Human exposure to sulfur dioxide and ozone in a high temperature-humidity environment
In order to examine the role of high temperature and humidity in the possible synergistic action of ozone and sulfur dioxide on human pulmonary function previously reported by some investigators and repudiated by others, we randomly exposed eight healthy young nonsmokers to filtered air, 0.4 ppm SO/sub 2/, 0.4 ppm 0/sub 3/, and 0.4 ppm SO/sub 2/ plus 0.4 ppm 0/sub 3/. Subjects exercised for 15 minutes of each half hour at a workload sufficient to elicit a minute ventilation of 30 liters (BTPS). Pulmonary function tests were performed prior to, during, and following exposure. Observed alterations in pulmonary functions in the SO/sub 2/ + 0/sub 3/ exposure reflected the changes occurring during the 0/sub 3/ exposure, clearly indicating that no synergistic effects related to the additional presence of SO/sub 2/ were evident in this study. We considered factors suggested as causes for a potential synergism in comparing the conflicting studies on 0/sub 3/ and SO/sub 2/, and suggest that factors other than temperature-humidity and/or sulfate aerosol production must be sought.
- Research Organization:
- Univ. of California, Santa Barbara
- OSTI ID:
- 7064982
- Journal Information:
- Am. Ind. Hyg. Assoc. J.; (United States), Journal Name: Am. Ind. Hyg. Assoc. J.; (United States) Vol. 43:1; ISSN AIHAA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Pulmonary function effects of 1. 0 and 2. 0 ppM sulfur dioxide exposure in active young male non-smokers
Interaction of two air pollutants, sulfur dioxide and ozone on lung functions. Report for 29 Sep 75-31 Mar 77
Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
BIOLOGICAL EFFECTS
BODY
CHALCOGENIDES
HUMIDITY
LUNGS
MAMMALS
MAN
ORGANS
OXIDES
OXYGEN COMPOUNDS
OZONE
PRIMATES
RESPIRATORY SYSTEM
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SYNERGISM
TEMPERATURE EFFECTS
VERTEBRATES