Table 1.
Properties of laser printer–emitted particle dispersions.
| Material/media | dH (nm) | PdI | ζ (mV) | σ (mS/cm) | ρagg (g/cm3) |
|---|---|---|---|---|---|
| PEPs (PM0.1) | |||||
| DI H2O | 178.3 ± 3.459 | 0.403 ± 0.050 | –20.6 ± 1.87 | 0.185 ± 0.00058 | — |
| RPMI/10% HS | 272.5 ± 22.27 | 0.688 ± 0.178 | –9.80 ± 1.31 | 3.61 ± 0.246 | 1.19 |
| RPMI/10% FBS | 227.3 ± 105.0 | 0.485 ± 0.247 | 9.55 ± 2.89 | 7.01 ± 0.960 | 1.56 |
| SAGM | 381.7 ± 40.23 | 0.586 ± 0.048 | 9.97 ± 2.77 | 2.52 ± 0.0721 | 2.39 |
| Mild steel welding fumes (MS-WF) | |||||
| DI H2O | 2197 ± 118.4 | 0.561 ± 0.325 | 8.52 ± 1.24 | 0.028 ± 0.000093 | — |
| RPMI/10% HS | 1878.3 ± 395.89 | 0.236 ± 0.080 | 10.5 ± 0.757 | 11.9 ± 0.289 | 1.48 |
| RPMI/10% FBS | 1502 ± 96.26 | 0.236 ± 0.080 | 12.1 ± 2.66 | 11.5 ± 1.10 | 1.56 |
| SAGM | 1526.7 ± 259.63 | 0.198 ± 0.041 | 18.8 ± 0.9 | 10.5 ± 0.462 | 1.37 |
| SiO2 | |||||
| DI H2O | 142.5 ± 2.364 | 0.207 ± 0.013 | 33.6 ± 1.70 | 0.008 ± 0.000044 | — |
| RPMI/10% HS | 173.4 ± 13.36 | 0.541 ± 0.027 | 11.4 ± 3.60 | 11.2 ± 0.874 | 1.3 |
| RPMI/10% FBS | 114.6 ± 0.100 | 0.324 ± 0.009 | 9.33 ± 0.841 | 11.6 ± 0.833 | 1.2 |
| SAGM | 207.7 ± 6.029 | 0.583 ± 0.078 | 12.7 ± 1.39 | 11.1 ± 0.436 | 1.12 |
| Abbreviations: —, data not available; dH,hydrodynamic diameter; DI H2O, deionized water; FBS, fetal bovine serum; HS, horse serum; PdI, polydispersity index; ρagg, effective density; RPMI, Roswell Park Memorial Institute medium; SAGM, small airway epithelial cell growth medium; σ, specific conductance; ζ, zeta potential. Values represent the mean (± SD) of a triplicate reading. | |||||