| Sample Code | n | Cadmium (µg/g) | Chromium (µg/g) | Nickel (µg/g) | Zinc (µg/g) |
| FS | 3 | 7.3 ± 0.5 | 0.8 ± 0.1 | 15.0 ± 1 | 13.0 ± 1 |
| FL | 3 | 3.1 ± 0.2 | 2.0 ± 0.2 | 13.0 ± 1 | 19.0 ± 1 |
| NS | 3 | 5.8 ± 0.8 | 2.7 ± 0.4 | 13.0 ± 1 | 19.0 ± 1 |
| NL | 3 | 5.6 ± 0.4 | 14.0 ± 0.1 | 20.0 ± 1 | 20.0 ± 1 |
| Fvalue |
| 33.358 | 27.074 | 32.750 | 30.750 |
| Pvalue |
| 0.000 | 0.000 | 0.000 | 0.000 |
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| Post Hoc |
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| FS vs FL |
| 0.006 | 0.011 | 0.262 | 0.008 |
| FS vs NS |
| 0.222 | 0.056 | 0.015 | 0.008 |
| FS vs NL |
| 0.046 | 0.008 | 0.015 | 0.004 |
| FL vs NS |
| 0.072 | 0.323 | 1.000 | 1.000 |
| FL vs NL |
| 0.009 | 0.071 | 0.004 | 0.767 |
| NS vs NL |
| 0.998 | 0.116 | 0.004 | 0.767 |