ANALAO 1 08 (1 290) 1033-1 I 62 (I 983) September 1983THE ANALYSTTHE ANALYTICAL JOURNAL OF THE ROYAL SOCIETY OF CHEMISTRYCONTENTSI033 Inductively Coupled Plasma Source Mass Spectrometry Using Continuum Flow Ion Extraction-Alan L. Gray and Alan R. Date1051 In Sifu Gaseous Pre-treatment of Liver Extracts in a Modified Carbon Rod Atomiser During theDetermination of Eadmium and Lead-John W. Steiner and Harvey L. Kramer1060 Evaluation of Selenium Determination in Biological Material by Atomic-absorption Spectroscopy-Rodney J. Mailer and James E. Pratley1067 Relative Fluorescence Quantum Yields Using a Computer-controlled Luminescence Spectro-meter-Alun T. Rhys Williams, Stephen A. Winfield and James N. Miller1072 Studies of Calcium Ion-selective Electrodes in the Presence of Anionic Surfactants-Anthony J.Frend, Gwilym J.Moody, J. D. R. Thomas and Brian J. Birch1082 Voltammetric Study of the Mercury Dissolution Reaction Mechanism at Solid Electrodes-PaulKiekens, Marc Mertens, Charles Laire and Edward Temmerman1086 Automatic Titration by Stepwise Addition of Equal Volumes of Titrant. Part VIM. Determinationof Alkalinity and Total Carbonate in Sea Water-Axel Johansson, Sten Johansson and Gunnar Gran109’1 Determination of Dimetridazole Residues in Poultry Tissues by High-performance Liquid Chromato-graphy-Anthony Hobson-Frohock and Jayne A. Reader1096 Determination of Water i n Ethanol and in Moist Air-lrshad M. Pirzada and John H. Hills1102 Reversed-phase Paper Chromatographic Studies of Some Rare Earth Elements-C.G. Yeole and1108 Solvent Extraction of Rare Earth Metals with Crown Ethers-Lin-Mei Tsay, Jeng-Shang Shih and1114 Simultaneous Determination of Choline and Betaine in Some Fish Materials-Sana E. Valdes Martinez11 20 Spectrophotometric and Analogue Derivative Spectrophotometric Determination of Micro-amounts of Iron with 2,2’-Dipyridyl-2-benzothiazolylhydrazone-Raj Bhushan Singh, TsugikatsuOdashima and Hajime lshiiSpectrophotometric Study and Analytical Applications of the Complexes of Copper(l1) and Zinc(l1)w i t h Some Sulphonated Azo Dyes-Maria Pesavento and Teresa SoldiSubstituted N-Hydroxy-NN‘-diarylbenzamidines as Selective Extractants for the Spectrophoto-metric Determination of Vanadium(V) in the Presence of Acetic Acid or an Azide-Miss AbhaRani Jha and Rajendra Kumar MishraV.M. ShindeShaw-Chii Wu11281135SHORT PAPERS1141 Spectrophotometric Determination of Phosphate in Polluted Waters by Solvent Extraction ofMolybdenum Blue-Miss Abha Chaube and V. K. Gupta1144 Spectrophotometric Determination of Some Pyrazolidinedione Derivatives in PharmaceuticalPreparations-Michael E. El-Kommos1148 Selective Complexometric Method for Palladium Determination in Alloys Using Thiocyanate asReleasing Agent-Krishna Narayan Raoot, Sarala Raoot and V. Lalita KumariSpectrophotometric Determination of Rhodium( 111) in Thermocouple Wires Using Thiocyanate andRhodamine 6G-Sambamoortny Jaya, Talasila Prasada Rao and Tiruvesaloor Venkatarama Rama-krishnaSolvent Extraction Studies of Thorium(1V) w i t h Aliquat 336 as an Extractant-Miss Mangal R.CO M M U N I CAT1 0 N SSimple Modification t o a Commercially Available Atomic Vnpour Accessory t o Reduce MemoryEffects when Determining High Levels of Arsenic in Geological Materials-Charles H. BranchSimple and Rapid Procedure for the Determination of Lead in Whole Blood by Use o f a Slotted Tubeand Discrete Nebulisation Flame Atomic-absorption Spectrometry-Andrew Taylor and Alistair A.Brown11511255Shivade and Vijay M. Shinde115811591162 BOOK REVIEWSSummaries of Papers in this Issue-Pages iv, v, vi, vii, viii, ix, x, xi, xiiPrinted by Heffers Printers Ltd Cambridge EnglandEntered as Second Class at New York, USA, Post Offic