeri, K., & Joutsensaari, J. (2001). A Novel Tandem Differential Mobility Analyzer with Organic Vapor Treatment of Aerosol Particles : Volume 1, Issue 1 (03/09/2001). Retrieved from http://www.ebooklibrary.org/


Description
Description: Department of Applied Physics, University of Kuopio, P.O. Box 1627, FIN-70211 Kuopio, Finland. A novel method to characterize the organic composition of aerosol particles has been developed. The method is based on organic vapor interaction with aerosol particles and it has been named an Organic Tandem Differential Mobility Analyzer (OTDMA). The OTDMA method has been tested for inorganic (sodium chloride and ammonium sulfate) and organic (citric acid and adipic acid) particles. Growth curves of the particles have been measured in ethanol vapor and as a comparison in water vapor as a function of saturation ratio. Measurements in water vapor show that sodium chloride and ammonium sulfate as well as citric acid particles grow at water saturation ratios (S) of 0.8 and above, whereas adipic acid particles do not grow at S<0.96. For sodium chloride and ammonium sulfate particles, a deliquescence point is observed at S=0.75 and S=0.79, respectively. Citric acid particles grow monotonously with increasing saturation ratios already at low saturation ratios and no clear deliquescence point is found. For inorganic sodium chloride and ammonium sulfate particles, no growth can be seen in ethanol vapor at saturation ratios below 0.9. In contrast, for organic adipic acid particles, the deliquescence takes place at around S=0.95 in the ethanol vapor. Citric acid particles grow in ethanol vapor similarly as in water vapor; the particles grow monotonously with increasing saturation ratios and no stepwise deliquescence is observed. The results show that the working principles of the OTDMA are operational and the OTDMA method can be used to determine an organic composition of the aerosol particles. Operation of OTDMA and hygroscopicity TDMA together allows making a rough categorization of different substances found in atmospheric aerosol particles based on their growth in pure ethanol and pure water vapor.

Summary
A novel tandem differential mobility analyzer with organic vapor treatment of aerosol particles

 

Click To View

Additional Books


  • Variations of Cloud Condensation Nuclei ... (by )
  • The Temporal Evolution of Three-dimensio... (by )
  • Heterogeneous Formation of Polar Stratos... (by )
  • Wildfire Particulate Matter in Europe Du... (by )
  • Dual-wavelength Aerosol Vertical Profile... (by )
  • Determination and Climatology of the Pla... (by )
  • Bromocarbons in the Tropical Marine Boun... (by )
  • Changes of Daily Surface Ozone Maxima in... (by )
  • Spatial and Temporal Distributions of To... (by )
  • Sulfur Isotope Fractionation During Hete... (by )
  • Estimation of Aerosol Water and Chemical... (by )
  • Internal Mixing of the Organic Aerosol b... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.