| Main Title |
Development and Validation of a Source Test Method for 2,4-Toluene Diisocyanate. |
| Author |
Foster, S. C. ;
McGaughey, J. F. ;
Wilshire, F. W. ;
Knoll, J. E. ;
|
| CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. ;Radian Corp., Research Triangle Park, NC. |
| Publisher |
1993 |
| Year Published |
1993 |
| Report Number |
EPA/600/A-93/124; |
| Stock Number |
PB93-204055 |
| Additional Subjects |
Isocyanates ;
Air pollution detection ;
Reagents ;
Chromatographic analysis ;
Pollution sources ;
Insecticides ;
Tests ;
Diisocyanate/toluene ;
Spike amount ;
Spike recovery
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB93-204055 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
12p |
| Abstract |
Four isocyanates are listed for regulation in the Clean Air Act Amendments of 1990: hexamethylene-1,6 diisocyanate, methylene diphenyl diisocyanate, and 2,4-toluene diisocyanate, each of which is used in the production of polymers, and methyl isocyanate which is an intermediate in the manufacture of the insecticide carbaryl. To support projected regulations, a study is under way to produce a source sampling and analysis method for the four pollutants cited above. In the procedure under development, the isocyanates are collected in an absorbing solution and derivatized with 1-(2-pyridyl)piperazine and analyzed by HPLC with UV detection. A system was developed in the laboratory to generate isocyanate atmospheres for optimization of sampling parameters and chromatographic conditions. The accuracy and precision of the method is determined in the field using train spiking and multiprobe sampling following the procedures outlined in EPA Method 301. |
| Supplementary Notes |
Prepared in cooperation with Radian Corp., Research Triangle Park, NC. |
| Category Codes |
68A; 99A |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/09 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
321824790 |
| Origin |
NTIS |
| Type |
CAT |
