Table 5.
Ranges of cadmium and lead concentrations from studies conducted in different countries.
| Country | Cadmium content (mg/kg) |
Lead content (mg/kg) |
Reference | ||
|---|---|---|---|---|---|
| Tomato | Lettuce | Tomato | Lettuce | ||
| Ecuador (Quito) | 0.009–0.058 | 0.002–0.034 | 0.041–0.209 | 0.010–0.066 | The present study |
| <0.050–0.660* | <0.050–0.565* | <0.250–2.327* | <0.250–1.182* | ||
| Ecuador (Quito) | -- | 0.008–0.019 | -- | 0.0011–0.027 | [31] |
| Ecuador (Quito) | 0.008–0.024 | 0.004–0.005 | 0.001–0.004 | 0.031–0.273 | [32] |
| Croatia (Varaždin) | -- | 0.97–1.52* | -- | 0.82–2.22* | [1] |
| Argelia | -- | 26.99* | -- | -- | [5] |
| Chile (metropolitan region) | -- | -- | <0.014–0.057 | <0.143–0.208 | [33] |
| Brazil (Belo Horizonte) | -- | -- | 0.009* | 0.037* | [19] |
| Brazil (Pernambuco) | -- | -- | <0.01 | <0.06 | [34] |
| Spain (Barcelona) | -- | -- | <0.005 | 0.0080–0.0244 | [35] |
| Spain (Valencia) | 0.0055 | 0.0098 | 0 | 0.0038 | [45] |
| India (Amravati) | 0.2* | 5.5* | -- | -- | [36] |
| India (Nashik) | 0.90* | 2.20* | -- | -- | [37] |
| India (Andhra Pradesh) | 0.0193 | -- | 0.3 | -- | [46] |
| USA (Florida) organic products | 0.00093 | 0.00495 | 0.01450 | 0.0120 | [38] |
| USA (Florida) nonorganic products | 0.0043 | 0.00772 | 0.00487 | 0.0253 | |
| Jamaica | 0.266 | -- | 0.021 | -- | [44] |
*
Dry weight.