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Differential pressure as a measure of particulate matter emissions from diesel engines.

Authors
Mischler-SE; Volkwein-JC
Source
Environ Sci Technol 2005 Apr; 39(7):2255-2261
NIOSHTIC No.
20026787
Abstract
A diesel particulate matter analyzer capable of direct, real-time measurement of engine exhaust particulate is necessary to effectively institute source control technology currently being used on diesel equipment and to ensure that the control measures are working. To investigate the potential of a differential pressure monitor to measure diesel particulate matter in undiluted exhaust, samples were collected from three different diesel engines--Kubota, Isuzu, and Deutz--running under 12 different RPM and load scenarios. These measurements were compared to elemental carbon concentrations in the sampled exhaust as determined by using the NIOSH 5040 analytical method. Elemental carbon is used as a surrogate measurement for diesel particulate matter. The results of the two data sets were then compared using a linear regression analysis. The coefficient of determination was calculated to be 0.98, 0.94, and 0.74 for the Kubota, Deutz, and Isuzu engines, respectively. Values of this magnitude indicate that this method can be successful in estimating elemental carbon emissions in the engines tested. In addition, for replicate samples, the coefficient of variation ranged from 7.1% to 10.2% with an average of 8.5%. These data indicate that this method could prove useful to mechanics as they work to maintain engines and DPM control technologies.
Keywords
Particulates; Diesel-engines; Diesel-emissions; Diesel-exhausts; Sampling; Sampling-methods; Analytical-methods; Control-technology; Aerosols; Aerosol-particles; Mining-industry; Underground-mining; Metal-mining; Nonmetal-mining; Occupational-health; Health-hazards
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
CODEN
ESTHAG
Publication Date
20050401
Document Type
Journal Article
Email Address
SMischler@cdc.gov
Fiscal Year
2005
NTIS Accession No.
NTIS Price
Issue of Publication
7
ISSN
0013-936X
NIOSH Division
PRL
Priority Area
Research Tools and Approaches: Exposure Assessment Methods
Source Name
Environmental Science and Technology
State
PA
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