Table 3.
Surface collection efficiency (fractional, mean ± 1σ) | |||||||
---|---|---|---|---|---|---|---|
Mid-point dp (nm) | V0=3.7 cm/s, D0=0.29 μm | Number of particles | V0=3.7cm/s, D0=0.72μm | Number of particles | V0=18.4 cm/s, D0 = 0.72 μm | Number of particles | p-value* |
24 | 0.41 ± 0.04 | 867 | 0.54 ± 0.09 | 574 | 0.20 ± 0.02** | 311 | 0.001 |
42 | 0.22 ± 0.08 | 558 | 0.27 ±0.03*** | 417 | 0.15 ± 0.02*** | 249 | 0.065 |
75 | 0.22 ± 0.03 | 409 | 0.27 ± 0.03 | 329 | 0.22 ± 0.04 | 307 | 0.252 |
133 | 0.42 ± 0.05 | 270 | 0.49 ± 0.06 | 218 | 0.42 ± 0.07 | 252 | 0.296 |
237 | 0.83 ±0.04 | 197 | 1.09 ±0.25 | 193 | 0.88 ± 0.08 | 190 | 0.155 |
p-value for the ANOVA testing whether significant differences existed between any two sets of experimental conditions.
Denotes collection efficiency significantly different (per Tukey’s test) than other collection efficiencies in same size bin.
Denotes collection efficiencies significantly different (per Tukey’s test) from each other.