Air-toxics exposure and risk in the South Coast Air Basin

Thesis/Dissertation · Wed Dec 31 23:00:00 EST 1986

OSTI ID:6995867

Nelson, E D.P.

Research was conducted to quantify the magnitude of population exposure from point and area source emissions of twenty toxic air pollutants on an annual average basis in the South Coast Air Basin. Carcinogenic health risks due to those pollutants which are potential carcinogens were estimated through the measurement of ambient concentrations and the development and application of an urban air toxics exposure and risk-assessment model. The approach integrates ambient concentration, population distribution, and health-risk data for individual chemical species into regional estimates of inhalation exposure, risk, and number of excess cancer cases. The enhanced Human Exposure Model can be used to apportion the estimated number of excess cancer cases by source category and by pollutant and to identify high-risk chemical species and source categories. It can also be applied for the identification of high-risk locations and for the estimation of control measure effectiveness in reducing exposure, cancer risk and number of excess cancer cases. A linear response relationship is assumed, and the exposure and risks associated with multiple sources and species of air toxics are considered additive. Risks were calculated only for inhalation of ambient air throughout a 70-year lifetime.

• Research Organization: California Univ., Los Angeles (USA)
• OSTI ID: 6995867
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AIR QUALITY
CALIFORNIA
CARCINOGENS
COASTAL REGIONS
ENVIRONMENTAL EXPOSURE
ENVIRONMENTAL QUALITY
FEDERAL REGION IX
FUNCTIONAL MODELS
HAZARDS
HEALTH HAZARDS
MATERIALS
NORTH AMERICA
POLLUTION
RISK ASSESSMENT
TOXIC MATERIALS
USA