VOL. 556, NOS. 1 +2 JOURNAL OF CHROMATOGRAPHY SEPTEMBER 6 199] CONTENTS HONOUR VOLUMES ON THE OCCASION OF THE 60TH BIRTHDAY O! GEORGES A. GUIOCHON PART |: VOLUME 556 Preface by B. L. Karger (Boston, MA, USA) XIII Methods of equilibrium concentration for the gas chromatographic determination of trace volatiles (Review) by A. G. Vitenberg (Leningrad, USSR) s chromatography a separation proces? The zonoid answer (Review) by P. Valentin (St. Symphorien d°Ozon, France) Some aspects of optimization in plan if chromatography (Review) by A.-M. Siouffi (Marseille, France) New approach for calculating ideal chromatograms from arbitrary composite distribution isotherms by H. Poppe (Amsterdam, Netherlands) Improved computer algorithm for characterizing skewed chromatographic band broadening. | Method by W. W. Yau and J. J. Kirkland (Wilmington, DE, USA) Analysis of isotachic patterns in displacement chromatography by F. D. Antia and C. Horvath (New Haven, CT, USA) Method for characterization of selectivity in reversed-phase liquid chromatography. V. Calibration of the retention scale for chromatographic systems with low concentrations of organic sol vents in the mobile phase by P. Jandera and J. RozkoSna (Pardubice, Czechoslovakia) Analysis of the separability of plate height into overload and intrinsic contributions using the kinetic model of non-linear chromatography by C. A. Lucy (Chalk River, Canada) and P. W. Carr (Minneapolis, MN, USA) Factor analysis and experimental design in high-performance liquid chromatography. XI. Factor analysis maps and chromatographic information by M. Righezza (Orleans, France) and J. R. Chrétien (Paris, France) Measurement of partition coefficients by various centrifugal partition chromatographic techniques A comparative evaluation by N. El Tayar, R.-S. Tsai, P. Vallat, C. Altomare and B. Testa (Lausanne, Switzerland) Experimental study on the effect of the sample size on the band profile for a binary mixture showing no competitive interaction by A. M. Katti (Basle, Switzerland) Prediction of single and binary profiles in overloaded elution chromatography using various semi ideal models by A. M. Katti (Knoxville, TN, USA) and M. Czok and G. Guiochon (Knoxville and Oak Ridge, TN, USA) Description of retention mechanism by solvophobic theory. Influence of organic modifiers on the retention behaviour of homologous series in reversed-phase liquid chromatography by S. Heron and A. Tchapla (Orsay, France) Vill CONTENTS PART I Dispersion in round tubes and its implications for extra-column dispersion by A. Shankar and A. M. Lenhoff (Newark, DE, USA) Peak-shape analysis and noise evaluation in suppressed ion chromatography for ultra-trace ion inalysis by G. Blo, M. Remellanid F. Pedrielli (Ferrara, Italy), L. Balconi and F. Sigon (Milan, Italy) ind F. Dondi (Ferrara, Italy) Investigation of the causes of reduced efficiency in micellar liquid chromatography by Berthod (Villeurbanne, France) and M. F. Borgerding and W. L. Hinze (Winston Salem, NC, USA) Adsorption isotherms of phenylalanine in a chromatographic column measured simultaneously by system peaks analysis and frontal analysis by S. Levin and S. Abu-Lafi (Jerusalem, Israel) Optimisation pentaparameétrique de la résolution en chromatographie phase gazeuse par la technique du diagramme a fenetres. Cas du couplage de deux colonnes par J. M. Fougnion, C. David, A. Croeg et C. Genty (Paris, France) Quantitative resolution of severely overlapping gas chromatographic peaks. Isothermal and temper ature-programmed operation by J. T. Lundeen and R. S. Juvet, Jr. (Tempe, AZ, USA) Thermodynamics of solution of non-mesomorphic solutes at infinite dilution in the smectic-A, ne matic and isotropic phases of p-n-octyl-p’-cyanobiphenyl. A gas-liquid chromatographic study by S. Ghodbane, G. A. Oweimreem and D. E. Martire (Washington, DC, USA) High-speed gas chromatography. Theoretical and practical aspects by G. Gaspar (Les