Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Physicochemical and toxicological properties of commercial carbon blacks modified by reaction with ozone.

Authors
Peebles-BC; Dutta-PK; Waldman-WJ; Villamena-FA; Nash-K; Severance-M; Nagy-A
Source
Environ Sci Technol 2011 Dec; 45(24):10668-10675
NIOSHTIC No.
20040639
Abstract
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.
Keywords
Airborne-dusts; Airborne-particles; Air-contamination; Pollutants; Toxins; Models; Chemical-composition; Cytotoxic-effects; Cytotoxicity
Contact
Prabir K. Dutta, Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210
CODEN
ESTHAG
CAS No.
98615-67-9; 1333-86-4
Publication Date
20111215
Document Type
Journal Article
Email Address
dutta@chemistry.ohio-state.edu.
Funding Type
Grant
Fiscal Year
2012
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-009141
Issue of Publication
24
ISSN
0013-936X
Source Name
Environmental Science and Technology
State
OH
Performing Organization
The Ohio State University
TOP