INVESTIGATION OF SELECTED POTENTIAL ENVIRONMENTAL CONTAMINANTS: ASPHALT AND COAL TAR PITCH
This report reviews the literature on the potential environmental hazards and health impacts from production, distribution, and use of asphalt, the essentially uncracked residue from crude oil, and coal tar pitch, the highly cracked residue from fractional distillation of coal tar derived from the coking of coal. Topics include physical and chemical properties; production figures; uses; process descriptions; contamination potential; methods of sampling, monitoring, and analysis; acute and chronic effects on human health; toxicity to animals and plants; suggested handling practices; regulations and standards. Of the 31 million tons of asphalt sold annually in the US, most is used in exposed surfaces: paving (78%), roofing (17%), dam linings and soil stabilizers, etc., (.5%). In contrast, 62% of the 1.2 million tons of pitch produced annually in the US is used in baked carbon and graphite products, 17% as fuel, and only 7% in exposed surfaces. Asphalt and pitch and their emissions and degradation products may contain varying quantities of trace metals and polycyclic aromatic hydrocarbons (PAH), some of which may have toxic effects including photoxicity and cancer of skin and lungs. Potential environmental contamination and health hazards of asphalt and pitch are considered, with recommendations for further research.
University of CincinnatiDepartment of Environmental Health
Cincinnati, OH USA 45221
Environmental Protection AgencyOffice of Toxic Substances
Washington, DC USA 20460
- Trosset, R P
- Warshawsky, D
- Menefee, C L
- Bingham, E
- Publication Date: 1978-9
- Pagination: 241 p.
- TRT Terms: Animals; Aromatic hydrocarbons; Asphalt; Chemical properties; Coal tars; Coking; Contaminants; Crude oil; Design; Environment; Environmental impacts; Environmental protection; Hazards; Health; Hydrocarbons; Industrial hygiene; Marketing; Metals; Physical properties; Pitch (Materials); Plants; Public health; Regulations; Reviews; Sampling; Surveys; Toxicity; Trace elements; Utilization
- Uncontrolled Terms: Design criteria; Sources
- Old TRIS Terms: Aromatic polycyclic hydrocarbons; Environmental surveys
- Subject Areas: Design; Environment; Highways; Law; Materials; Research;
- Accession Number: 00191265
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: EPA/560/2-77/005 Final Rpt.
- Contract Numbers: EPA-68-01-4188
- Files: TRIS
- Created Date: May 11 1979 12:00AM