BOOKS
as micro (200 leading t o distinct types of sorption, and the book is organized along these lines. Chapter 2 includes a long discussion of the BET and other nionolaper methods as applied to nonporous solids. Chapter 3 concerns surface area and pore size distribution from physical adsorption data on porous solids. The reader is left uncertain as to the best way t o handle the hysteresis problem in calculation of pore size distribution. Chapter 4 considers adsorption on microporous solids which is a timely and needed review in view of the current importance of molecular sieves. Chapter 5 deals with conversion of adsorption data t o two dimensional equations of state by the Gibbs equation and interpretation from this point of yiew including a discussion of Ross and Olivier’s work with this approach. Chapter 6 on chemisorption, although not comprehensive, should be useful to workers in the field of catalysis. The text is concluded by a useful section on experimental methods. Sumerous figures and tables serve as docunientation and improve understanding of the various relationships throughout. The book is particularly recommended for workers in the adsorption field and should also be of value t o those interested in determining surface properties of solids. It provides an excellent, well organized, up to date review of British literature and limited reference t o U. S.work. In general, it is similar t o other review on the subject and does not appear as critical as the objective implies. Typography is excellent and no significant errors were noted. Author indexing is rather hard t o utilize.
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CAHN \ RECORDING VACUUM BALANCES GIVE YOU
THE Versatility in Sample Environments * Vacuum down to Reactive or inert gases * Flowing gases High & low temperatures
Versatilitv in Samnle Size
The Formation and Properties of Precipitates. Alan G. Walton. xi 232 puges. John SViley & Sons, 606 Third Ave., New York, N . Y . 10016. 1967. $11.
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Reuiewed by Lester C. Howick, Department of Chemistry, Unioersity of Arkansas, Fayetteoille, Ark. 72701.
I n this book Professor Walton presents a readable and current introduction into the state of our knowledge concerning precipitate formation and properties. While providing a quantitative approach, he does not allow the presentation to become overly mathematical and constantly stresses the interpretation and meaning of the expressions as well as commenting upon the presence or absence of experimental support for their acceptance. 80A
Circle NO. 180 on Readers’ Service Card ANALYTICAL CHEMISTRY
Circle NO. 97 on Readers Service Card
BOOKS
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The treatment begins with a discussion of nucleation phenomena and crystal growth kinetics. These concepts are then intimately involved in the later chapters on coprecipitation, surface properties and morphology in such a manner as to display the interrelationship between the initiation and growth processes and the properties of the final product. Kot only is this aspect clearly exhibited, but the author also points out the importance of a fundamental knowledge of precipitation from solution to the areas of analytical and physical chemistry, physiology, and geophysics. Of particular interest to American readers will be Chapter 6 contributed by Dr. Helga Furedi of the Ruder BoSkoviC Institute of Zagreb, Yugoslavia. This chapter is a great contrast to the remainder of the book in that it departs from the fundamental descriptions and interpretations and explores graphical and three-dimensional graphical methods of representing multicomponent precipitation systems. Utilizing the methods that have recently come into popularity in this country for solving equilibrium relationships, this work applies the technique to some extremely complex precipitation problems. Although essentially a review of material in the literature, many of the original articles are in the Croatian journals and not readily available in translation. The book is well illustrated with ample drawings and graphs and the chapters are Jvell referenced with articles into 1966 included. I n addition to the more common subject and author indexes, there are included organic compound and inorganic compound indexes !yhich should prove very helpful t o many readers. In summary, Professor Walton has presented an excellent over-view of an extremely important and active area of chemical research. This book should prove extremely valuable t o scientists and students just beginning work in this area, to those active in the area for suggestions of neTT relationships and insights, and to those working in related areas, who wish to review and update their knowledge.
New Books Separation Techniques in Chemistry and Biochemistry. Roy A . KelZer,
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Editor. xvi 415 pages. Marcel Dekker, 96 Madison Ave., New York, N . Y . 10016. 1967. $12.75. The Nineteenth Annual Summer Symposium on Analytical Chemistry, entitled “Separation Techniques,” was held a t the University of Alberta, Ed-
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Circle No. 181 on Readers’ Service Card
VOL. 39,
NO. 14, DECEMBER 1967
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