Exposure to Elemental Carbon, Organic Carbon, Nitrate, and Sulfate Fractions of Fine Particulate Matter and Risk of Preterm Birth in New Jersey, Ohio, and Pennsylvania (2000–2005)

摘要

Background: Particulate matter ≤ 2.5 μm in aerodynamic diameter (PM_2.5) has been consistently associated with preterm birth (PTB) to varying degrees, but roles of PM_2.5 species have been less studied. Objective: We estimated risk d