Research Article
Assessment of Pulmonary Toxicity Induced by Inhaled Toner with External Additives
Table 1
Physicochemical properties of toner.
| | Test sample | Physicochemical properties | Value |
| | Bulk toner | Color | Black | | | Component (wt%) | | | | Polyester resin | 70–80% | | | Carbon black | 1–10% | | | Wax | 1–10% | | | Copper compound | 1–10% | | | Total amount of particles less than 100 nm in external additive (wt%) | 4-5% | | | Total amount of titanium dioxide nanoparticles in external additive (wt%) | 1-2% | | | Total amount of amorphous silica nanoparticles in external additive (wt%) | 3-4% | | | BET surface area(m2/g) | 2-3 | | Toner for inhalation study | Mass median aerodynamic diameter (μm) | 2.1 | | | Geometric standard deviation | 1.6 |
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: powder used in laser printers and photocopies to form the printed text and images on the paper.
BET surface : Brunauer-Emmett-Teller surface area.
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