Ulis, France) High-performance liquid chromatography on dynamically modified silica. IX. Modification of silica with 3-(N,N-dimethylpalmitylammonium) propansulphonate for reversed-phase chromato graphy by S. H. Hanssen and J. Tjornelund (Copenhagen, Denmark) Chromatographic characterization of ion exchangers for high-performance liquid chromatography of proteins. I. Chromatographic determination of loading capacity for low- and high-molec ular mass anions by D. Bentrop and H. Engelhardt (Saarbriicken, Germany) Synthesis of chemically bonded liquid crystals for high-performance liquid chromatography. New phases via the organochlorosilane pathway by J. J. Pesek, M. A. Vidensek and M. Miller (San Jose, CA, USA) Hydroquinone oxidation kinetics in adsorptive liquid chromatographic beds by C.-Y. Jeng and S. H. Langer (Madison, WI, USA) Impact of acid/hydrothermal treatment on pore structural chromatographic properties of porous silicas. 1. The conventional approach by K. K. Unger and K. D. Lork (Mainz, Germanya)nd B. Pfleiderer, K. Albert and E. Bayer (Tubingen, Germany) Effect of silanol groups on heat-treated silicas by calcination and retention behaviour in high-pet formance liquid chromatography by M. Okamoto (Gifu, Japan), K. Nobuhara (Aichi, Japan) and K. Jinno (Toyohashi, Ja pan) Use of the reordening/resolvation of alkyl-modified silica to characterize the microscopic hetero geneity of silica via liquid chromatography by R. K. Gilpin and L. Wu (Kent, OH, USA) New solid adsorbents for the separation of lower hydrocarbons and permanent gases. II. Ammonium molybdophosphate by V. S. Nayak (Guelph, Canada) CONTENTS PARTS | AND I Dynamic gas-solid chromatographic techniques for characterizing carbon molecular sieves by W. R. Betz and S. J. Lambiase (Bellefonte, PA, USA) Chromatographic determination of the physico-chemical parameters of adsorption on active carbons by Z. Witkiewicz, H. Grajek and J. Choma (Warsaw, Poland) Influence of solute size and the non-polar interaction term on the selection of test solutes for the classification of stationary phase selectivity in gas chromatography by T. O. Kollie and C. F. Poole (Detroit, MI, USA) Gas chromatographic comparative study of Superox 20M immobilized in different ways by E. Fernandez-Sanchez, A. Fernandez-Torres, J. A. Garcia-Dominguez and M. D. Salva dor-Moya (Madrid, Spain) Fluorescence detection in liquid chromatography with an intensified diode-array detector by T. L. Cecil and S. C. Rutan (Richmond, VA, USA) PART Il: VOLUME 55 Foreword by M. Martin (Paris, France) Split injection into a capillary column at very low split ratios by S. Witar (Prague, Czechoslovakia) On-line electrochemical reagent generation for liquid chromatography with luminol-based chem- iluminescence detection by O. M. Steijger (Utrecht, Netherlands), G. J. De Jong (Weesp, Netherlands) and J. J. M Holthuis and U. A. Th. Brinkman (Amsterdam, Netherlands) Quantitative determination limit in chromatography: computer-based simulations by M. Z. El Fallah and M. Martin (Paris, France) Laser-excited fluorescence detection of gas-phase chromatography eluates by S. J. Hein and E. H. Piepmeier (Corvallis, OR, USA) and L. C. Thomas (Seattle, WA, USA) Separation of trans/cis-a- and B-carotenes by supercritical fluid chromatography. I. Effects of temper- ature, pressure and organic modifiers on the retention of carotenes by M.-C. Aubert, C. R. Lee and A. M. Krstulovic (Meudon-la-Forét, France) and E. Lesel- lier, M.-R. Péchard and A. Tchapla (Orsay, France) Separation of trans/cis-a- and f-carotenes by supercritical fluid chromatography. II. Effect of the type of octadecyl-bonded stationary phase on retention and selectivity of carotenes by E. Lesellier and A. Tchapla (Orsay, France) and M.