Table 2: Calculated values of the concentrations c, extinction E at 400 nm and extinction coefficient of Se at 400 nm.
| Sample | c (Se)/× 10-4 mol/l | c (Se-NP)/× 10-9 mol/l | E (400 nm) | ε (Se, 400 nm)/l•(mol•cm)-1 | ε (Se-NP, 400 nm)/l•(mol•cm)-1 |
| 1 | 1.78 | 9.69 | 0.262 | 1.47 × 103 | 2.70 × 107 |
| 2 | 1.13 | 6.16 | 0.148 | 1.31 × 103 | 2.40 × 107 |
| 3 | 1.01 | 5.52 | 0.165 | 1.63 × 103 | 2.99 × 107 |
| 4 | 1.26 | 6.89 | 0.168 | 1.33 × 103 | 2.44 × 107 |