Main Title |
Methodology and instrumentation to measure gaseous ammonia / |
Author |
David, D. J. ;
Willson, M. C. ;
Ruffin., D. S.
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Other Authors |
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CORP Author |
Monsanto Research Corp., Dayton, Ohio. Dayton Lab.;Environmental Sciences Research Lab., Research Triangle Park, N.C. |
Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory, |
Year Published |
1977 |
Report Number |
EPA/600/2-77/125 |
Stock Number |
PB-273 018 |
OCLC Number |
42711841 |
Subjects |
Ammonia ;
Air--Pollution--Measurement--Equipment and supplies ;
Air--Pollution--Measurement--Equipment and supplies ;
Ammonia
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Additional Subjects |
Gas detectors ;
Ammonia ;
Atmospheric composition ;
Gas analysis ;
Sulfur oxides ;
Optical properties ;
Concentration(Composition) ;
Chemical analysis ;
Quartz ;
Sampling ;
Air pollution ;
Chemical reactions ;
Coatings ;
Field tests ;
Performance evaluation ;
Atmospheric chemistry ;
Air pollution detection ;
Air pollution sampling
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Internet Access |
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Local Library Info |
Library |
Local Subject |
Local Note |
EKB |
|
EKB copy is an NTIS reproduction. |
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Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 600-2-77-125 |
c.1 |
Headquarters Library/Washington,DC |
03/10/2014 |
EKBD |
EPA-600/2-77-125 |
|
Research Triangle Park Library/RTP, NC |
06/20/2003 |
ELBD ARCHIVE |
EPA 600-2-77-125 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ESAD |
EPA 600-2-77-125 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB-273 018 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
xi, 105 p. : ill. ; 28 cm. |
Abstract |
Methodology for the time integrated collection and analysis of atmospheric ammonia was developed. Ammonia is primarily measured because it can react with SOx to produce ammonium sulfate. Since SOx is one of the principle air pollutants, it is important to determine its atmospheric reactions. The methodology makes use of optical wave guides which are 1 x 20 mm quartz rods coated with a chemical that is specific for NH3. As ammonia reacts with the chemical on the rod, the optical properties of light passing through the rod change and can be directly related to the NH3 concentration. An optical wave guide analyzer was developed to measure the resulting change in optical properties. Concentrations as low as 1 ppb can be assayed. The coated quartz rods are placed in the field for 24 hours and brought back to the laboratory for analysis by the analyzer. |
Notes |
"EPA 600/2-77/125." EPA contract no. 68-02-1793; EPA project officer: James Mulik. References: pp. 100-104. |