Two pyrene derivatives of widespread environmental distribution: cyclopenta(cd)pyrene and acepyrene. [Carcinogenesis; soots; coal tar pitch]
An orange polycyclic aromatic hydrocarbon with reported tumorigenic properties, isolated from carbon black and other soots by several previous investigators, was identified as cyclopenta(cd)pyrene. This compound is the first known cycloalkenyl pyrene derivative. It was characterized by elemental analysis, proton magnetic resonance, mass spectroscopy and uv-vis spectroscopy. A benzene extract of the carbon black used for its isolation contained 60-fold more cyclopenta(cd)pyrene than benzo(a)pyrene. Hydrogenation of cyclopenta(cd)pyrene yielded acepyrene (3,4-dihydrocyclopenta(cd)pyrene). The latter hydrocarbon is present in relatively abundant concentrations in coal tar pitch. The mass spectrum, proton magnetic resonance spectrum, and quantitative uv spectrum of acepyrene are reported.
- Research Organization:
- Univ. of Nebraska Medical Center, Omaha
- OSTI ID:
- 7196866
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 9:2; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
59 BASIC BIOLOGICAL SCIENCES
AROMATICS
BENZOPYRENE
CARBON
CARBON BLACK
CARCINOGENESIS
CHEMICAL REACTIONS
COAL TAR
CONDENSED AROMATICS
ELEMENTS
EXTRACTION
HYDROCARBONS
HYDROGENATION
MASS SPECTROSCOPY
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PATHOGENESIS
PROTON SPECTRA
PYRENE
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTRA
SPECTROSCOPY
TAR
ULTRAVIOLET SPECTRA