Record Display for the EPA National Library Catalog


Main Title Development of a prototype nitrate detector /
Author McCoy, J. ; Forney, L. ; Zakak, A. ; Ehrenfeld, J. ; Driscoll., J. ;
Other Authors
Author Title of a Work
McCoy, J.
CORP Author Abcor, Inc., Cambridge, Mass. Walden Research Div.;Environmental Sciences Research Lab., Research Triangle Park, N.C.
Publisher U.S. Environmental Protection Agency, Office of Research and Development,
Year Published 1974
Report Number EPA/650-2-74-133; EPA-68-02-0591
Stock Number PB-253 442
OCLC Number 39759990
Subjects Nitrates--Measurement. ; Air--Pollution--Measurement--Equipment and supplies.
Additional Subjects Samplers ; Aerosols ; Inorganic nitrates ; Chemical analysis ; Air pollution ; Performance evaluation ; Design criteria ; Field tests ; Laboratory equipment ; Particles ; Monitors ; Electrodes ; Concentration(Composition) ; Ions ; Calibrating ; Air pollution sampling
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 650-2-74-133 Headquarters Library/Washington,DC 11/04/2013
EJBD  EPA 650-2-74-133 Headquarters Library/Washington,DC 06/27/2014
EKBD  EPA-650/2-74-133 Research Triangle Park Library/RTP, NC 11/16/2016
NTIS  PB-253 442 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation v, 59 pages : illustrations ; 28 cm.
A semi-continuous prototype detector for suspended atmospheric nitrate was developed, designed, fabricated and tested. The sensing range of the resulting instrument was from less than 1 micrograms/cu m to over 100 micrograms/cu m of suspended nitrate with an analysis time of less than one hour. A series of ambient sampling tests were performed with the prototype instruments run in parallel to three high volume samplers. The results of these tests show that the instrumental measurement compares well with the high volume sampler measurements. Temporal variations in suspended nitrate concentration were monitored showing the feasibility of measuring the dynamic behavior of nitrate in the atmosphere. The prototype detector uses a LEAP sampler to collect atmospheric particulate into aqueous solution where the soluble nitrate is dissolved. The resulting solution is analyzed by an ionselective electrode technique for nitrate. Operating and calibrating functions may be controlled automatically or manually.
"EPA contract no. 68-02-0591, program element no. 1A1010, ROAP no. 25AEK." "December 1974." "EPA/650-2-74-133."