Table 7.
Cd, Pb, Cr, As, and Zn concentrations of the investigated antidiabetic herbal preparations.
| Drug code | Metal concentration (ppm) | ||||
|---|---|---|---|---|---|
| Cd | Pb | Cr | As | Zn | |
| S 1 | BDL | BDL | BDL | BDL | 0.74 ± 1.1 |
| S 2 | BDL | BDL | BDL | BDL | 1.03 ± 1.1 |
| S 3 | BDL | BDL | BDL | BDL | 2.33 ± 1.1 |
| S 4 | BDL | BDL | BDL | BDL | BDL |
| S 5 | 3.95 ± 0.5 | 593 ± 8 | 63.5 ± 2.3 | 2.09 ± 0.1 | 1957 ± 27 |
| S 6 | 1.34 ± 0.4 | 237 ± 6 | 19.8 ± 1.7 | 0.72 ± 0 | 885 ± 37 |
| S 7 | 0.33 ± 0.4 | 128 ± 6 | 11.9 ± 11.8 | 0.32 ± 0 | 4755 ± 79 |
| S 8 | 7.68 ± 0.6 | 895 ± 9 | 101 ± 3 | 2.09 ± 0 | 4980 ± 62 |
| S 9 | 3.88 ± 0.5 | 16627 ± 169 | 6.66 ± 2.5 | 2.05 ± 0 | 3597 ± 55 |
| S 10 | 11.4 ± 0.5 | 2844 ± 36 | 107 ± 2 | 6.27 ± 0.2 | 6507 ± 96 |
| S 11 | 3.44 ± 0.5 | 779 ± 8 | 39.8 ± 2.3 | 1.95 ± 0.1 | 5926 ± 103 |
| S 12 | 0.11 ± 0.5 | BDL | 3.01 ± 2.4 | 0.11 ± 0 | 8978 ± 112 |
| S 13 | BDL | 3.91 ± 2.2 | BDL | 0.23 ± 0 | 45.2 ± 2 |
| S 14 | BDL | BDL | BDL | BDL | 13.8 ± 1.1 |
| S 15 | BDL | BDL | BDL | BDL | 36.9 ± 1.1 |
| S 16 | BDL | 4.54 ± 2.1 | BDL | BDL | 7.86 ± 1 |
| S 17 | BDL | 74.9 ± 2.2 | 4.32 ± 3 | 0.11 ± 0 | 239 ± 4 |
| S 18 | 1.18 ± 0 | 229 ± 2 | 9.74 ± 3.3 | 0.80 ± 0 | 741 ± 23 |
| S 19 | BDL | BDL | 21.7 ± 3.1 | 0.07 ± 0 | 42.9 ± 1.1 |
| S 20 | 0.33 ± 0.5 | BDL | 3.84 ± 2.1 | BDL | 114 ± 2 |
| S 21 | BDL | 13.4 ± 2.7 | BDL | BDL | 46.4 ± 1.3 |
| S 22 | 0.30 ± 0.3 | 5.62 ± 2.9 | 2.42 ± 3.9 | BDL | 121 ± 3 |
| S 23 | BDL | BDL | 3.37 ± 2.4 | BDL | 107 ± 2 |
| S 24 | 0.13 ± 0.2 | BDL | BDL | BDL | BDL |
| MRL | 0.06 | 0.10 | 0.05 | 0.02 | 15 |
BDL = detection limit and MRL = maximum residual limit.