Analyst, September 1996, Vol. 121 141N Future Issues Will Include Novel Techniques for the Off-line Analysis of Liquid Process Streams by Mass Spectrometry-Alan Townshend, John D. Green, Warwick B. Dunn In-valve Solid Phase Extraction-Flow Injection Flame AAS Determination of Lead-Kate Grudpan, Ponlayuth Sooksa- miti, Horst Geckeis Analysis of Protein Bound Metabolites of Furazolidone and Furaltadone in Pig Liver by High-performance Liquid Chroma- tography and Liquid Chromatography-Mass Spectrometry- Elizabeth Horne, Aodhmar Cadogan, Michael O'Keeffe, Laurentius A. P. Hoogenboom Titrations with Electrogenerated Halogens in the Diffusion Layer of Interdigitated Microelectrode Array-Dusan Bustin, Stanislav Jursa, Peter Tomcik Spectrofluorimetric Determination of the S toichiometry and Association Constants of the Inclusion Complexes Ellipticinel Modified Beta-CD-Benito Del Castillo, M.Sbai, S. Ait Lyazidi, D. A. Lerner, M. A. Martin Lead Isotopic Analysis Using Multiple Collector-Inductively Coupled Plasma Mass Spectrometry Coupled with Modified External Correction Method for Mass Discrimination Effect- Takafumi Hirata Analytical Performance Testing of an Atrazine Immunoassay System-S. D. W. Comber, C. D. Watts, B. Young Precipitation Flow-injection Immunoassay for Human IgG- Gerald Gubitz, Andrea Hacker, J. M. Fernandez-Romero, M. D. Luque De Castro, Miguel Valcarcel Resolution of Partially Overlapped Signals by Fourier Analysis. Application to Differential-pulse Polarographic Responses- Renato Seeber, Davide Allegri, Giovanni Mori Fate of Metals in the Combustion of Industrial Waste Oils-C.Nerin, C. Domeno, A. Del Alamo, I. Echarri Enzymic Determinations with Rotating Bioreactors and Con- tinuous Flow/Stopped-flow Processing: Determination of Chol- ine Esters in Pharmaceuticals-Horacio A. Mottola, Beatriz Lopez Ruiz, Mercedes Sanchez-Cabezudo Determination of Ultratrace Amounts of Copper(I1) by its Catalytic Effect on the Oxidative Coupling Reaction of 3-Methyl-2-benzothiazolinone Hydrazone with N-Ethyl-N- (2-hydroxy-3-sulfopropyl)-3, 5-dimethoxyaniline-Takuji Kawashima, Satomi Ohno, Norio Teshima, Tsuyako Wata- nabe, Hideyuki Itabashi, Shigenori Nakano Gas Chromatographic-Mass Spectrometric Determination of Sulfamethazine in Animal Tissues using a MethylfTrimethyl- silyl Derivative-D.Glenn Kennedy, Andrew Cannavan, S. Armstrong Hewitt, W. John Blanchflower Surface Plasmon Resonance of Self-assembled Phthalocyanine Monolayers: Possibilities for Optical Gas Sensing-David A. Russell, Tim R. E. Simpson, Michael J. Cook, Michael C. Petty, Stephen C. Thorpe Pesticides by SPME. Results of the Round Robin Test-Janusz Pawliszyn, T. Gorecki, R. Mindrup Electrochemical Studies of Zinc in Zinc-insulin Solution- Christopher M. A. Brett, Rui M. Barbosa, Luis M. Rosario, Ana Maria Oliveira Brett Recent Evolution of Luminescent PET (Photoinduced Electron Transfer) Sensors-A. Prasanna De Silva, Thorfinnur Gunn- laugsson, Terence E. Rice Direct Monitoring of Ethanol and Formaldehyde Vapours Using Dehydrogenase-based Biosensors-Manus J. Denni- son, Jennifer M.Hall, Anthony P. F. Turner Effects of pH and Solvent on the Fluorescence Properties of Biomedically Important Benzamides. Application to the Deter- mination in Drugs and in Human Urine-Jean-Jacques Aaron, Mihaela Buna, Patrice Prognon, Georges Mahuzier Influence of Surface-active Compounds on Response and Sensitivity of Cholinesterase Biosensors for lnhibitor Determi- nation-G. A. Evtugyn, Herman Budnikov, E. B. Ni- kolskaya Mass-transport-controlled Steady-state Currents for Methanol in a Flow Injection System-Zbigniew Stojek, J. Gadomska, Mikolaj Donten, L. Nyholm In-capillary Derivatization With 1 -Methox y carbon ylindolizine- 3,5-dicarbaldehyde for High-performance Capillary Electro- phoresis-Shigeyuki Oguri, Toshiaki Tujiyoshi, Y asuyoshi Miki Optical Nitrite Sensor Based on a Potential-sensitive Dye and a Nitrite-selective Carrier-Gerhard J. Mohr, Otto S. Wolf- beis Improved Molecular Fluorescence Method for the Determina- tion of Selenium in Biological Samples-David Littlejohn, I. Harrison, G. S. Fell Analysis of Ampicillin and Cloxacillin in Capsules, Syrups and Suspensions by HPLC-R. B. Taylor, 0. Shakoor COPIES OF CITED ARTICLES The Royal Society of Chemistry Library can usually supply copies of cited articles. For further details contact: The Library, Royal Society of Chemistry, Burlington House, Piccadilly, London W1V OBN, UK. Tel: +44 (0)171-437 8656. Fax: +44 (0) 17 1-287 9798. Telecom Gold 84: BUR2 10. Electronic Mailbox (Internet) LIBRARY@RSC.ORG. If the material is not available from the Society's Library, the staff will be pleased to advise on its availability from other sources. Please note that copies are not available from the RSC at Thomas Graham House, Cambridge.