Table Of Content

VOL. 669, NOS. 1+2 JOURNAL OF CHROMATOGRAPHY A MAY 27, 1994 CONTENTS (Abstracts /Contents 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) REGULAR PAPERS Column Liquid Chromatography Separation behaviour of silica-containing mixed oxides as column packing materials for liquid chromatography by S. Kaneko, T. Mitsuzawa, S. Ohmori and M. Nakamura (Hamamatsu, Japan) and K. Nobuhara and M. Masatani (Kasugai, Japan) (Received January 18th, 1994) Development of dihydrazide-activated silica supports for high-performance affinity chromatography by P.F. Ruhn, S. Garver and D.S. Hage (Lincoln, NE, USA) (Received December 22nd, 1993) Size-exclusion chromatography and dynamic light scattering of dextrans in water: explanation of ion-exclusion behaviour by B. Porsch (Prague, Czech Republic) and L.-O. Sundelof (Uppsala, Sweden) (Received January 14th, 1994) .. 21 Factorial experimental design and principal component analysis of the interaction of animal glues with polymeric and silica-based stationary phases in size exclusion chromatography by C.J. Weatherell and E.P.C. Lai (Ottawa, Canada) (Received January Sth, 1994) Determination of polycyclic aromatic hydrocarbons in surface water by column liquid chromatography with fluorescence detection, using on-line micelle-mediated sample preparation by E.R. Brouwer, A.N.J. Hermans, H. Lingeman and U.A.Th. Brinkman (Amsterdam, Netherlands) (Received January 19th, 1994) Solid-phase extraction and high-performance liquid chromatographic determination of organic acids in honey by A. Cherchi, L. Spanedda, C. Tuberoso and P. Cabras (Cagliari, Italy) (Received January Sth, 1994) Development and validation of a high-performance liquid chromatography system for the analysis of hop bitter acids by A.C.J. Hermans-Lokkerbol and R. Verpoorte (Leiden, Netherlands) (Received February 15th, 1994) Determination of tetracycline antibiotics in animal tissues of food-producing animals by high-performance liquid chromatography using solid-phase extraction by J. Sokol (Kosice, Slovak Republic) and E. Matisova (Bratislava, Slovak Republic) (Received January 7th, 1994) Chromatomembrane method for the continuous separation of substances by L.N. Moskvin (St. Petersburg, Russian Federation) (Received December 2nd, 1993) Gas Chromatography Inverse gas chromatographic determination of solubility parameter and binary parameters of a,w-diamino oligoethers by A. Voelkel and J. Janas (Poznan, Poland) (Received January 19th, 1994) Gas chromatographic, liquid chromatographic and gas chromatographic—mass spectrometric identification of degradation products in accelerated aged microbial polyhydroxyalkanoates by S. Karlsson, C. Sares, R. Renstad and A.-C. Albertsson (Stockholm, Sweden) (Received January 20th, 1994) Characterization of technical toxaphene using combined high-performance liquid chromatography—gas chromatography— electron capture negative ionization mass spectrometry techniques by J. Zhu, M.J. Mulvihill and R.J. Norstrom (Ottawa, Canada) (Received January 20th, 1994) Matrix solid-phase dispersion extraction and gas chromatographic screening of polychlorinated biphenyls in fish by Y.-C. Ling, M.-Y. Chang and I.-P. Huang (Hsinchu, Taiwan) (Received January 27th, 1994) Simultaneous gas chromatographic analysis of non-protein and protein amino acids as N(O,S)-isobutyloxycarbony] tert.- butyldimethylsilyl derivatives by C.-H. Oh and J.-H. Kim (Seoul, South Korea), K.