Research Article

Concentration Levels and Ecological Risks of Persistent Organic Pollutants in the Surface Sediments of Tianjin Coastal Area, China

Table 4

Possible effect concentration hazard quotients (PEC-HQ) for PAHs*.

PAHPEC ( g/kg)b1b2b3b4b5b6b7b8b9b10

Naphthalene561 1.371.171.040.230.160.260.130.150.140.40
Acenaphthylene1280.330.120.190.080.030.060.030.330.030.11
Acenaphthene88.93.870.870.580.570.260.380.380.240.304.03
Fluorene5360.460.150.240.390.050.150.080.070.050.48
Phenanthrene11700.250.090.270.050.030.180.050.070.030.12
Anthracene8450.060.020.070.010.010.050.010.030.010.03
Fluoranthene22300.000.030.110.040.010.120.020.150.010.00
Pyrene15200.160.040.180.050.020.140.030.130.020.05
Benzo(a)anthracene10500.070.010.040.010.000.070.000.030.000.03
Chrysene12900.060.010.090.010.010.130.010.070.010.03
Benzo(b)fluoranthene134000.000.000.000.000.000.000.000.000.000.00
Benzo(k)fluoranthene14500.060.000.070.000.000.090.010.020.000.03
Benzo(a)pyrene32000.020.000.020.000.000.040.000.010.000.01
Indeno(1,2,3-cd)pyrene1350.160.000.110.010.000.040.010.020.000.07
Dibenzo(a,h)anthracene32000.030.000.020.000.000.030.000.000.000.00

228000.120.050.100.030.010.080.020.050.010.06

*Numbers in bold indicate PEC-HQ > 1.