Table 1 Calculation of the values of the α-NiS nanosphere films for detecting 20 μM glucose for average stability, standard deviation (SD), and reusability
Time of test | Average of the initial current at 1 s (mA) | Stability of specimen 1 at 1 min (mA/min) | Stability of specimen 2 at 1 min (mA/min) | Average value of stability 13 and 14 times (mA/min) | Standard deviation (SD) value 13 and 14 times (mA/min) | Reusability (SD ≤ 0.002) |
---|---|---|---|---|---|---|
1st | 0.442 | 0.003 | 0.004 | |||
2nd | 0.444 | 0.003 | 0.004 | |||
3rd | 0.440 | 0.004 | 0.005 | |||
4th | 0.443 | 0.004 | 0.006 | |||
5th | 0.441 | 0.005 | 0.006 | |||
6th | 0.439 | 0.004 | 0.007 | |||
7th | 0.438 | 0.005 | 0.007 | |||
8th | 0.441 | 0.005 | 0.008 | 0.006/0.011 | 0.002/0.019 | 13 |
9th | 0.439 | 0.005 | 0.008 | |||
10th | 0.438 | 0.005 | 0.009 | |||
11th | 0.437 | 0.006 | 0.009 | |||
12th | 0.436 | 0.008 | 0.010 | |||
13th | 0.434 | 0.009 | 0.011 | |||
14th | 0.391 | 0.069 | 0.084 | |||
15th | 0.308 | 0.109 | 0.128 |