Table 3 Hazard quotients of all trace elements and cancer risks of Cd, Cr, and Pb in the study area.
Elements | RfDingestiona(μg/kg/day) | RfDdermalb(μg/kg/day) | SFc(mg/kg/day) | HQingestiond | HQdermale | HQf | CRg |
|---|---|---|---|---|---|---|---|
Ba | 70 | 14 | — | 1.23 × 10−1 | 1.11 × 10−3 | 1.25 × 10−1 | |
Cd | 0.5 | 0.005 | 6.1 | 1.28 × 10−3 | 2.31 × 10−4 | 1.52 × 10−3 | 3.92 × 10−6 |
Co | 0.3 | 0.0003 | — | 1.23 × 10−2 | 8.86 × 10−3 | 2.12 × 10−2 | |
Cr | 3.0 | 0.015 | 0.5 | 3.34 × 10−2 | 2.40 × 10−2 | 5.74 × 10−2 | 5.00 × 10−5 |
Cu | 40 | 12 | — | 1.63 × 10−4 | 9.79 × 10−7 | 1.64 × 10−4 | |
Fe | 300 | 45 | — | 1.76 × 10−3 | 2.11 × 10−5 | 1.78 × 10−3 | |
Mn | 20 | 0.8 | — | 1.20 × 10−1 | 5.41 × 10−3 | 1.25 × 10−1 | |
Mo | 5 | 1.9 | — | 2.48 × 10−3 | 1.18 × 10−5 | 2.49 × 10−3 | |
Ni | 20 | 5.4 | — | 1.99 × 10−3 | 2.66 × 10−6 | 2.00 × 10−3 | |
Pb | 1.4 | 0.42 | 0.055 | 5.19 × 10−2 | 3.11 × 10−4 | 5.22 × 10−2 | 4.00 × 10−6 |
Se | 5 | 2.2 | — | 5.26 × 10−2 | 2.15 × 10−4 | 5.28 × 10−2 | |
Zn | 300 | 60 | — | 7.45 × 10−3 | 4.02 × 10−5 | 7.49 × 10−3 | |
HIh/TCRi | 4.09 × 10−1 | 4.02 × 10–2 | 4.49 × 10−1 | 5.79 × 10−5 |
