VOL. 703, NOS. 1+2 JOURNAL OF CHROMATOGRAPHY A 26 MAY 1995 CONTENTS (Abstracts /C ontents Lists published in Analytical Abstracts, Biochemical Abstracts, Biological Abstracts, Chemical Abstracts, Chemi- cal Titles, Chromatography Abstracts, Current Awareness in Biological Sciences (CABS), Current Contents/Life Sciences, Current Contents/ Physical, Chemical & Earth Sciences, Deep-Sea Research/ Part B: Oceanographic Literature Review, Excerpta Medica, Index Medicus, Mass Spectrometry Bulletin, PASCAL-CNRS, Referativnyi Zhurnal, Research Alert and Science Citation Index) MULTIDIMENSIONALITY: HYPHENATION AND COUPLED-COLUMN TECHNIQUES Preface by U.A.Th. Brinkman and H. Poppe (Amsterdam, Netherlands) THEORY AND PRINCIPLES Sample dimensionality: a predictor of order—disorder in component peak distribution in multidimensional separation by J.C. Giddings (Salt Lake City, UT, USA) Principles and applications of unified chromatography (Review) by D. Tong, K.D. Bartle and A.A. Clifford (Leeds, UK) LC-BASED SYSTEMS Liquid chromatography—mass spectrometry. General principles and instrumentation (Review) by W.M.A. Niessen (Leiden, Netherlands) and A.P. Tinke (Zuidlaren, Netherlands) Biomedical and biochemical applications of liquid chromatography—mass spectrometry (Review) by E. Gelpi (Barcelona, Spain) Column liquid chromatography—mass spectrometry: selected techniques in environmental applications for polar pesticides and related compounds (Review) by J. Slobodnik, B.L.M. van Baar and U.A.Th. Brinkman (Amsterdam, Netherlands) On-line use of NMR detection in separation chemistry (Review) by K. Albert (Tiibingen, Germany) Coupled-column reversed-phase liquid chromatography in environmental analysis (Review) by E.A. Hogendoorn and P. van Zoonen (Bilthoven, Netherlands) Selected procedures for the monitoring of polar pesticides and related microcontaminants in aquatic samples (Review) by E.R. Brouwer, S. Kofman and U.A.Th. Brinkman (Amsterdam, Netherlands) Biospecific detection in liquid chromatography (Review) by J. Emnéus and G. Marko-Varga (Lund, Sweden) Determination of the compositional heterogeneity of polydisperse polymer samples by the coupling of size-exclusion chromatography and thermal field-flow fractionation by A.C. van Asten, R.J. van Dam, W.Th. Kok, R. Tijssen and H. Poppe (Amsterdam, Netherlands) LC-GC Development of the transfer techniques for on-line high-performance liquid chromatography-capillary gas chromatography (Review) by K. Grob (Zurich, Switzerland) Trace level analysis of micropollutants in aqueous samples using gas chromatography with on-line sample enrichment and large volume injection (Review) by H.G.J. Mol, H.-G.M. Janssen and C.A. Cramers (Eindhoven, Netherlands) and J.J. Vreuls and U.A.Th. Brinkman (Amsterdam, Netherlands) Vill CONTENTS GC-BASED SYSTEMS Two-dimensional gas chromatography: principles, instrumentation, methods (Review) by G. Schomburg (Miilheim-Ruhr, Germany) Comprehensive multi-dimensional gas chromatography (Review) by J.B. Phillips and J. Xu (Carbondale, IL, USA) Multispectral detection for gas chromatography (Review) by N. Ragunathan, K.A. Krock, C. Klawun, T.A. Sasaki and C.L. Wilkins (Riverside, CA, USA) Comparison of direct deposition and flow-cell gas chromatography—Fourier transform infrared spectrometry of barbiturates by K.L. Norton and P.R. Griffiths (Moscow, ID, USA) Element-specific chromatographic detection by atomic absorption, plasma atomic emission and plasma mass spectrometry (Review) by P.C. Uden (Amherst, MA, USA) Critical review of the analysis of non- and mono-ortho-chlorobiphenyls (Review) by P. Hess (Aberdeen, UK), J. de Boer (IJmuiden, Netherlands), W.P. Cofino and P.E.G. Leonards (Amsterdam, Netherlands) and D.E. Wells (Aberdeen, UK) SFE- OR SFC-BASED SYSTEMS Selected applications of the use of supercritical fluids in coupled systems by P. Sandra (Ghent, Belgium and Eindhoven, Netherlands), A. Kot and A. Medvedovici (Ghent, Belgium) and F. David (Kortrijk, Belgium) Recent developments in supercritical fluid chromatography—mass spectrometry coupling (Review) by P.J. Arpino (Paris, France) and P. Haas (Gif-sur-Yvette, France) Packed column supercritical fluid chromatography—mass spectrometry with particle beam interface aided with particle forming solvent by P.T. Jedrzejewski and L.T. Taylor (BlacksburgV,A , USA) Performance characteristics of a real-time direct deposition supercritical fluid chromatography—Fourier transform infrared spectrophotometry system by K.L. Norton and P.R. Griffiths (Moscow, ID, USA) Applications of supercritical fluid extraction in multidimensional systems (Review) by T. Greibrokk (Oslo, Norway) Supercritical fluid extraction coupled directly with Fourier transform infrared spectrometry (Review) by L.T. Taylor and S.L. Jordan (BlacksburgV,A , USA) Supercritical fluid extraction in environmental analysis (Review) by S. Bgwadt and §.B. Hawthorne (Grand Forks, ND, USA) PLANAR CHROMATOGRAPHY-BASED SYSTEMS Multidimensionality in planar chromatography (Review) by C.F. Poole and S.K. Poole (Detroit, MI, USA) Planar chromatography coupled with spectroscopic techniques (Review) by G.W. Somsen (Amsterdam, Netherlands), W. Morden (Runcorn, UK) and I.D. Wilson (Macclesfield, UK) CAPILLARY ELECTROPHORESIS-BASED SYSTEMS Capillary electrophoresis—mass spectrometry (Review) by J. Cai and J. Henion (Ithaca, NY, USA) AUTHOR INDEX