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Eur. J. Mass Spectrom. 8, 397 - 401 (2002)
DOI: 10.1255/ejms.500

A modified thermal deposition unit for gel-permeation chromatography with matrix-assisted laser desorption/ionization and electrospray ionization time-of-flight analysis

E. Peter Maziarz* and X. Michael Liu*
Bausch & Lomb Inc., 1400 North Goodman Street, PO Box 450, Rochester, New York 14603, USA. E-mail: and

ABSTRACT:
We describe a modified commercially available thermal deposition unit that incorporates a post-column mixing cell for gel-permeation chromatography (GPC) effluent and matrix solution prior to continuous deposition onto a matrix-assisted laser desorption/ionization (MALDI) sample target. This modification overcomes the shortcomings of using a prefabricated matrix foil. This GPC MALDI method with time-of-flight (ToF) mass spectrometry is demonstrated by the analysis of a poly(dimethylsiloxane) (PDMS) sample used in the production of implantable device materials.

Keywords: automated GPC-MALDI MS, polymer characterization, thermal co-deposition, automation, post-column mixing

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