BioMed Research International

Research Article

Polycyclic Aromatic Hydrocarbons Concentrations in Drinking Water in Villages along the Huai River in China and Their Association with High Cancer Incidence in Local Population

Table 6

Descriptive statistics for deterministic and probabilistic carcinogenic risk assessment.
 MeanSEP5P50P95
Deterministic approach     
 Total7.34 × 10−69.79 × 10−71.94 × 10−74.98 × 10−61.77 × 10−5
 Control group ()5.04 × 10−66.41 × 10−71.16 × 10−74.88 × 10−61.77 × 10−5
 Risk group ()7.88 × 10−61.19 × 10−61.94 × 10−75.10 × 10−62.19 × 10−5
 Type of water     
  Surface water ()9.09 × 10−61.68 × 10−63.90 × 10−77.32 × 10−61.87 × 10−5
  Shallow groundwater ()8.03 × 10−62.05 × 10−68.54 × 10−85.15 × 10−62.19 × 10−5
  Deep groundwater ()5.19 × 10−61.22 × 10−65.90 × 10−73.22 × 10−61.20 × 10−5
Probabilistic approach ()     
 Total1.36 × 10−52.33 × 10−71.93 × 10−76.10 × 10−65.09 × 10−5
 Control group9.61 × 10−61.76 × 10−71.26 × 10−106.57 × 10−62.90 × 10−5
 Risk group1.51 × 10−53.49 × 10−71.97 × 10−75.79 × 10−65.68 × 10−5
 Type of water     
  Surface water1.63 × 10−52.19 × 10−73.72 × 10−79.34 × 10−65.43 × 10−5
  Shallow groundwater2.11 × 10−57.00 × 10−71.17 × 10−74.60 × 10−68.84 × 10−5
  Deep groundwater9.16 × 10−61.39 × 10−72.64 × 10−75.05 × 10−63.12 × 10−5