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Average recovery of Cr, Cd, Pb, Ni and As from bottled water samples within 3 days.
| Element/Concentration | Cr | Cd | Pb | Ni | As | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spike level (ng g−1) | 0.5 | 1 | 2 | 1.5 | 3 | 4.5 | 5 | 10 | 15 | 10 | 20 | 40 | 5 | 10 | 15 |
| Mean result (ng g−1) | 0.51 | 0.99 | 1.9 | 1.3 | 2.5 | 4.2 | 5.2 | 9.6 | 14.5 | 11 | 23 | 37.1 | 5.3 | 10.4 | 14.5 |
| Mean recovery (%) | 103 | 99 | 96 | 90 | 85 | 94 | 104 | 96 | 97 | 110 | 115 | 92.7 | 106 | 104 | 97 |
