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原文传递 ALLERGENS IN PAVED ROAD DUST AND AIRBORNE PARTICLES

题名：	ALLERGENS IN PAVED ROAD DUST AND AIRBORNE PARTICLES
作者：	Ann G. Miguel, Glen R. Cass, M. Michael Glovsky and Jay Weiss
关键词：	Particulate Matter, allergens. Paved Road Dust, Los Angeles Basin
摘要：	The purpose of this work was to quantify the allergen content of paved road dust and to estimate the magnitude of the road dust contribution to airborne allergen concentrations. Paved road dust present on roads in Southern California consists of a mixture of soil dust, deposited motor vehicle exhaust particles, tire dust, brake lining wear dust, plant fragments and other biological materials. Using immunological assays, which measure the allergenic proteins that bind to antibodies present in the blood serum of allergic patients, it is possible to measure allergen concentrations present in paved road dust and in airborne particulate matter samples. In this study, allergens from at least 20 different sources were found in paved road dust. These included pollen and pollen fragments, animal dander and molds, but did not include natural rubber latex allergens, which have been measured in previous studies. From 5% to 13% of the allergenicity of atmospheric total suspended particulate matter samples at Long Beach and Rubidoux, California, was attributable to resuspended paved road dust. In industrial areas of urban central Los Angeles where there is less proximity to vegetation and domestic activities, the paved road dust contribution to airborne allergen concentrations was lower, approximately 5%.
报告类型：	科技报告