Table 1. Predicted air concentrations and 95% confidence intervals (in parentheses) of nine PAHs (ng/m3) measured at Ground Zero and 290 Broadway on tj = 3, 100 and 200 d after September 11, 2001
Ground Zero (n = 170)
290 Broadway (n = 73)
Los Angeles (1998-2002)
Teplice* (Winter 1993-1994)
Compound tj = 3 tj = 100 tj = 200 tj = 3 tj = 100 tj = 200
Benz(a)anthracene 1.3 (0.18, 2.8) 0.17 (0.14, 0.20) 0.16 (0.13, 0.19) 0.40 (0.00, 0.92) 0.03 (0.02, 0.04) 0.02 (0.01, 0.03) 5.8 (5.1, 6.5)
Chrysene 1.5 (0.24, 2.4) 0.16 (0.14, 0.19) 0.15 (0.12, 0.18) 0.37 (0.00, 0.79) 0.04 (0.03, 0.05) 0.03 (0.01, 0.04) 7.5 (6.6, 8.4)
Benzo(b)fluoranthene 15 (0.82, 29) 0.53 (0.43, 0.63) 0.25 (0.14, 0.35) 5.6 (0.00, 13) 0.36 (0.25, 0.46) 0.07 (0.02, 0.12) 0.17 (0.14, 0.19) 6.2 (5.4, 6.9)
Benzo(k)fluoranthene 4.8 (0.72, 9.0) 0.31 (0.26, 0.36) 0.23 (0.17, 0.29) 1.7 (0.00, 3.6) 0.12 (0.09, 0.16) 0.05 (0.02, 0.07) 0.07 (0.06, 0.08) 4.0 (3.5, 4.5)
Benzo(e)pyrene 7.0 (1.6, 12) 0.42 (0.35, 0.49) 0.30 (0.22, 0.38) 4.1 (0.00, 8.2) 0.21 (0.15, 0.27) 0.09 (0.05, 0.13) 4.7 (4.2, 5.3)
Benzo(a)pyrene 2.2 (0.07, 4.4) 0.44 (0.36, 0.52) 0.34 (0.25, 0.43) 1.0 (0.00, 2.4) 0.17 (0.12, 0.23) 0.07 (0.03, 0.11) 0.11 (0.04, 0.18) 6.0 (5.3, 6.8)
Indeno(1,2,3-c,d)pyrene 4.0 (0.06, 7.9) 0.57 (0.47, 0.68) 0.31 (0.19, 0.43) 1.5 (0.00, 3.2) 0.39 (0.28, 0.50) 0.13 (0.06, 0.21) 0.23 (0.19, 0.27) 6.0 (5.3, 6.7)
Dibenz(a,h)anthracene 1.3 (0.00, 2.9) 0.10 (0.08, 0.12) 0.03 (0.01, 0.06) 0.69 (0.00, 1.7) 0.08 (0.06, 0.11) 0.01 (0.00, 0.03) 0.03 (0.02, 0.03) 2.1 (1.9, 2.4)
Benzo(g,h,i)perylene 4.1 (0.00, 8.8) 1.1 (0.93, 1.3) 0.85 (0.60, 1.1) 1.3 (0.00, 3.1) 0.68 (0.49, 0.87) 0.40 (0.23, 0.58) 0.50 (0.42, 0.57) 5.3 (4.7, 6.0)
  • Air concentrations in Los Angeles, CA (California Air Resources Board data), and Teplice, Czech Republic (21, 22), are shown for comparison.

  • * Confidence intervals estimated by imputing variances from Dejmek et al. (22).

  • Chrysene/triphenylene.

  • Benzo(k+j)fluoranthene.