Main Title |
Evaluation of the Fourier Transform Infrared Spectrometer for Particle-Associated Ammonium Sulfate Determination. |
Author |
Krost., K. J. ;
|
CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. |
Publisher |
Mar 92 |
Year Published |
1992 |
Report Number |
EPA/600/R-92/050; |
Stock Number |
PB92-160084 |
Additional Subjects |
Ammonium sulfate ;
Sulfates ;
Particulates ;
Infrared spectroscopy ;
Air pollution monitoring ;
Fourier transformation ;
Statistical analysis ;
Chemical analysis ;
Fourier transform infrared spectroscopy
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB92-160084 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
69p |
Abstract |
A commercial Fourier transform infrared (FTIR) spectrometer, modified for automated analysis of particulate-associated sulfate, was used to obtain transmission spectra of samples of particulate matter collected from the ambient air onto Teflon filters. An evaluation of the instrumentation was undertaken to determine its applicability for measuring sulfate and the correlation of results with those of ion chromatography and x-ray fluorescence. Particle samples from six geographical areas were analyzed in the study. Results from different filter sets, using individual filter blanks, show values of the coefficient of determination of 0.90 or higher for any two techniques with one notable exception. The exception is due to displacement of sulfate absorption from the wavelength interval used for analysis, and apparently indicates the effect of co-collected compounds in chemically shifting the spectra. The detection limit is 1.2 microgram/sq cm which corresponds to 0.4 microgram/cu m sampled over 24 hours at 13.3 L/min for ammonium sulfate. |
Supplementary Notes |
See also PB86-157807 and PB88-213236. |
NTIS Title Notes |
Final rept. |
Category Codes |
68A; 99A |
NTIS Prices |
PC A04/MF A01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
212827672 |
Origin |
NTIS |
Type |
CAT |