Main Title |
An evaluation of TGS-ANSA procedure for determination of nitrogen dioxide in ambient air / |
Author |
Fuerst, Robert G. ;
Margeson., John H.
|
Other Authors |
|
CORP Author |
National Environmental Research Center, Research Triangle Park, N.C. Quality Assurance and Environmental Monitoring Lab. |
Publisher |
National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency, |
Year Published |
1974 |
Report Number |
PB238097; EPA-650/4-74-047 |
Stock Number |
PB238097 |
OCLC Number |
55691817 |
Subjects |
Nitrogen dioxide--Environmental aspects--United States
|
Additional Subjects |
Nitrogen dioxide ;
Gas analysis ;
Experimental design ;
Accuracy ;
Performance evaluation ;
Precision ;
Gas sampling ;
Air pollution detection ;
Air pollution sampling ;
Ethanol/nitrilo-tri ;
Sodium bisulfite ;
Phenol/methoxy
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 650-4-74-047 |
|
Headquarters Library/Washington,DC |
06/09/2015 |
EKBD |
EPA-650/4-74-047 |
|
Research Triangle Park Library/RTP, NC |
08/29/2017 |
ELBD ARCHIVE |
EPA 650-4-74-047 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
NTIS |
PB-238 097 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
v, 48 pages : illustrations ; 28 cm. |
Abstract |
A detailed method write-up describing the TGS-ANSA manual procedure for measurement of NO2 in ambient air was developed. The method involves sampling for 24 hours with a restricted-orifice bubbler immersed in a triethanolamine, o-methoxyphenol, sodium metabisulfite solution. The range of the method is approximately 20 to 700 microg/cum. The method was evaluated to determine its usefulness. This involved a review of the procedure, as developed, to judge the adequacy of the development work and ruggedness testing, as described by Youden. The method was shown to be free from interferences such as: NO, SO2, O3, CO, and NH3 and possesses a constant-high collection efficiency, 93%. The time interval between the addition of the diazonium salt forming reagent and the diazonium salt coupling reagent is critical and must be carefully controlled. |
Notes |
Prepared for the U.S. Environmental Protection Agency "EPA-650/4-74-047." "November 1974." Also distributed by National Technical Information Service (NTIS) as PB238097. |