-R. Peéchard, C. R. Lee and A. M Krstulovic (Meudon-la-Forét, France) Magnitude of the diffusion coefficient anomaly in the critical region and its effect on supercritical fluid chromatography by K. D. Bartle, D. L. Baulch, A. A. Clifford and S. E. Coleby (Leeds, UK) Packed column supercritical fluid chromatography with carbon dioxide—polar modifiers. Influence of carbon dioxide density on retention by A. Villermet, D. Thiébaut, M. Caude and R. Rosset (Paris, France) Quantitative aspects of the determination of compounds with widely varying polarity using capillary supercritical fluid chromatography by L. Karlsson, L. Mathiasson, J. Akesson and J. A. Jonsson (Lund, Sweden) Bile salt surfactants in micellar electrokinetic capillary chromatography. Application to hydrophobic molecule separations by R. O. Cole and M. J. Sepaniak (Knoxville, TN, USA), W. L. Hinze (Winston-Salem,NC, USA) and J. Gorse and K. Oldiges (Barea, OH, USA) CONTENTS PART II Electroosmotically driven electrochromatography of anions having similar electrophoretic mobilities by ion pairing by W.D Pfeffer and I S. Yeung (Ames, IA, USA) Flip—flop elution concept in preparative liquid chromatography by H. Colin and P. Hilaireau (Champigneulles, France) and M. Martin (Paris, France) Simulated distillation of distillates on capillary columns: influence of the polarity of the stationary phase by M. Dorbon, S Lamaison 4. Chevalier (Vernaison, France) Chiral z-donor stationary phases with (R)-N-pivaloylnaphthylethylamide groups for direct enantiomer separation by zas, liquid and supercritical fluid chromatography by R. Briigggeeer , P Krahenbihl, A. Marti, R. Straub and H. Arm (Berne Switzerland) Chiral stationary phase designed for blockers by W. H. Pirkle and J. A Burke, III (Urbana, IL, USA) Enantiomeric distribution and ‘°¢ C isotope ratio determination of lactones: appropriate meth ods for the differentiation between natural and non-natura flavours? by S. Nitz, H Kollmannsberger, B. Weinreich and F. Drawert (Freising-Weihenstephat Germany) Coupled column chromatography in chiral separations: systems employing /-cyclodextrin phase or chiral separation by A. M. Rizzi and C. Plank (Vienna, Austria) Influence of counter-ion inclusion complexation o1 the quality of cyclodextrin-supported separations in isotachophoresis by I. Jelinek, J. Snopek and E. Smolkova-Keulemansova (Prague, Czechoslovakia) Enantiomer separation by chiral-phase liquid chromatography of urethane derivatives of natura diacylglycerols previously fractionated by reversed-phase liquid chromatography by B. G. Sempore and J. A. Bezard (Dijon, France) Capillary gas chromatography of ¢ branched alkyneso n squalane and liquid crystal stationa ary phases by L. Sojak, P. FarkaS and |. Ostrovsky (Bratislava Czechoslovakia), J Janak (Brno, Cze choslovakia) and J. R. Chrétien (Orleans and Paris France) Gas chromatography and gas chromatography—mass spectrometry study of hydrocarbons in Vlasta oil (Adriatic Basin) as the basis for geochemical interpretation by A. Alajbeg, A. Todoric, S. Svel-Cerovetkain d M. SuSteréic (Zagreb, Yugoslavia) Identification of chlorophyll transformation products in a lake sediment by combined liquid chroma tography—mass spectrometry by C. B. Eckardt, B. J. Keely and J. R. Maxwell (Bristol, UK) Characterization of a tryptic digest by high-performance displacement chromatography a spectrometry by J. Frenz, C. P. Quan, W. S. Hancock and J. Bourell (South San Francisco, CA, USA) Application of capillary zone electrophoresis to the characterization of multiple antigen peptides by A Pessi E Bianchi, L. Chiappinelli, A. Nardi and S. Fanali (Rome, Italy) Separation and indirect detection of amino acids as acetylated derivatives by D. Yuan and D. J. Pietrzyk (lowa City, IA, USA) Dye-—ligand affinity partitioning of lactate dehydrogenase isoenzymes by J. Kirchberger and G. Kopperschlager (Leipzig, Germany) and M. A. Vijayalakshmi (Compiégne, France) High-performance liquid chromatography of amino acids, peptides and proteins. CXIV Protein interactions with porous coulombic sorbents: comparison of experimental findings with pre dictions of several adsorption models by A. Johnston and M. T. W. Hearn (Clayton, Australia) CONTENTS PART II Performances and limits of plasma desorption mass spectrometry in the primary structure determina tion of proteins by J.