Research Article
Health Risk Assessment of Heavy Metals in Soils before Rice Sowing and at Harvesting in Southern Jiangsu Province, China
Table 6
Bioavailability of heavy metals in different digestive stages of adults and children.
| | Age | Target | Simulated gastric absorption stage (%) | Simulated intestinal absorption stage (%) | | Cd | Pb | Cu | Zn | Cd | Pb | Cu | Zn |
| | Adult | Maximum values | 2.12E-02 | 1.43E-02 | 1.65E-01 | 1.02E-01 | 4.34E-03 | 4.02E-03 | 9.07E-02 | 4.50E-02 | | Minimum values | 6.15E-03 | 9.35E-03 | 8.00E-02 | 2.67E-02 | 1.31E-03 | 1.76E-03 | 2.88E-02 | 5.73E-03 | | Average values | 1.30E-02 | 1.17E-02 | 1.20E-01 | 5.87E-02 | 2.72E-03 | 2.81E-03 | 5.54E-02 | 2.08E-02 | | PTWI | 30.00 | 107.14 | — | — | 30.00 | 107.14 | — | — |
| | Children | Maximum values | 7.93E-02 | 6.86E-02 | 4.55E-01 | 3.25E-01 | 1.62E-02 | 1.92E-02 | 2.50E-01 | 1.44E-01 | | Minimum values | 3.58E-02 | 2.82E-02 | 2.74E-01 | 1.66E-01 | 7.63E-03 | 5.32E-03 | 9.88E-02 | 3.57E-02 | | Average values | 5.59E-02 | 4.66E-02 | 3.60E-01 | 2.41E-01 | 1.17E-02 | 1.12E-02 | 1.66E-01 | 8.53E-02 | | PTWI | 30.00 | 107.14 | — | — | 30.00 | 107.14 | — | — |
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Conversion of weekly tolerance to daily tolerance. |
