Table Of Content

ANALYTICA CHIMICA ACTA An International journal devoted to all branches of analytical chemistry (Full texts are incorporated in CJELSEVIER, a file in the Chemical Journals Online database available on STN International; Abstracted, indexed in: Aluminium Abstracts; Anal. Abstr.; Biol. Abstr.; BIOSIS; Chem. Abstr.; Curr. Contents Phys. Chem. Earth Sci.;Engineered Materials Abstracts; Excerpta Medica; Index Med.; Life Sci.; Mass Spectrom. Bull.; Material Business Alerts; Metals Abstracts; Sci. Citation Index) VOL. 317 NO. 1-3 CONTENTS DECEMBER 20, 1995 Chemometrics Comparison of an adaptive resonance theory based neural network (ART-2a) against other classifiers for rapid sorting of post consumer plastics by remote near-infrared spectroscopic sensing using an InGaAs diode array D. Wienke, W. Van den Broek, W. Melssen, L. Buydens (Nijmegen, Netherlands), R. Feldhoff, T. Kantimm, T. Huth-Fehre, L. Quick, F. Winter and K. Cammann (Monster, Germany)... .....0.02 .e. eee. ee. ee eee Assessment of peak purity in liquid chromatography using condition index and singular value evolving profiles Y.-L. Xie, J.J. Baeza-Baeza and G. Ramis-Ramos (Valéncia, Spain) .....2.2. ee .ee e.e e.e ee. ee. ee e Elucidating the composition of atmospheric aerosols through the combined hierarchical, non-hierarchical and fuzzy clustering of large electron probe microanalysis data sets B. Treiger, |. Bondarenko, H. Van Malderen and R. Van Grieken (Antwerp, Belgium)..............2-02200- How chemometrics can helpfully assist in evaluating environmental data. Lagoon water E. Marengo, M.C. Gennaro, D. Giacosa, C. Abrigo, G. Saini (Turin, Italy) and M.T. Avignone (Venice, Italy) ....... Ancient resinous substances characterisation, an approach by principal component analysis C. Vieillescazes, J.-L. Larice and S. Coen (Avignon, France)... 2... 2... ce ee ee ee ee eee PKPOT, a program for the potentiometric study of ionic equilibria in aqueous and non-aqueous media J. Barbosa, D. Barrén, J.L. Beltran and V. Sanz-Nebot (Barcelona, Spain)... 2... 2... 2... ee eee ee ee eee A contribution to the derivative ratio spectrum method J.M. Garcfa, O. Hernandez, A.|. Jiménez, F. Jiménez and J.J. Arias (Tenerife, Spain) ..............222006- Multivariate calibrations in Fourier transform infrared spectrometry for prediction of kerosene properties S. Garrigues (Corufia, Spain), J.M. Andrade, M. De la Guardia (Valencia, Spain) and D. Prada (Corufia, Spain).... . Numerical simulation of crude oil behaviour from chromatographic data Ph. Burg, J.-L. Selves (Toulouse, France) and J.P. Colin (Boussens, France)... .....0.0 .ee. ee0 een s Automated conductometry: robotic station for analytical titrations R. Cazallas, L.A. Fernandez and A. De Diego (Bilbao, Spain)... 2... .. eee ee ee ees Chromatography Determination of pyrethroid insecticides by ion tap GC-MS-—MS GF. Bauverte, Jr., KL. Ray and J.B. Grodbelt (Austin, UGA) 2... ccc ccc cece c cece cesesseer Transport of organochlorine pesticides across the air/sea interface during the aerosol process L. Lepri, P. Desideri, R. Cini, F. Masi and M.S. Van Erk (Florence, Italy)... ..... 0... eee ee ee ee ee ee Evaluation of sample preparation methods for organotin speciation analysis in sediments — focus on monobutyltin extraction M. Coulamene end F.C. Adame (Antwerp, Belem) . www ieecece rr ee nserece ereees Monitoring of the ultrasonic irradiation effect on the extraction of airborne particulate matter by ion chromatography L.R.F. Carvalho, S.R. Souza, B.S. Martinis (S&o Paulo, Brasil) and M. Korn (Bahia, Brasil) ..............206. Effect of aliphatic alcohols as mobile phase modifiers on separation of phenylurea and phenoxyalkyl acid herbicides by micellar electrokinetic capillary chromatography Rs se ce eu ode ee eee ae eee ene keene d kee Sead (Continued overleaf) A ternary complex system for the reversed-phase chromatography of chromate =, Tart ered G., Gotenell Cae are, GRID wg cc cc tee reece cere er eswbes lon Exchange Chromium(II) binding abilities of humic acids M. Fukushima, K. Nakayasu, S. Tanaka and H. Nakamura (Sapporo, Japan) ......20.0 e.e e.ee. ee.e e ee Application of ion-exchanger phase visible light absorption to flow analysis. Determination of vanadium in natural water and rock S. Matsuoka, K. Yoshimura and A. Tateda (Fukuoka, Japan) .. 