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Mass spectrographic quantification of total copper and iron in staining solutions
| Sample | Total Copper | Total Iron | ||
|---|---|---|---|---|
| Concentration (nM) | Uncertainty (nM) | Concentration (nM) | Uncertainty (nM) | |
| PBS in Water | 20.5 | 7.9 | 462. | 140. |
| Formalin + PBS (“A”, lot #070806) | 258. | 11.0 | 634. | 66.0 |
| Formalin + PBS (“B”, lot #080822) | 33.0 | 7.9 | 337.0 | 72.0 |
Note: Total metal concentrations include all ionic forms. Lot “A” and “B” refer to the designations shown in Figure 1.