-M. Schmitter (Palaiseau, France) Adsorption—desorption isotherm hysteresis of f-lactoglobulin A with a weakly hydrophobic surface by S. Lin, R. Blanco and B. L. Karger (Boston, MA, USA) High-performance liquid chromatography—atmospheric pressure ionization mass spectrometry of gymnemic acids by T. Imoto (Yonago, Japan), F. M. Yamamoto (Kyoto, Japan), A. Miyasaka (Yonago Japan) and H. Hatano (Yokosuka and Kyoto, Japan) Isolation and determination of flavonol glycosides from epilobium species by I. Slacanin, A. Marston and K. Hostettmann (Lausanne-Dorigny, Switzerland) and N Delabays and C. Darbellay (Conthey, Switzerland) Influence of mobile phase composition on evaluation of lipophilicity by partition chromatography I ? | by M. Kucha#, E. Kraus and M. Jelinkova (Prague, Czechoslovakia) Characterization and determination of organic compounds in the mutagenic XAD-2 extracts of drinking water by S. Onodera (Tokyo, Japan) ysis of industrial solvent mixtures in water using a miniature purge-and-trap device with thermal! desorption and capillary gas chromatography—mass spectrometry by A. P. Biancahndi M. S. Varney (Southampton, UK) and J. Phillips (Milton Keynes, UK) Analysis of nucleotides by high-performance liquid chromatography with phosphorus-selective de techior by W. Hu, H. Haraguchi and T. Takeuchi (Nagoya, Japan) Structure determination of sesquiterpenes in Chinese vetiver oil by gas chromatography-—tanden mass spectrometry by N. Sellier and A. Cazaussus (Paris, France), H. Budzinski (Talence, France) and M. Lebon (Paris, France) Retention behaviour of polycyclic aromatic hydrocarbons on a liquid-crystal bonded phase in re versed-phase liquid chromatography by K. Jinno, Y. Saito and R. Malhan née Chopra (Toyohashi, Japan), J. J. Pesek (San Jose CA, USA) and J. C. Fetzer and W. B. Biggs (Richmond, CA, USA) Theoretical analysis of measurement of building pollution parameters by gas chromatography by N. A. Katsanos and Ch. Vassilakos (Patras, Greece) Optimization of the gas chromatographic analysis of a standard mixture of polychlorodibenzo-p dioxins and polychlorodibenzofurans by J. Tabera, B. Jiménez, L. M. Hernandez and M. J. Gonzalez (Madrid, Spain) Confirmation of the structure of by-products in the synthesis of Modafinil by liquid chromatogra phy mass spectrometry by Th. Becue (Malabry, France) and M. Broquaire (Maisons-Alfort, France) Study of salt hydrates by gas-solid chromatography by T. A. Mills and C. S. G. Phillips (Oxford, UK) Analyse Ip ar chromatogrf aphie en phase gazeuse de la réaction de macrolactonisation de Mukaiyama par K. Halvorsen, J. C. Ader, I. Rico et A. Lattes (Toulouse, France) Cyclooxygenase and lipoxygenase arachidonic acid metabolism by monocytes from human immune deficiency virus-infected drug users by I. Ramis, J. Rosello-Catafau and G. Gomez (Barcelona, Spain), J. M. Zabay and f Fernandez Cruz (Madrid, Spain) and E. Gelpi (Barcelona, Spain) Structural investigation of oligomeric n-octylsilyl reversed phases by S. O. Akapo and C. F. Simpson (London, UK) XII CONTENPATRTS II Chromatographic trace analysis of some organic compounds in the environment using derivatiza tion-sorption concentration techniques. I. Gas chromatographic analysis of acrylates in air by J. Churatek, H. Pechova, A. Horna, R. Kotrla and K. Ventura (Pardubice, Czechoslova kia) futhor Index Vols. 556 and 557 *.+S ESInE artiEcEleEs EwEiEth EmEoEr eE EEt hanE EEo neE EEa utEhoErE, EEtEhe EnEaEm e ESo,f StheE aSutSho r to whEoEmE cSoErrSeSs pondSenEceE Ssh oulEd be aSddressSed is iEndicatedC im th e EES*** .* article heading by a 6-pointed asterisk (*) *. * * * SESS SSE SESS ESSE SESE SEES ESSE SESS ESE ESE EEE SESE REE COE EEE seeeeeeeeeeeeee *