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IDENTIFICATION OF POLAR DRINKING WATER DISINFECTION BY-PRODUCTS USING LIQUID CHROMATOGRAPHY - MASS SPECTROMETRY
Citation:
Richardson, S D., T V. Caughran, F G. Crumley, T. Poiger, AND Y. Guo. IDENTIFICATION OF POLAR DRINKING WATER DISINFECTION BY-PRODUCTS USING LIQUID CHROMATOGRAPHY - MASS SPECTROMETRY. Chapter 25, Natural Organic Matter and Disinfection By-Products Characterization and Control in Drinking Water. American Chemical Society, Washington, DC, , 374-388, (2000).
Description:
A qualitative method using 2,4-dinitrophenylhydrazine (DNPH) derivatization followed by analysis with liquid chromatography (LC)/negative ion-electrospray mass spectrometry (MS) was developed for identifying polar aldehydes and ketones in ozonated drinking water. This method offers advantages over the currently accepted method using pentafluorobenzylhydroxylarnine (PFBHA) derivatization and gas chromatography/mass spectrometry (GC/MS) analysis, in that it allows for the detection of highly polar carbonyl compounds (with multiple polar substituents) and produces mass spectra and chromatographic behavior that can be used to distinguish between aldehydes and ketones in ozonated water. Results for many polar-substituted aldehyde and ketone standards are presented, as well as the identification of polar disinfection by-products (DBPs) in ozonated drinking water from full-scale plants and laboratory-scale ozonations of hurnic acid.