-R. Kim (Suwon, South Korea) and D.M. Brownson and T.J. Mabry (Austin, TX, USA) (Received January 17th, 1994) Rapid screening of rolling mill oils using high-temperature capillary gas chromatography by W.J. Havenga and E.R. Rohwer (Pretoria, South Africa) (Received January 18th, 1994) (Continued overleaf) Contents (continued) Electrophoresis Electrophoretic behaviour of a group of organic anions of biochemical interest in a functionally coherent series of buffers by R.H.P. Reid (Wrexham, UK) (Received January 31st, 1994) 151 Capillary zone electrophoresis with laser-induced fluorescence detection for analysis of methylmalonic acid and other short-chain dicarboxylic acids derivatized with 1-pyrenyldiazomethane by J. Schneede, J.H. Mortensen, G. Kvalheim and P.M. Ueland (Bergen, Norway) (Received January 25th, 1994) 185 Analytical study of biomass pyrolysis oils. II. Optimization of analytical conditions for the phenolic fraction using micellar electrokinetic chromatography by C. Rony, J.C. Jacquier and P.L. Desbéne (Evreux and Mont St. Aignan, France) (Received December 6th, 1993) 195 Use of the fluorescent intercalating dyes POPO-3, YOYO-3 and YOYO-1 for ultrasensitive detection of double-stranded DNA separated by capillary electrophoresis with hydroxypropylmethy] cellulose and non-cross-linked polyacrylamide by D. Figeys, E. Arriaga, A. Renborg and N.J. Dovichi (Edmonton, Canada) (Received February 2nd, 1994) . . Comparison of capillary electrophoresis and reversed-phase ion-pair high-performance liquid chromatography for the determination of paraquat, diquat and difenzoquat by M.C. Carneiro, L. Puignou and M.T. Galceran (Barcelona, Spain) (Received January 17th, 1994) SHORT COMMUNICATIONS Column Liquid Chromatography Determination of quaternary and tertiary alkaloids in Corydalis decumbens by reversed-phase high-performance liquid chromatography by J. Liao, W. Liang and G. Tu (Beijing, China) (Received January 25th, 1994) Reversed-phase chromatography of small molecules and peptides on a continuous rod of macroporous poly(styrene—co- divinylbenzene) by Q.C. Wang, F. Svec and J.M.J. Fréchet (Ithaca, NY, USA) (Received February 10th, 1994) Gas Chromatography Gas chromatography—mass spectrometry of flavonoid aglycones. II. Structure-retention relationships and a possibility of differentiation between isomeric 6- and 8-methoxyflavones by T.J. Schmidt, I. Merfort and G. Willuhn (Diisseldorf, Germany) (Received February 21st, 1994) 236 Supercritical Fluid Chromatography Supercritical fluid extraction and chromatography of aromatic amines by V. Janda and J. Kriz (Prague, Czech Republic), J. Vejrosta (Brno, Czech Republic) and K.D. Bartle (Leeds, UK) (Received February 10th, 1994) Planar Chromatography Determination of lipophilicity by means of reversed-phase thin-layer chromatography. II. Influence of the organic modifier on the slope of the thin-layer chromatographic equation by G.L. Biagi, A.M. Barbaro, A. Sapone and M. Recanatini (Bologna, Italy) (Received January 31st, 1994). . . Electrophoresis Adaptation of a microdrop injector to sampling in capillary electrophoresis by D. Sziele and O. Briiggemann (Hannover, Germany), M. Déring (Norderstedt, Germany) and R. Freitag and K. Schiigerl (Hannover, Germany) (Received December 17th, 1993) Enhanced micellar electrokinetic capillary chromatography separations on anionic polymer-coated capillary with pH- independent electroosmotic flow by A. Landman, P. Sun and R.A. Hartwick (Binghamton, NY, USA) (Received February 15th, 1994) Effect of acetonitrile in the sampling solution on the analyte peak shape in micellar electrokinetic capillary chromatography by H.J. Crabtree, I.D. Ireland and N.J. Dovichi (Edmonton, Canada) (Received March 1st, 1994) Separation of honey flavonoids by micellar electrokinetic capillary chromatography by F. Ferreres, M.A. Blazquez, M.I. Gil and F.A. Tomds-Barberan (Murcia, Spain) (Received January 28th, 1994) 268 DISCUSSION 2-Trichloromethylbenzimidazole as a selective chromogenic reagent for the detection of some azoles on thin-layer plates by L. Konopski and E. Pawtowska (Warsaw, Poland) (Received January 21st, 1994) ERRATA AUTHOR INDEX NEWS SECTION