Table 1 Determination of ferricyanide concentration (µM) in real water samples. Three samples were prepared in each test.
Samples | Spiked | Measured | Recovery (%) | RSD, n = 3 (%) |
---|---|---|---|---|
Tap water | 0 | 6.6 | — | 2.9 |
40 | 44.4 | 94.1 | 5.3 | |
80 | 82.1 | 94.5 | 2.3 | |
Lake water | 0 | 4.9 | — | 2.4 |
40 | 42.8 | 95.0 | 1.6 | |
80 | 80.5 | 94.6 | 1.3 |