Pyrite and chalcopyrite sensors applied to drinking water and H2O2 in disinfector samples.
| Sensors | Samples | Number | Measured by proposed H2O2 biosensor | Measured by KMnO4-titrated method | ||||
|---|---|---|---|---|---|---|---|---|
| Detected (μM) | Added (μM) | Found (μM) | RSDa (%) | Recovery (%) | ||||
| Pyrite | Drinking water | 1 | Not found | 50 | 51.9 | 3.5 | 103.8 | Not found |
| 2 | Not found | 100 | 98.0 | 2.6 | 98.0 | Not found | ||
| 3 | Not found | 200 | 202.1 | 2.5 | 101.1 | Not found | ||
| Disinfector samples | 1 | 100.2 | 50 | 151.9 | 2.1 | 101.1 | 99.9 | |
| 2 | 200.5 | 100 | 302.3 | 2.7 | 100.6 | 200.2 | ||
| 3 | 299.3 | 200 | 494.5 | 1.9 | 99.0 | 299.5 | ||
| Chalcopyrite | Drinking water | 1 | Not found | 50 | 53.5 | 4.8 | 107.0 | Not found |
| 2 | Not found | 100 | 97.4 | 3.7 | 97.4 | Not found | ||
| 3 | Not found | 200 | 203.9 | 4.0 | 102.0 | Not found | ||
| Disinfector samples | 1 | 99.6 | 50 | 153.1 | 3.8 | 102.3 | 99.3 | |
| 2 | 200.1 | 100 | 305.0 | 3.5 | 101.6 | 199.8 | ||
| 3 | 300.5 | 200 | 492.0 | 4.2 | 98.3 | 300.1 | ||
a
RSD (%) calculated from three separate experiments.