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New York City bus-terminal diesel emissions study: measurement and collection of diesel exhaust for chemical characterization and mutagenic activity

Technical Report ·
OSTI ID:6079262
; ; ;
The paper is concerned with the impact of diesel emissions on the quality of the ambient air and the resulting effects on human health. The study was designed to chemically characterize and bioassay heavy-duty diesel engine exhaust as it exists in the ambient atmosphere. Diesel-emission aerosols were collected inside and outside a large New York City bus terminal in which 1400 buses operated daily. Organics were extracted from inside and outside particulate matter and were fractionated into chemical classes. Air particle concentration inside the building was nearly 3 times greater than outside with the increase in the <1.7 micron particle size. Although both the small particle and extractable organic concentrations were lower outside the terminal, the mutagenicity of the organics (revertants/microgram organics) from outside was nearly 10 times greater than inside the terminal. Results are consistent with studies showing that aged atmospheric organics, having undergone atmospheric transformations, have an increased mutagenic response over fresh aerosol emitted directly from combustion sources.
Research Organization:
Environmental Protection Agency, Research Triangle Park, NC (USA). Environmental Monitoring and Systems Lab.
OSTI ID:
6079262
Report Number(s):
PB-87-195384/XAB; EPA-600/D-87/180
Country of Publication:
United States
Language:
English

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Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102 -- Internal Combustion Engines-- Diesel
330705 -- Emission Control-- Particulates
500200* -- Environment
Atmospheric-- Chemicals Monitoring &amp; Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
BIOASSAY
CHEMICAL ANALYSIS
DIESEL ENGINES
ENGINES
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MUTAGENS
ORGANIC COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION
TERMINAL FACILITIES
TOXICITY
WASTES