Confirmation Studies on Polychlorinated Biphenyls (PCB) From River Waters Using Mass Fragmentography

A specific and sensitive method to confirm the presence of polychlorinated biphenyls (PCB) in river water is described. Mass fragmentography is shown to be a proper technique especially when utilizing naturally occurring stable isotopes of chlorine. Synthesized tetrachloro-, pentachloro-and hexachlo-ro biphenyls were used to focus the mass spectrometer at three selected masses so called multiple ion detection (MID).