TABLE 2.
Bacterial counts on hydrophilic and hydrophobic QCM crystal surfaces after 30 min of attachment at various ionic strengthsa
| Ionic strength (M) | No. of attached cells (106) per cm2 on crystal surfaces
|
|||
|---|---|---|---|---|
| Hydrophilic
|
Hydrophobic
|
|||
| MS7fim− | MS7fim+ | MS7fim− | MS7fim+ | |
| 0.06 | 1.8 ± 0.7 | 0.8 ± 0.6 | 1.0 ± 0.3 | 0.4 ± 0.3 |
| 0.1225 | 3.0 ± 0.9 | 2.4 ± 2.1 | 0.6 ± 0.3 | 1.1 ± 0.4 |
| 0.185 | 3.7 ± 0.5 | 2.0 ± 0.7 | 0.5 ± 0.4 | 1.2 ± 0.8 |
| 0.31 | 3.1 ± 0.4 | 1.6 ± 0.7 | 0.4 ± 0.2 | 1.2 ± 0.4 |
| 0.56 | 2.2 ± 0.4 | 1.7 ± 0.9 | 0.3 ± 0.2 | 0.9 ± 0.4 |
a
The applied cell concentration in the experiment was approximately 3 × 108 cells ml−1. Data are means ± standard deviations from three to four experiments.