| Samples | Zeff. | Nel × 1023 |
| Control | 2.766 | 3.984 |
| Pb(NO3)2-30 | 3.277 | 3.821 |
| Pb(NO3)2-50 | 3.589 | 3.821 |
| Pb(NO3)2-70 | 4.054 | 3.821 |
| PbO-30 | 3.4188 | 3.893 |
| PbO-50 | 3.800 | 3.893 |
| PbO-70 | 4.359 | 3.893 |