Table II.
CTV analysis of PSM and spores.
| Particles | Treatment | Experiment | Mean settling velocity (μm/s) | Mean magnetic velocity (μm/s) | Mean diameter (μm) | Mean magnetic susceptibly × 106 |
|---|---|---|---|---|---|---|
| PSM | NA | Mean N = 4 | 4.97 ± 0.46 | −0.430 ± 0.092 | 15.3 ± 0.72 | −9.28 ± 0.0686 |
| Mixed with spores | Mean N = 4 | 5.11 ± 0.243 | −0.421 ± 0.132 | −9.26 ± 0.0746 | ||
| Bacillus atrophaeus spores | NA | Mean N = 6 | 3.57 ± 1.27 | 36.9 ± 8.31a | 5.85 ± 1.12 | 143 ± 38 |
| Mixed with PSM | Mean N = 4 | −2.88 ± 1.21 | 37.2 ± 7.49 | 5.06 ± 1.10 | 186 ± 52 | |
| Detergent effect | Control | 0.778 | 25.7 | 5.85 | 437 | |
| EDTA treatment | 1.03 | 5.58 | 3.08 | 6.26 | ||
| Triton treatment | 0.552 | 7.70 | 2.25 | 175 | ||
| Tween treatment | 0.502 | 6.81 | 2.15 | 170 | ||
| pH effect | Control | 3.91 | 39.3 | 6.0 | 133 | |
| 5.0 | 4.60 | 6.86 | 6.4 | 19.7 | ||
| 4.0 | 4.51 | 6.73 | 6.4 | 19.7 | ||
| 3.0 | 3.15 | 27.3 | 5.4 | 115 | ||
| 2 | 1.85 | 0.715 | 4.1 | 5.11 | ||
| 1.2 | 1.34 | 1.07 | 3.96 | 5.44 | ||
| 0.6 | 2.64 | 3.94 | 4.26 | 6.35 |
a
Both the permanent and electromagnet CTV was used for these measurements, four with the permanent, and two with the electromagnet. No significant difference was observed.