Controlled Exposures of Healthy and Asthmatic Volunteers to Concentrated Ambient Particles in Metropolitan Los Angeles;Research rept. Aug 98-May 02

摘要

Epidemiologic studies report health effects associated with exposure to ambient particulate matter, but underlying biologic mechanisms remain unclear. The authors evaluated pulmonary and systemic effect sin twelve healthy human adult and twelve asthmatic volunteers exposed once for 2 hours in a whole-body chamber to approximately 200 micrograms/cubic meter concentrated ambient particles (CAPs) in the line (<2.5 micrometers) size range and once to filtered air.