ANALAO 104 (1 244) 993-1 104 (1 979)ISSN 0003-2654November 1979993101710301037105010551062107010751083108710911094109711001102THE ANALYSTTHE ANALYTICAL JOURNAI- OF THE CHEMICAL SOCIETYCONTENTSREVIEW. Direct Analysis o f Solids by Atomic-absorption Spectrophoto-metry-F. J. LangmyhrDetermination o f Lead, Bismuth, Zinc, Silver and Antimony in Steel andNickel-base Alloys by Atomic-absorption Spectrometry Using DirectAtomisation o f Solid Samples in a Graphite Furnace-Svenerik Backmanand Rune W. KarlssonExtraction o f Nanogram Amounts of Cadmium and Other Metals from AqueousSolution Using H examet h y lenaammon i u m H examet h y lened i t h iocarbamateas the Chelating Agent-A. Dornemann and H. KleistDetermination of Microgram Arnounts o f Precious Metals Using X-rayFluorescence Spectrometry-Paul R.Oumo and Evert NieboerX-ray Fluorescence Determination of Platinum and Palladium i n PlatinumConcentrates Using a Solution Technique-Z. Cruickshank and H. C. MunroDetermination o f Iron(l1) in Rock, !Soil and Clay-L. Th. BegheijnDetermination o f Mercaptoacetic Acid in Hair Waving and Depilatory Products-N. Goetz, P. Gataud and P. BoreREPORTS BY THE ANALYTICAL METHODS COMMITTEEDetermination of Small Amounts o f Nickel in Organic Matter by Atomic-Microbiological Assay of Avoparcirr i n Animal Feeds and Pre-mixesabsorption SpectrometrySHORT PAPERSFast and Simple Polarographic Method for the Determination of Free andTotal. Sulphur Dioxide i n Wines and Other Common Beverages-P.Bruno,M. Caselli, A. Di Fano and A. TrainliDirect Differential-pulse Polarographic Determination of Mixtures o f FoodColouring Matters, Chocolate Brown HT, Tartrazine and Green S-A. G.Fogg and K. S. Yo03-(2'-Thiazolylazo)-2,6-Diaminotoluene as a Selective and Sensitive Reagentfor the Spectrophotometric Determination of Palladium-F. GarciaMontelongo, V. Gonzslez Diaz and C. R. Tallo GonzilezRapid Spectrophotometric Method for the Determination of Arsenic(1ll) inBorate Glasses-Saryoo Prasad Isingh, Ram Pyare, Gur Prasad and P. NathCO M M U N ICATIO N SAn Improvement in the Determination of Available Lysine in Carbohydrate-Ca I i brat i o n of Pro posed Wet - co ml bust i o n Pro ced u re with D ry- co m bust i o nrich Samples-R. J. Hall and K. HendersonMethod for the Determination of Total Carbon in Soils-R. C. DalalBook ReviewsSummaries of Papers in this Issue-Pages iv, vi, vii, x, xii, xivPrinted by Heffers Printers Ltd Cambridge EnglandEntered as Second Class at New York, USA, Post Offic