Table 1.
Accuracy control of the analytical procedures for the assessment of macroelements and trace elements *.
| Element | Certified | Measured | Unit |
|---|---|---|---|
| MACROELEMENTS | |||
| Ca | 0.62 ± 0.05 | 0.62 ± 0.09 | g·kg−1 |
| K | 18.9 ± 1.1 | 17.0 ± 0.5 | “ |
| Mg | 1.05 ± 0.05 | 1.15 ± 0.05 | “ |
| Na | 5.06 ± 0.07 | 5.72 ± 0.17 | “ |
| P | 9.9 ± 0.1 | 10.6 ± 0.5 | “ |
| S | 8.9 ± 0.5 | 8.5 ± 0.2 | “ |
| TRACE ELEMENTS | |||
| As | 18.0 ± 1.1 | 17.3 ± 1.8 | mg·kg−1 |
| Ba | 2.34 ± 0.03 | 2.4 ± 0.3 | “ |
| Cd | 0.043 ± 0.008 | 0.038 ± 0.002 | “ |
| Co | 0.182 ± 0.031 | 0.16 ± 0.02 | “ |
| Cu | 2.34 ± 0.16 | 1.92 ± 0.23 | “ |
| Fe | 142 ± 10 | 105 ± 15 | “ |
| Pb | 0.065 ± 0.007 | 0.047 ± 0.007 | “ |
| Mn | 3.66 ± 0.34 | 3.02 ± 0.29 | “ |
| Se | 1.40 ± 0.09 | 1.41 ± 0.12 | “ |
| Sn | 0.023 ± 0.001 | 0.026 ± 0.009 | “ |
* Data expressed as mean value ± standard deviation (n = 4). Certified reference material was DORM-2 (National Research Council of Canada (NRCC)), where macroelements and Ba values were reported by Engström et al. [32].