ANALAO 104 (1 239) 481 -592 (1 979)ISSN 0003-2654June 197948149150551 6525531538545552560566568572576580582584THE ANALYSTTHE ANALYTICAL JOURNAL OF THE CHEMICAL SOCIETYCONTENTSRelevance of the Approximately Hyperbolic Relationship Between Fluorescenceand Concentration t o the Determination of Quantum Efficiencies-NigelGains and Alan P. DawsonDetermination o f Cadmium in Blood and Urine by Flame Atomic-fluorescenceSpectrometry-R. G. Michel, M. L. Hall, J. M. Ottaway and G. S. FellEffect of Stray Light in Monochrornators on Detection Limits o f Flame Atomic-fluorescence Spectrometric Measurements-R. G. Michel, M. L. Hall, s. A. K.Rowland, J. Sneddon, J. M. Ottaway and G. S. FellSequential Multi-element Analysis of Small Fragments of Glass b y Atomic-emission Spectrometry Using an Inductively Coupled RadiofrequencyArgon Plasma Source-T.Catterick and D. A. HickmanSpectrophotometric Determination of Trace Amounts of Free Cyanide inPrussian Blue-G. J. Willekens and A. Van Den BulckePolarography o f Green S-F. E. PowellDetermination of Nitrogenous Gases Evolved from Soils in Closed Systems-Rapid Method for Determining Fluoride in Vegetation Using an lon-selectiveAutomated Catalytic Method for the Routine Determination of MolybdenumDetermination of the Prostaglandin F2cI Content o f Pharmaceutical Prepara-C. J. Smith and P. M. ChalkElectrode-Alberto Enrique Villain Plant Materials-B. F. Quin and P. H. Woodstions with Triangle Programmed Bromimetric Titration in FlowingSolutions-Zs.Feher, G. Nagy, K. T6th, E. Pungor and A. T6thSHORT PAPERSDetermination of Phenindione Using Organic Brominating Agents-A. Abou Ouf,M. I . Walash, M. Rizk and F. BelalApplication of Difference Spectrophotometry t o the Determination o fDipyrone-M. Abdel-Hady Elsayed, H. Abdine and M. E. Abdel-HamidSpectrophotometric Determination o f Cobalt(l1) with 2.2’-Pyridil Bis(2-quinolyl-hydrazone)-H. Kulshreshtha, R. B. Singh and R. P. SinghDetermination of Osmium(VIII) Alone or in Binary Mixtures with Some GroupVlll Cations by Potentiometric Titration o f lodide-H. Khalifa, N. T. AbdelGhani and M. S. RizkCOMMUNICATIONS *Gas Chromatographic - Mass Spectrometric Analysis o f Polyethylene BottlePacked Intravenous Solutions Contaminated with N-Ethylaniline from theRubber Part of the Two-component Closure-G. A. Ulsaker and G. TeienLuminescence Characteristics of Tubocurarine Chloride-Ernest P. Gibson andJames H. TurnbullBook ReviewsSummaries of Papers in this lssue-Pages iv, vi, vii, x, xii, xivPrinted by Heffers Printers Ltd Cambridge EnglandEntered as Second Class at New York, USA, Post Offic