Table 1 The recoveries of retinol binding protein 4 using the proposed ECL modified electrodes measured in 5 mL PBS (0.1 M, pH = 8.0)
Sample | Addition (ng mL−1) | ECL intensity (a. u.) | Found (ng mL−1) | RSD (%, n = 3) | Recovery (%, n = 3) |
|---|---|---|---|---|---|
1 | 50.00 | 1811.09 | 50.91 | 3.49 | 101.82 |
2 | 25.00 | 1973.39 | 25.09 | 4.26 | 100.36 |
3 | 5.00 | 2350.24 | 4.85 | 4.92 | 97.00 |
4 | 0.50 | 2889.39 | 0.5566 | 2.74 | 111.32 |
5 | 0.05 | 3428.54 | 0.0483 | 5.21 | 96.60 |