One of the most extensive studies of the link between lower respiratory diseases and ambient concentrations of polycyclic aromatic hydrocarbons(PAHs),a class of widespread air pollutants,has found that the chemicals are a potent problem for preschool-age children [EHP 115:1510-1518;Hertz-Picciotto et al.].The team of researchers also found that fine particles(PM_(2.5))pose a respiratory risk to very young children.
展开▼
