Record Display for the EPA National Library Catalog

RECORD NUMBER: 28 OF 108

OLS Field Name OLS Field Data
Main Title Development of technical specifications for standard gas-diluent mixtures for use in measurement of mobile source emissions /
Author Reckner., Louis R.
Other Authors
Author Title of a Work
Reckner, Louis R.
Margeson, John H.
CORP Author Scott Research Labs., Inc., Plumsteadville, Pa.;National Environmental Research Center, Research Triangle Park, N.C. Quality Assurance and Environmental Monitoring Lab.
Publisher U.S. Environmental Protection Agency, Office of Research and Development,
Year Published 1974
Report Number EPA-650/4-74-020; EPA-68-02-0652; EPA-ROAP-26ADZ
Stock Number PB245050
OCLC Number 55704628
Subjects Automobiles--Motors--Exhaust gas. ; Propane. ; Nitrogen. ; Carbon monoxide.
Additional Subjects Gas cylinders ; Standards ; Carbon monoxide ; Nitrogen ; Propane ; Storage ; Stability ; Valves ; Steels ; Pressure ; Tests ; Diluents ; Air pollution ; Air pollution sampling
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101JR1K.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJAD  EPA 650/4-74-020 Region 3 Library/Philadelphia, PA 07/02/2004
EJBD ARCHIVE EPA 650-4-74-020 Headquarters Library/Washington,DC 05/20/2013
EJBD  EPA 650-4-74-020 Headquarters Library/Washington,DC 10/02/2014
NTIS  PB-245 050 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation [68] p. : ill. ; 28 cm.
Abstract
The stability of gas mixtures of carbon monoxide in nitrogen and propane in air in high-pressure cylinders was investigated in 240 test cylinders over a six month period. The effect of several variables related to the preparation of the mixtures by the suppliers, the storage of the cylinders and their use by laboratories engaged in emission measurements was studied. The variables included: (1) Cylinder wall material; (2) Cylinder valve type; (3) Cylinder preconditioning procedure; (4) Concentration of carbon monoxide and propane; (5) Purity of diluent nitrogen and air; (6) Mixing procedure after blending; (7) Temperature at which cylinders are stored; (8) Cylinder pressure; (9) Type of pressure-reducing regulator used. The concentration data obtained by periodic analysis of the 240 cylinders over the six month period were subjected to statistical analysis by multiple stepwise regression. The effects of the individual variables are discussed, and recommended practices for assuring stable mixtures of carbon monoxide in nitrogen and propane in air are presented.
Notes
EPA Project Officer: John H. Margeson. Prepared for the U.S. Environmental Protection Agency "June 1974." "EPA-650/4-74-020." Quality Assurance and Environmental Monitoring Laboratory, National Environmental Research Center. Also distributed by National Technical Information Service (NTIS) as PB245050.