Estimation of personal exposures to air pollutants for a community-based study of health effects in asthmatics - exposure model

Journal Article · Fri May 01 04:00:00 EDT 1987 · J. Air Pollut. Control Assoc.; (United States)

DOI:https://doi.org/10.1080/08940630.1987.10466246· OSTI ID:6290550

Contant, C F; Stock, T H; Buffler, P A; Holguin, A H; Gehan, B M; Kotchmar, D J

Estimates of individual personal exposure to ozone, nitrogen dioxide, pollen, temperature, and relative humidity for a group of asthmatics participating in a health effects study were obtained by means of a modelling approach utilizing fixed site monitoring data, regression relationships between fixed site and indoor and outdoor microenvironment concentrations, study subject activity patterns and study household characteristics. A considerable improvement in the accuracy of exposure assessment using the exposure model instead of fixed site measurements alone was demonstrated for ozone. This large refinement of zone exposure estimates was achieved using a simplified approach which emphasized the large differences between indoor and outdoor microenvironmental concentrations, and assumed relatively little heterogeneity in exposure within either of these two broad microenvironmental categories. Major sources of error in the exposure model for ozone include: failure to include indoor microenvironments with no air conditioning in the development of the model, inability to accurately apportion within-hour time spent in different microenvironments, and misclassification of hour-specific personal location by study subjects.

• Research Organization: Univ. of Texas School of Public Health, Houston
• OSTI ID: 6290550
• Journal Information: J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 37:5; ISSN JPCAA
• Country of Publication: United States
• Language: English

Related Subjects

500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACCURACY
AIR POLLUTION
AIR POLLUTION MONITORING
CHALCOGENIDES
DATA ANALYSIS
DISEASES
ERRORS
GAMETES
GERM CELLS
HAZARDS
HEALTH HAZARDS
INDOOR AIR POLLUTION
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
OZONE
PATIENTS
POLLEN
POLLUTION
RESPIRATORY SYSTEM DISEASES
RISK ASSESSMENT
TEMPERATURE EFFECTS