Analyst, June 1996, Vol. 121 91N Future Issues Will Include Chemometric Analysis of Ageing and Typification of the Vintage Ports-M. Cruz Ortiz, Luis A. Sarabia, Charles Symington, Fernando Santamaria, Montserrat Iniguez New Robust Multivariate Calibration Algorithm Based on Least Median Squares and Sequential Number Theoretical Optimiza- tion Method-Yi-zeng Liang, Kai-tai Fang Observation of Albumin Resonances in Proton Nuclear Mag- netic Resonance Spectra of Human Blood Plasma: N-terminal Assignments Aided by Use of Modified Recombinant Albu- min-Peter J. Sadler, Roy Harris, Sunil Patel, John H. Viles Spline Wavelet Multiresolution Analysis for High Noise Digital Signal Processing in Ultraviolet-Visible Spectrum-Mo Jing- yuan, Lu Xiao-quan High-performance Liquid Chromatographic Determination of Phenols Using a Tyrosinase-based Amperometric Biosensor Detection System-Malcolm R.Smyth, Olubunmi Adeyoju, Emmanuel I. Iwuoha, Dona1 Leech Traceability of Measurement in Chemistry-Yu. I. Alexandrov Entry Efficiency of the CIP- 10 Instrument Annular Aspiration Slot-Peter Gorner, Olivier Witschger, Jean-Francois Fabries Summary of the NIOSH Guidelines for Air Sampling and Analytical Method Development and Evaluation-E. R. Kennedy, Thomas J. Fischbach, Ruiguang Song, Peter M. Eller, Stanley A. Shulman Adsorption of Dissolved Trace Metals From Seawater Onto Solid Surfaces-Vlado Cuculic, Marko Branica Separation and Detection of Condensed Phosphates in Waste- waters by Ion Chromatography-Flow Injection-Ian D. McElvie, David J. Halliwell, Barry T.Hart, Roger H. Dunhill Uranyl Photophysics on Colloidal Silica: an Alternative Luminescence Enhancing Medium for Uranyl Assay-Martin Lopez, D. J. S. Birch Determination of Cyclic Organic Acid Anhydrides in Air Using Gas Chromatography. Part 1. A Review-B. A. G. Jonsson, C. H. Lindh, C. Gustavsson, H. Welinder, Pirkko PfaMi Enzyme-linked Immunosorbent Assay for Detecting Some Benzodiazepines in Urine-Frederick J. Rowell, David Laurie, A. J. Mason, Nigel H. Piggott, John Seviour, D. Strachan, J. D. Tyson Direct Determination of Some Phenothiazine Sedatives in Greyhound Urine by Fluoroimmunoassay-Frederick J. Rowell, A. Mounsey, D. Strachan, V. Rowell, J. D. Tyson New Acetylcholinesterase Amperometric Sensor Based on Tetraphenylporphyrin-Cobalt(I1) Modified Electrode- Shaojun Dong, Qing Deng End-point Determination On-line and Reaction Co-ordinate Modelling of Homogeneous and Heterogeneous Reactions in Principal Component Space Using Periodic Near-infrared Monitoring-Timothy Norris, Paul K.Aldridge Determination of Gasoline Oxygenates in Air Using a Diffusive Sampler-Martin Harper, Christina O'Lear, Amy A. Fiore Shipboard Determination of Dissolved Cobalt in Sea-water Using Flow Injection with Catalytic Spectrophotometric Detec- tion-Liliya K. Shpigun, Irina Ya. Kolotyrkina, Alexander Malahoff Nitrogen Factors for Sheepmeat. Part 2. Lamb Meat- Analytical Methods Committee Determination of Cyclic Organic Acid Anhydrides in Air Using Gas Chromatography. Part 2. Sampling and Analysis of Hexahydrophthalic Anhydride Methylhexahydrophthalic An- hydride, Tetrahydrophthalic Anhydride, and Octenylsuccinic Anhydride-B. A. G. Jonsson, C. H. Lindh, C. Gustavsson, H. Welinder, Pirkko PfaMi 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 WlV OBN, UK. Tel: +44 (0)171-437 8656. Fax: +44 (0)17 1-287 9798. Telecom Gold 84: BUR210. 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.