Table 2.
Analysis of elements released from stir bars incubated in buffer. Tris buffer. 71.2 mm2 Metglas (400 bars; 400 μm × 200 μm × 15 μm each) was incubated with 200 μl buffer (50 mM Tris-HCl (pH 8.0), 100 mM NaCl) for 15 minutes. Values in table following subtraction of the concentration of each element in a control sample containing only buffer.
| Element | Uncoated bars, concentration (μM) | SiON coated/PEGylated bars, concentration (μM) |
|---|---|---|
| B | < 0.93 | 35 |
| Si | 28.5 | < 3.5 |
| Fe | < 1.79 | < 1.79 |
| Co | 160 | 10.5 |
| Ni | 3.58 | < 1.7 |