Atmospheric Sulfur Aerosol Concentrations and Characteristics from the South American Continent

Aerosol samples collected from eight geographically distinct locations in South America during the austral winter of 1976 and summer of 1977 with six-stage cascade impactors show a tropospheric sulfur background concentration of about 50 nanograms per cubic meter of air in the fine-particle mode (&l...

Full description

Saved in:
Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1979-09, Vol.205 (4412), p.1267-1269
Main Authors: Lawson, Douglas R., Winchester, John W.
Format: Article
Language:English
Subjects:
Aerosols
Air pollution
Air sampling
Atmospherics
Environmental pollution
Northern hemisphere
Ocean pollution
Sulfur
Summer
Winter
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Aerosol samples collected from eight geographically distinct locations in South America during the austral winter of 1976 and summer of 1977 with six-stage cascade impactors show a tropospheric sulfur background concentration of about 50 nanograms per cubic meter of air in the fine-particle mode (< 1 micrometer in aerodynamic diameter). Time-sequence filter samples, taken concurrently at most locations, show an average non-sea spray related sulfur concentration of about 85 nanograms per cubic meter. These concentrations are substantially lower than most published nonurban values for the Northern Hemisphere obtained by similar sampling and analysis techniques and may represent a natural tropospheric background level of aerosol sulfur.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.205.4412.1267