Abstract
The particle size distribution of sulfur has been determined in Florida during two seasons, July-August and December 1976. Approximately 120 cascade impactor samples from 10 widely distributed urban and nonurban sites in the state, each sample consisting of 6 separate particle size fractions from <0.25 μm to >4 μm aerodynamic diameter, were analyzed by proton induced X-ray emission for elemental constituents in over 800 individual specimens, including blanks. Most of the sulfur occurred in a fine particle mode, <2 μm diameter, with lesser amounts in a coarse mode, >2 μm. The mass median aerodynamic diameter, MMAD, of sulfur in the fine mode was found to be greater for samples collected under higher average relative humidity, r.h., conditions than samples from lower humidities. The trend of MMAD with r.h. indicates that ammonium sulfate, rather than sulfuric acid, is more likely to be the principal chemical form of sulfur in the fine mode.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
