Volatility of Aerosols in the Western European Environment.
Abstract
Volatility measurements of ambient aerosol particles were made nearly continuously at Mace Head Field Station over the period 10-11 March 1988. The air containing the particles was drawn through the fused quartz tube heated to a temperature of 400 C in about 6 minutes, then allowed to cool for about 44 minutes to a temperature close to ambient and the cycle repeated. A fraction of the particles evaporate and the remainder and/or particle residues then pass through a short section of unheated tubing into a light scattering aerosol counter (a Particle Measuring Systems Model ASASP-X) where their size and number concentration are measured as a function of temperature. This data is replotted showing temperature dependence of maritime aerosol concentration in Fig.8 for five temperature cycles for the later time period for particle counter ranges 3 to 0. The resulting average fractionation curves for submicron particles compare favourably with laboratory data for ammonium sulphate (and ammonium bisulphate). This suggests that these materials are a major constituent of the submicron fraction of maritime aerosols. (JES)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1988
- Accession Number
- ADA195792
Entities
People
- S. G. Jennings
Organizations
- University of Galway