| Main Title |
Determination of nitrosamines in industrial and municipal wastewaters {Microfiche} |
| Author |
Rhoades, John W. ;
Thomas, Richard E. ;
Johnson, Donald E.
|
| Other Authors |
|
| CORP Author |
Southwest Research Inst., San Antonio, TX.;Environmental Monitoring and Support Lab., Cincinnati, OH. |
| Publisher |
U.S. Environmental Protection Agency, Environmental Monitoring and Support Laboratory : Center for Environmental Research Information {distributor}, |
| Year Published |
1982 |
| Report Number |
EPA-68-03-2606; EPA-600/4-82-016 |
| Stock Number |
PB82-199621 |
| Subjects |
Nitrosamides--Measurement ;
Water--Pollution--Measurement ;
Sewage--Analysis ;
Gas chromatography
|
| Additional Subjects |
Water pollution ;
Water analysis ;
Amines ;
Nitroso compounds ;
Sewage ;
Industrial wastes ;
Chemical analysis ;
Sampling ;
Extraction ;
Gas chromatography ;
Separation ;
Water pollution detection
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB82-199621 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
98 p. ; 28 cm. |
| Abstract |
The procedural steps of sample preservation, extraction, cleanup of extracts, and gas chromatographic separation and detection in the analysis of three N-nitrosamines were studied. Two gas chromatographic columns and three detector systems, alkali flame ionization, thermal energy analyzer, and Hall electrolytic conductivity, were evaluated. Extractions were performed with dichloromethane from NaCl saturated and nonsalted samples at three pH's to determine extraction efficiencies. The effects of storage for seven days in the presence of residual chlorine and at two temperatures were determined. Florisil and alumina were compared as adsorbents for the cleanup of extracts. Recoveries of the substances for clean water and wastewater were measured, and assessments of accuracy and precision were made. The method is satisfactory for use with AFID for the analysis of clean water and wastewater having a relatively low background of interferences. With TEA and Hall detection, samples can be analyzed for nitrosodimethylamine and nitrosodipropylamine with the sample cleanup. Nitrosodiphenylamine must be separated from diphenylamine prior to determination by AFID. |
| Notes |
Caption title. "Mar 1982." "EPA-600/4-82-016." Microfiche. |
