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Mass balance (%) of the total Au for all the mixtures after SDGC determined by conventional ICP-MS in the ePNC and eMF conditions. Each datum is expressed as the ratio of the sum of the Au content found in every layer to the initial Au content contained in the suspension of AuNPs introduced to the gradient
| Mixture | ePNC (%) | eMF (%) |
|---|---|---|
| Mixture 1 | 104.4 ± 9.0 | 98.2 ± 2.3 |
| Mixture 2 | 103.1 ± 5.2 | 95.9 ± 0.8 |
| Mixture 3 | 95.8 ± 9.6 | 95.2 ± 1.1 |
Uncertainties correspond to single standard deviations
