| Main Title |
Collaborative Testing of a Manual Sodium Arsenite Method for Measurement of Nitrogen Dioxide in Ambient Air. |
| Author |
Margeson, John H. ;
Suggs, Jack C. ;
Constant, Jr., Paul C. ;
Sharp, Michael C. ;
Scheil, George W. ;
|
| CORP Author |
Environmental Monitoring and Support Lab., Research Triangle Park, NC. Quality Assurance Branch. ;Midwest Research Inst., Kansas City, MO. |
| Year Published |
1977 |
| Report Number |
EPA/600/J-78/098; |
| Stock Number |
PB-294 921 |
| Additional Subjects |
Air pollution ;
Nitrogen dioxide ;
Gas analysis ;
Chemical analysis ;
Sampling ;
Laboratory equipment ;
Concentration(Composition) ;
Sites ;
Performance evaluation ;
Sodium arsenite method ;
Air pollution detection ;
Procedures ;
Reprints
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-294 921 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
6p |
| Abstract |
The sodium arsenite method for 24-h integrated measurement of NO2 in ambient air was subjected to a collaborative test. Ten collaborators sampled ambient air and simultaneously the same ambient air spiked with a reliable source of NO2 for 4 days at a common site in Kansas City, MO. NO2 concentrations of 50-370 micrograms/cu m were sampled. Within and between laboratory standard deviations were 8 and 11 micrograms/cu m, respectively, over the range 84-312 micrograms NO2/cu m. The method had a bias of -3% of the concentration over the above range. The lower detectable limit (LDL) of the method was 8 micrograms/cu m. The test results indicated that the method will produce accurate, precise measurements of ambient NO2 concentrations. |
