Table 2. Effect of the Presence of Several Interfering Species and Its Recovery Value for the Measurement of 80 μM Paraoxon-ethyl in 0.1 M of pH 7 Phosphate Buffer.
| interferences | interference ratio level (interference/paraoxon-ethyl) | Iparaoxon-ethyl(μA) | recovery (%) |
|---|---|---|---|
| 33.19 ± 0.11 | |||
| diazinon (DZN) | 1:1 | 34.89 ± 1.50 | 105.14 |
| ascorbic acid (AA) | 1:1 | 33.33 ± 0.82 | 100.41 |
| glucose | 1:1 | 32.50 ± 1.00 | 97.93 |
| carbaryl | 1:1 | 32.82 ± 0.35 | 97.51 |
| nitrite | 1:1 | 34.90 ± 1.15 | 105.15 |
| NH4Cl | 1:1 | 33.62 ± 1.13 | 101.32 |
| NaHCO3 | 1:1 | 32.79 ± 0.34 | 98.79 |
| MgSO4 | 1:1 | 33.69 ± 0.74 | 101.52 |