VOLUME 33. NO. 4. APRIL, 1956
199
controlled potential electrolysis, coulometry a t controlled potential, microcoulometry, and derivative polarography. The brief discussions of kinetic and catalytic currents, adsorp tion waves and interpretation of m a x i m are in keeping with the introductory nature of the book. In this respect the author has done an excellent job of keeping the discussions concise while adequately covering the more important theoretical foundations of polarography. The experiments found a t the end of the chapters are well chosen to illustrate the principles considered in the text. The chapters dealing primarily with techniques offer many valuable suggestions to those having little or no experimental experience in polarographic techniques. In addition to the inclusion of classical amperometrio titretions, a discussion of the techniques and interpretation of amperometric titrations with two identical indicator electrodes and potentiometric titrations at constant current with one or two indicator electrodes might have been given, since the interprets, t,ion of these titrations is based on current-voltage curves of the substances involved. This book will be welcomed by students, teachers, and research workers alike as an excellent textbook in polarography and as a valuable guide for experimental work. RICHARD C. BOWERS
topics clearly presented. Tables of solubilities, atomic weights, and the periodic table are given inside the back and front covers, making them easily available to the student. In addition, eettine two books for less than the usual mice of one would be a welcome change for most students. The system of analysis follows the traditional hydrogen sulfide method. The Bronsted theory of acids and bases is followed and is presented in a separate section in the chapter dealing with ionization. Its applications to hydrolysis, amphaterism, snd complex ions are treated in separate sections in the chapters dealing with these topics. Certain other topics are also treated in this way, making it possible to omit them without destroying the continuity of the bulk of the material. This makes it possible to use the text not only in a. separate course in qualitative analysis hut also as part of the first-year general chemistry which includes qualitative analysis, but in which there may not be time to deal wit,h all of t h r v topics. n a t h r r iuch scction contins qr&l proredures for fcrro- and hioh-nluminum slloys. Tllir is imiqtw katurc of rhc text wl.irll orovidcs rhr inrtructor with 9 mmnc c,f modiirine. the general of the laboratory or providing dditibnai material far special groups such rts the more advanced, rapid, or sifted fit,ndent,s.
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Non~~wesU r ~~nr ~~ ~ ~ s r r r EVANBTON. ILLINOIB
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QUANTITATIVE ANALYSIS: METHODS OF SEPARATION AND MEASUREMENT
M. G. Mellon, Professor of Analytibal Chemistry, Purdue Uni694 pp. versity. Thomas Y. Crawell Co., New York, 1955. x Figs. and tables. 16 X 24 cm. $6.50.
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T ~ r book s is divided into three main sections: I. General Prinoiples, 11.Laboratory Exercises, 111. Problems. In the first section, sampling and separation processes are discussed a t length with individual chapters on separation by volatilization, precipitation, electrochemical, and partition processes. The second part of the section deals with the problem of measurement withespecial emphasis on titrimetry and chapters on colorimetry and electrometry. In the laboratory section, a library problem is found in addition to a. considerable number of laboratory determinations. The discussion of the treatment of experimental data includes an introduction to confidence limits and control chartt. The book oovers a rather wide range, from elementary points of technique to a good treatment of photometric analysis. I n this broad coverage, some detail is necessarily sacrificed and the author has chosen to minimize the theoretical discussion and calculations of ionic equilibria on the basis that these are mastered in qualitative analysis. This assumption might be questioned in view of the diminishing role which qualitative analysis plays in some onrriculs. The organization of the book is such that in the laboratory exercises as well ss in the theory somewhat advawed subjects precede more elementaly ones. This may create problemsfor the tertcher of less mature students.
more problems on his own. This reviewer believes that answers to odd problems are sufficient, giving the instructor more flexibility in their use, and preventing the student's working "toward answers." A. A. MEYER
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NEW METHODS IN ANALYTICAL CHEMISTRY
Ronald Belcher, Reader in Analytical Chemistry, University of Birmingham, and Cecil L. Wilson, Reader in Analytical Chemiskv. The Oueen's Universitv of Belfast. Reinhold Publishino CO&., ~ e w -Yark, 1955. 2 287 pp. 1 fig. 10 tables. 14.5 X 22 cm. $5.50.
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W ~ n 81 r new gravimetric and volumetric analyses based upon 385 research articles published chiefly during the last 20 years, this book will be a valuable source of information to any chemist with analytical problems. New advances in the classical analytical methoda tend to be overshadowed by the present trend toward instrumentation, hut these advances are being made and this book mtlv , describes them. New gravimetric and titrimetrie methoda are given for the elements Al, Sb, As, Ba, Be, Bi, Br, Cd, Crt, CI, Co, Cu, F, Ge, I, Fe, Pb, Li, Mg, Mn, Hg, Mo, Ni, Pd, P, K, Rb, Se, Si, Ag, Ns,S, Te, TI, Th, Ti, W, V, Zn, and Zr, and for the ions of ammonium, hromate, bromide, chlorste, chloride, cyanide, dichromate, ferrieymide, fluoride, iodate, nitrate, permanganate, LUCY W. PICKETT persulfate, sulfate, sulfide, sulfite, thiocyanate, thiosnlfate, and M o o m H o ~ r o COLGEOE x~ vanadate. New methods are also eiven for the determination of , ~sa~c~nam~Ta S o m n H m ~ r ; uM hydraaine, hydrogen peroxide, p&nylhydr&zine, and sulfurous acid and for the calcium hardness of natural water. Other sections are included on indicators, extractions, and multipurpose 0 SEMIMICRO QUALITATIVE ANALYSIS and other reagents. The list of new organic reagents ia imposing. Edwin 0.Flagg, University of Rochester, Willard R. Line, No claim is made by the authors that the book covers the field University of Rochester, and John F. Flagg, Knolls Atomic Power completely to date, nor have they personally checked all of the Laboratory, General Electric Company. D. Van Nostrand Co., methods described, but they have done so with a reasonable New York, 1954. viii 238 pp. 15.5 X 23.5 cm. 53.25. number of them while others have been included which were recommended to them by investigators repute. THIScombination text and laboratory manual is a revision of looking far of recent research in gravi~l~~~ and ~i~~ u ~ ~~ ~~ i ~~ ~ l ~ i li ~ ~FOT. ~i ~those ~ ~. w ~~ i an~evaluation ~ the metric and volumetric analysis, this book should prove most while the book has been completely rewritten with a ably expended theoretical section, it retains the experimental helpfu1. procedures and much of the form of the earlier one. V. R. DAMERELL This book seems to be written with the student in mind. The WE,,.,, R E ~ E ~ VUEN I V E R B I T ~ CLEYELAAD, OHIO large type is easily read, the illustrations quite lucid, and the
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