Research Note Interferences due to Ozone-Scavenging Reagents in the GC-ECD Determination of Aldehydes and Ketones as the (2, 3, 4, 5, 6, -Pentafluorobenzyl) oximes |
| |
| Authors: | Edward T Urbansky Matthew L Magnuson Michael S Elovitz David Freeman Jasmine Shauntee |
| |
| Affiliation: | United States Environmental Protection Agency (EPA), Office of Research and Development, National Risk Management Research Laboratory , Water Supply and Water Resources Division, Treatment Technology Evaluation Branch , Cincinnati, Ohio, 45268, USA |
| |
| Abstract: | In order to study ozonation byproduct (OBP) formation as a function of time, it is necessary to quench ozone and thereby fix the concentrations of the byproducts. Reagents chosen for this purpose must not react with the OBPs or otherwise adversely impact the analysis. Six potential ozone-scavenging reagents were tested for possible interference in the GC-ECD determination of aldehydes and ketones after derivatization with O-(2,3,4,5,6-pentafluorobenzyl)oxylamine (PFBOA). All six—sodium nitrite, sodium cyanide, sodium methanoate (formate), indigo-5,5′-disulfonate disodium (Indigo Carmine), indigo-5,5′,7-trisulfonate tripotassium, and tin(II) chloride—were found to interfere in the analysis. |
| |
| Keywords: | Ozone Pentafluorobenzyloxylamine Pentafluorophenylmethyloxylamine Pentafluoro-benzylhydroxylamine Pentafluorobenzyloxime Disinfection Byproducts Analysis Ozonation Byproducts Analysis Ozone Scavenger Nitrite Cyanide Formate Indigo Carmine Indigodisulfonate Indigotrisulfonate Aldehyde Ketone |
|
|
