| Origin/year | Number of samples | Cadmium content (μg/kg) | SD | Detection rate/% | Over standard rate/% | ||
| Average value | Maximum value | Minimum value | |||||
| S1 | 10 | 1.20 | 2.35 | 0.50 | 0.71 | 60.0 | 0.0 |
| S2 | 10 | 0.77 | 1.52 | 0.50 | 0.44 | 30.0 | 0.0 |
| S3 | 10 | 1.75 | 5.19 | 0.50 | 1.38 | 70.0 | 0.0 |
| S4 | 10 | 1.32 | 3.22 | 0.50 | 0.87 | 70.0 | 0.0 |
| S5 | 10 | 15.25 | 18.90 | 11.85 | 2.10 | 100.0 | 0.0 |
| S6 | 10 | 0.50 | 0.50 | 0.50 | 0.00 | 0.0 | 0.0 |
| S7 | 10 | 0.58 | 1.30 | 0.50 | 0.25 | 10.0 | 0.0 |
| 2019 | 50 | 4.06 | 18.90 | 0.50 | 5.79 | 66.0 | 0.0 |
| 2020 | 20 | 0.54 | 1.30 | 0.50 | 0.18 | 5.0 | 0.0 |
| 2019-2020 | 70 | 3.05 | 18.90 | 0.50 | 5.13 | 48.6 | 0.0 |