Table 1.
Parameters of the analytical procedure: recoveries for certified reference materials (CRMs, n = 10) with relative standard deviation (RSD) of 10 replicates
| Metals | Wavelength λ (nm) | LoD (mg/L) | LoQ (mg/L) | Recovery (%) | RSD (%) |
|---|---|---|---|---|---|
| Ca | 422.7 | 0.0642 | 0.514 | 108.2 | 6.6 |
| Cd | 228.8 | 0.0621 | 0.010 | 91.6 | 4.3 |
| Cu | 324.8 | 0.0876 | 0.035 | 99.6 | 2.7 |
| Fe | 248.3 | 0.005 | 0.415 | 101.6 | 6.2 |
| Hga | 253.7 | – | 0.27 | 97.1 | 2.6 |
| Mg | 285.2 | 0.00015 | 0.017 | – | – |
| Ni | 232.00 | 0.006 | 0.013 | – | – |
| Pb | 217.0 | 0.1039 | 0.107 | 93.7 | 6.2 |
| Zn | 213.9 | 0.0170 | 0.024 | 106.2 | 5.3 |
For Cd and Pb, ERMCE195 CRM were used; for Hg, BCR-463 CRM was used and for other elements, SRM1577b; no appropriate CRM for Mg and Ni were found
LoD limits of detection (in solution), LoQ limits of quantification established for wine samples
aLoQ value for Hg expressed as a nanograms per liter