| Main Title |
Tetrachlorodibenzodioxin Isomer Differentiation by Micro Diffuse Reflectance Fourier Transform Infrared Spectrometry at the Low Nanogram Level. |
| Author |
Gurka, D. F. ;
Billets, S. ;
Brasch, J. W. ;
Riggle, C. J. ;
|
| CORP Author |
Environmental Monitoring Systems Lab., Las Vegas, NV.;Battelle Columbus Labs., OH. |
| Year Published |
1985 |
| Report Number |
EPA/600/J-85/380; |
| Stock Number |
PB86-187150 |
| Additional Subjects |
Infrared spectroscopy ;
Identifying ;
Sensitivity ;
Reflectance ;
Environments ;
Reprints ;
Dibenzodioxin/tetrachloro ;
Dioxins(Herbicides) ;
Fourier transform spectroscopy ;
Isomers
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB86-187150 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
7p |
| Abstract |
Infrared diffuse reflectance spectra were recorded for the 22 tetrachlorodibenzodioxin isomers (TCDDs). By use of micro-DRIFT techniques and signal averaging, identifiable spectra for each of the isomers were achieved at low nanogram levels. Spectral features in the 1200/cm to 1600/cm region indicate that each isomer has a unique spectrum and is readily distinguishable from other isomeric TCDDs. Each TCDD isomer was correctly identified, from a user-created library of the 22 isomers, using a software algorithm. The uniqueness of the TCDD FT-IR spectra offers the previously unobtainable possibility of correct isomer identification, in the presence of isomeric chromatographic coelution interferences, by spectral subtraction. These DRIFT spectra were utilized to clarify ambiguous TCDD structural assignments. Utilization of these FT-IR techniques for environmental monitoring can complement the current procedure of gas chromatography/mass spectrometry (GC/MS) for dioxin characterization. (Copyright (c) 1985 American Chemical Society.) |
| Supplementary Notes |
Pub. in Analytical Chemistry, v57 n9 p1975-1979 Aug 85. Sponsored by Battelle Columbus Labs., OH. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Tetrachlorodibenzodioxin Isomer Differentiation by Micro Diffuse Reflectance Fourier Transform Infrared Spectrometry at the Low Nanogram Level. |
| PUB Date Free Form |
c1985 |
| Category Codes |
7C; 99A; 68E |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/07 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
617120104 |
| Origin |
NTIS |
| Type |
CAT |
