Abstract

Pure surfactants have been analyzed by newer mass spectrometric techniques, i.e. by field desorption (FD), desorption chemical ionization (DCI) and fast atom bombardment (FAB). FD leads to spectra which are dominated by the quasimolecular ions while fragments are missing. On the contrary, both the DCI and the FAB method lead to spectra which contain both quasimolecular ions and structure specific fragments. Using the FD technique in combination with collisionally activated decomposition (CAD) in a tandem mass spectrometer cationic, nonionic and anionic surfactants have been identified in river water without prior separation. Moreover, cationic surfactants have been quantified in sewage water and surface water.

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