Record Display for the EPA National Library Catalog


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
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB93-204055 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 12p
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.