| Main Title |
Development of a prototype nitrate detector / |
| Author |
McCoy, J. ;
Forney, L. ;
Zakak, A. ;
Ehrenfeld, J. ;
Driscoll., J. ;
|
| Other Authors |
|
| 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 |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| 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 |
| ELBD ARCHIVE |
EPA 650-2-74-133 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| 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. |
| Abstract |
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. |
| Notes |
"EPA contract no. 68-02-0591, program element no. 1A1010, ROAP no. 25AEK." "December 1974." "EPA/650-2-74-133." |
