Table 1 Description of the necessary factors for health risk assessment of heavy metals.
Parameter | symbol | Unit | Amount |
|---|---|---|---|
Heavy metals daily intake | EDI | Mg/kg body weight day | Calculated according to Eq. 1 |
Exposure frequency | EF | Day | 365 |
Exposure duration | ED | Year | 54 |
Vegetable ingestion rate | IR | g per person per day | 58 |
Contaminant concentrations in vegetables | CP | Mg/kg dry weight | Concentrations of metals and nitrates based on ICP and spectrophotometry results |
Oral reference dose | (Rfd) | Mg/kg body weight | For Pb, As and CD are 03-E5, 04-E3, and 03-E1, respectively For nitrate, this amount is 3.75 |
Average body weight of consumers | BW | Kg | 77.1 ± 14.6 |
Meantime to produce carcinogenic and non-carcinogenic effects | AT | Day | 54 × 365 |
Cancer slope factor | CSF | No unit | 1.5 |