2... . ce eee ee eee eee eee eens 207 Flow Injection Flow injection sorbent extraction with dialkyldithiophosphates as chelating agent for nickel, cobalt and manganese determination by atomic absorption spectrometry i sol a 8 i aaa bes bbe 0 4 oe 68 84 EO 215 Characterization and application of an on-line flow injection analysis/wall-jet electrode system for glucose monitoring during fermentation Y.L. Huang, T.J. Foellmer, K.C. Ang, S.B. Khoo and M.G.S. Yap (Singapore, Singapore) ...............24. 223 Chemiluminescent determination of tryptophan in a flow injection system rego Sk a O e oe ee ee ee 00 ee ee 233 Sequential analyte removal in flow analysis: determination of nitrogen, phosphorus and potassium in fertilizers P. Benedini Martelli, JA. Gomes Neto, E.A.G. Zagatto (Piracicaba, Brazil), S.M. Boscolo Brienza, M.C.B.S.M. Mon- er Se RP PD os ee nes es eae heb eee Ob eee eb eeeeeeeceees 239 On-line and off-line monitoring of the production of alkaline serine protease by Bacillus licheniformis A.B. Van Putten (Bagsvaerd, Denmark), F. Spitzenberger, G. Kretzmer, B. Hitzmann and K. SchUgerl (Hannover, iti Me ae Aha Lhe 6 46% SE So Oe oes 04 SR ORS OR OS OO 4% 6 me ORES 247 Electroanalytical Chemistry and Sensors Development of biosensors based on an electrolyte isolator semiconductor (ElS)-capacitor structure and their application for process monitoring. Part |. Development of the biosensors and their characterization C. Menzel, T. Lerch (Hannover, Germany), T. Scheper (Munster, Germany) and K. Schigerl (Hannover, Germany). . . 259 General model for the steady-state response properties of fiber-optic ammonia gas sensors I gg ge a a SGN ks yo ow eee ees 265 Improvement of the analytical characteristics of an enzyme electrode for free and total cholesterol via laponite clay additives J.-L. Besombes (Le Bourget du Lac, France), S. Cosnier, P. Labbé (Grenoble, France) and G. Reverdy (Le Bourget du ok RG Bi ce Sea a ee be ice ee ie Wie ge hid 4 Gdn ob ae ae a eee 275 Toward development of a humidity correction algorithm for surface acoustic wave sensors. Part 3. Water, nitrobenzene and 2-nitrotoluene adsorption on platinum/lead coated piezoelectric sensors EE a a 281 Amperometric method for the determination of nitrate in water NE a ar rare 287 Study of the chelation of boron with Azomethine H by differential pulse polarography, liquid chromatography and capillary electrophoresis and its analytical applications D.A. Oxspring, S. McClean, E. O’Kane and W.F. Smyth (Coleraine, UK)... ....02.. ee.e ee. ee e.e ee eee 295 Covalent modification of carbon electrodes for voltammetric differentiation of dopamine and ascorbic acid A.J. Downard, A.D. Roddick (Christchurch, New Zealand) and A.M. Bond (Bundoora, Australia) .............. 303 Anodic stripping voltammetric determination of total lead in anencephalic fetuses after pressure/temperature-controlled microwave mineralization J.E. Tahan, L. Marcano and R.A. Romero (Maracaibo, Venezuela) .....0. .eee. eee. ee. ee.e e.ee eee 311 Study of the catalytic polarographic reduction of Ni(II) in the presence of albumin, immunoglobulins and serum proteins. Determination of total proteins in serum A. Sanchez Perez and J.E. Fuentes de Frutos (Salamanca, Spain)... .....c.ee .ee e.ee .eee .eee eee 319 Stripping voltammetry of heavy metal/polyelectrolyte complexes. Part 2. Analysis in terms of polyelectrolyte theory M.A.G.T. Van den Hoop (Bilthoven, Netherlands), J.C. Benegas (San Luis, Argentina) and H.P. Van Leeuwen (Wageningen, Netherlands).... . ed a ¢ cada bp eRe Ce Cone RES oe Fee eee eae eee hs Fluorimetry On-line coupling of isolation/in situ concentration integrated with derivative synchronous spectrofluorimetry for the simultaneous determination of epinephrine and norepinephrine in urine P. Caftizares and M.D. Luque de Castro (Cérdoba, Spain) Investigation of fluorescence efficiency in the europium—thenoyltrifluoroacetone chelate in aqueous and ethanolic solutions by laser-induced fluorescence and photothermal spectroscopic methods J. Georges (Villeurbanne, France) A new rapid fluorimetric method for the determination of carbonic anhydrase H.-N. Li and Y.-X. Ci (Beijing, China) Direct determination of quinidine in urine J.A. Murillo Pulgarfn and A. Alafién Molina (Ciudad Real, Spain) Atomic Emission Spectrometry Determination of small amounts of palladium in wastes from reworking of spent catalysts by microwave induced plasma atomic emission spectrometry K. Jankowski (Warsaw, Poland) Author Index