Production of Polycyclic Aromatic Hydrocarbons From Underventilated Hydrocarbon Diffusion Flames.
Production of Polycyclic Aromatic Hydrocarbons From
Underventilated Hydrocarbon Diffusion Flames.
Tolocka, M. P.; Miller, J. H.
Combustion Institute/Eastern States Section. Chemical
and Physical Processes in Combustion. Proceedings.
Fall Technical Meeting, 1995. October 16-18, 1995,
Worcester, MA, 253-256 pp, 1995.
Sponsor:National Institute of Standards and Technology,
combustion; diffusion flames; polycyclic aromatic
hydrocarbons; soot; underventilated combustion
Polycyclic Aromatic Hydrocarbons (PAH) are ubiquitous
products of incomplete combustion, and have been found
adsorbed on the particulate emissions from wood fires,
pulverized coal combustion, waste incineration, and
laboratory scale flames. Because specific PAH are known
to be mutagenic, measuring the concentration levels of
these compounds is important in assessing risk from
these combustion sources. It has been recently noted
that soot generated from underventilated diffusion
flames is remarkably different in structure than soot
from overventilated combustion, and the smoke generated
from underventilated combustion has a much higher
organic composition. It is expected that the organic
component of the soot is largely PAH, molecules which
are thought to be the precursors to soot formation. We
present here initial quantiative measurements of PAH
absorbed on the surface of particles generated from
overventilated and underventilated flames.