Physicochemical and Toxicological Properties of Commercial Carbon Blacks Modified by Reaction with Ozone
| Autor: | Frederick A. Villamena, Michael Severance, Amber Nagy, W. James Waldman, Brian Christopher Peebles, Kevin M. Nash, Prabir K. Dutta |
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| Rok vydání: | 2011 |
| Předmět: |
inorganic chemicals
Ozone Surface Properties chemistry.chemical_element Infrared spectroscopy Photochemistry Cell Line law.invention Mice chemistry.chemical_compound symbols.namesake Soot X-ray photoelectron spectroscopy law Spectroscopy Fourier Transform Infrared Animals Environmental Chemistry Organic chemistry Surface charge Electron paramagnetic resonance Cytotoxicity Air Pollutants Cytotoxins General Chemistry Models Chemical chemistry symbols sense organs Raman spectroscopy Carbon |
| Zdroj: | Environmental Science & Technology. 45:10668-10675 |
| ISSN: | 1520-5851 0013-936X |
| Popis: | Ozonation of two commercial carbon blacks (CBs), Printex 90 (P90) and Flammruss 101 (F101), was carried out and changes in their morphology, physical properties, and cytotoxicity were examined. The hypothesis examined was that different methods of manufacture of CBs influence their chemical reactivity and toxicological properties. Structural changes were examined by X-ray photoelectron spectroscopy, infrared spectroscopy, Raman spectroscopy, and electron paramagnetic resonance spectroscopy (EPR). Introduction of surface oxygen functionality upon ozonation led to changes in surface charge, aggregation characteristics, and free radical content of the CBs. However, these changes in surface functionality did not alter the cytotoxicity and release of inflammation markers upon exposure of the CBs to murine macrophages. Interaction of macrophages with F101 resulted in higher levels of inflammatory markers than P90, and the only structural correlation was with the higher persistent radical concentration on the F101. |
| Databáze: | OpenAIRE |
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