Rydberg electron-capture mass spectrometry of 1,2,3,4 tetrachlorodibenzo-

p-dioxin

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Eur. J. Mass Spectrom. 6, 405 - 408 (2000)

Rydberg electron-capture mass spectrometry of 1,2,3,4 tetrachlorodibenzo-p-dioxin

M. Carette, Y. Zerega,^* P. Perrier and J. Andre
Institut Universitaire des Systèmes Thermiques Industriels, Université de Provence, CNRS (UMR 6595), Technopôle de Château-Gombert, 5 rue E. Fermi, F-13453 Marseille Cedex 20, France. E-mail:
R.E. March
Department of Chemistry, Trent University, Peterborough, ON, Canada K9J 7B8

ABSTRACT:

A negative ion creation technique by Rydberg electron capture (REC) is used to ionise 1,2,3,4 tetrachlorodibenzo-p-dioxin (1,2,3,4-TCDD). Negative ions are mass-analysed by a commercial quadrupole mass spectrometer and also by a home-made mass spectrometer using a quadrupole ion trap. From spectra of 1,2,3,4-TCDD a comparison between the REC ionisation technique and two other soft ionisation techniques, electron capture chemical ionisation (ECCI) and the electron monochromator (EM), are discussed.

Keywords: Rydberg electron capture, negative ion source, dioxin, mass spectrometry

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