Table 1.
Summary of PAHs concentrations in different land use types in Beijing and Tianjin.
Table 2.
TEFs used in calculating the carcinogenic potency.
Table 3.
Exposure parameters used in the incremental lifetime cancer risk (ILCR) assessment.
Fig 1.
Cross plots for PAH isomeric ratios in surface soils in urban (a, b), suburban (c, d) and rural area (e, f). The calculations of source ratios followed the methods described by Yunker et al [15].
Table 4.
The total variance explained and component matrix of PAHs in different land use types in Beijing and Tianjin.
Fig 2.
Source profiles of each PMF factor for PAHs in urban soils (a), suburban soils (b) and rural soils (c).
Fig 3.
Source contributions to BaPTEQ for PAHs in urban soils (a), suburban soils (b) and rural soils (c).
Fig 4.
Predicted probability density functions of incremental lifetime cancer risk (ILCR) for adults exposed to the PAHs in urban soils (a), suburban soils (b) and rural soils (c).