Record Display for the EPA National Library Catalog
RECORD NUMBER: 13 OF 240
|OLS Field Name||OLS Field Data|
|Main Title||Analysis of Organophosphorus Pesticide Samples by High-Performance Liquid Chromatography/Mass Spectrometry and High-Performance Liquid Chromatography/Mass Spectrometry/Mass Spectrometry.|
|Author||Betowski, L. D. ; Jones, T. L. ;|
|CORP Author||Environmental Monitoring Systems Lab., Las Vegas, NV.|
|Additional Subjects||Chemical analysis ; Pesticides ; Mass spectroscopy ; Phosphorus organic compounds ; Performance evaluation ; Sampling ; Spectrum analysis ; Experimental design ; Ionization ; Dissociation ; Reprints ; High performance liquid chromatography ; EPA method 8140 ; Environmental monitoring ; Daughter products|
Ten analytes from the U.S. Environmental Protection Agency's SW-846, Method 8140, Organophosphorous Pesticide Parameters, were subjected to analysis by high performance liquid chromatography/mass spectrometry (HPLC/MS) and HPLC/MS/MS with thermospray ionization. The compounds chosen suffered poor recoveries under analysis by Method 8140 which is a gas chromatographic procedure. Limits of detection, precision values, and retention times were generated with HPLC/MS methods on pure analytical standards. Collision activated dissociation daughter ion spectra were also collected by tandem mass spectrometric techniques. Four environmental samples known to contain organophosphorous pesticides were analyzed by HPLC/MS, and these results were compared with similar analyses by GC/MS. Tandem mass spectrometry was used to confirm the compounds identified by HPLC/MS.