Table 2.
Limiting current from voltammetry at exposed microelectrodes
| # of 7.5 Minute Exposures | 2 | 4 | 6 |
|---|---|---|---|
| Capacitive Current (0.1 V) | 0.23 ± 0.03 nA (48)b | 0.38 ± 0.08 nA (20) | 0.51 ± 0.09 nA (15) |
| Ferrocyanide current (1 V, anodic) | 2.04a ± 0.15 nA (48) | 2.45 ± 0.36 nA (20) | 2.37 ± 0.34 nA (15) |
| H2Q current (1.2 V, anodic) | 7.57 ± 1.13 nA (9) | 12.75 ± 4.68 nA (9) | 13.65 ± 5.40 nA (9) |
| RH current (−0.5 V, cathodic) | 4.30 ± .64 nA (9) | 8.40 ± 3.08 nA (9) | 10.75 ± 4.25 nA (9) |
a
The values for ferricyanide are the average of all the microelectrodes that had the specified light exposure. The values for H2Q and RH are the average of a few randomly selected microelectrodes that had the specified light exposure.
b
error is standard deviation of the mean, number of electrodes in parentheses.