PMC

Change in DBP at 2-hr exposure to approximately 150 μg/m³ of CAP+O₃ versus the estimated exposure mass concentration of the organic carbon fraction of CAP (shown as 2-hr – 0-hr linear change). The solid line indicates the regression line. y = 10.8 ln(x) – 28.8; r = 0.53; p = 0.009; n = 23.