Chemical Composition of Fine Particulate Matter and Life Expectancy In 95 US Counties Between 2002 and 2007

摘要

Background: In a previous study, we provided evidence that a decline in fine particulate matter (PM2.5) air pollution during the period between 2000 and 2007 was associated with increased life expectancy in 545 counties in the United States. In this article, we investigated which chemical constituents of PM2.5 were the main drivers of the observed association.