| Main Title |
Methods for the Rapid and Accurate Measurement of Nitrate and Sulfate in Atmospheric Particulates. |
| Author |
William, D. ;
Driscol, J. ;
Curti, C. ;
Heber, R. ;
|
| CORP Author |
Abcor, Inc., Cambridge, Mass. Walden Research Div. |
| Year Published |
1973 |
| Report Number |
EPA-68-02-0564; 650-2-73-050; |
| Stock Number |
PB-230 887 |
| Additional Subjects |
Sulfates ;
Inorganic nitrates ;
Aerosols ;
Potentiometric analysis ;
Leaching ;
Particles ;
Performance evaluation ;
Chemical composition ;
Air pollution ;
Precision ;
Sensitivity ;
Ion selective electrodes
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-230 887 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
105p |
| Abstract |
The objectives of this study were to develop rapid and accurate analytical methods for the determination of nitrate and sulfate in atmospheric particulate samples, and to compare the new methods developed with current spectrophotometric methods for nitrate and sulfate. An Orion nitrate electrode is used to measure nitrate leached from High Volume filter samples. A sulfate procedure was developed using a lead precipitation technique and measuring the excess lead ion with an Orion lead electrode. Increased sensitivity was obtained by adding an equal volume of methyl cellosolve acetate (MCA) to the High Volume filter extracts. Studies on leaching the sulfate or nitrate from the High Volume filter samples were performed. The techniques and results are reported. The recommended procedures for nitrate and sulfate analysis are appended to this report. |
