OOK REVIEWS he general approach of the book seems indicate a greater interest in the hanics of problem solution rather I emphasis on the basic physical chemprinciples. This is not in keeping with modern t,rends in the field in this ,try. The well-known book by SilLange and Gabrielson, is, in general, er in this respect,. This aspect may be illustrated by the first of the exle problems on solids. The problem s data stating that, triaza-adamantane tdlises in fsee-eentered lattice whieh m y has n multiplicity (number of :cules per unit cell) of 2. They then ent data for the measurement of the line in the Debye-Scherrer powder ram which they say results from ctions of t,heplanes with Miller indices ) = 123. The resulting density which calculate agrees well with the rured density. However, the actual tal is hody-centered cuhie, a fact :h they seem to use in the solution. s "fsce-rentered cuhie" may he merely error in trxnslation. Nevertheless, reflection from the 123 planes will be 7th rather than the 10th line for a *centered labtiee, the 13th for a.simple c lattice and would not even appesr in :e-centered dillrection pattern because ystematic extinction. I t is only fair ry that this is the only instance of this noted, yet it. serves t o illustrate the ral approach and concern of the OR. lis book is valuable for the vast ?ty of prohlems with experimental which i t contains hut should be with some caution in areas where one not have s basic understanding of mderlying theory.
JAMBS H. LOEHLIN College of Wooster TVooster, Ohio Exchange Separations in Analytical nirtry
of Samuelaon, Chalmers University Technology, Goteborg, Sweden. mquist and Wiksell, Stockholm, and hn Wiley and Sons, h e . , New York, 63. 474 pp. Figs. and tables. 15.5 23.5 cm. 89.50. ,is is advertised as 8. new book rather a. new edition of the author's "Ion ,angers in Analytical Chemistry" ished in 1953 and reviewed in THIS WAL 30, 596 (1953). The author has ned thc snma organization as in the E r book but has enlarged, revised and ~ t e dthe material presented in each on. The bibliographies for all secI seem quite eomplete for papers ished thmugh 1961, and include s. t number of ioreign-language papers ;merally avxilablc in this country. le Introduction is virtually unchanged ~ n t e n and t lcngth (11 pages) from the book. The General Part has been nded from 59 to 120 pages. Major tions have been made in the section led Fundamental Properties, includsome material concerning ellelating
resins and the sorption of complex ions. The section on Ion-Exchange Equilibria is mare complete, and now contains s. dctailed discussion of equilibrium st trace concentrations. The mathematical treatment is elementary and designed for the practical use of analytical chemists. Kinetics and Column Operation are again given only cursory treatment. One of the most important additions t o the new book is s. %page discussion of Applications of tho Plate Theory, whieh explains the simplest way to enlculate separation eonditions after a minimum of preliminary experiments. This part ends with a discussion of Non-Aqueous Solutions, s. topic completely ignored before. The Practical Part treats in 85 pages (increased from 45) the techniques for choosing the propcr resin and performing ion-exchange and ion-oxclrange-chrom;ttographic separations. The mcthads dcscribed are those developed in the author's laboratory over the past 30 years. R c fined techniques which have became important since the earlier book are d c scribed. These include gradient elution, methods for continuously analyzing ealumn eflluents, and the use of ion-exchange resins as precipitants. Only column and batch procedures are considered; ionexchange paper chromatography and thinlayer ian-exchange chromatography are barely mentioned in two concluding paragraphs. The heart of the book is the section on Applications. This part has been increased from 144 to 197 pages, but now is restricted entirely to separations important in the itnalyais of inorganic substances. Considering the many analyt,ically important separations of organic substances which have been developed on ion-exchange columns, especially during the past decade, it seems unfortunate that the author chose to ignore this area. I n most cases the procedures are only briefly summarized, in the expectation that those interested in specific separations will consult original research papers. I>etailed descriptions of a few specific applications developed in the author's laboratory are included for those completely unfamiliar with the field. The appendix contains a description oi commen:ially available ion-exchange resins. The book is conveniently ind~xed according to author and subject. Recently, a number of books on ion exchange and several treatises of awalyt icd chemistry or chromatography containing chapters on ion exchange have been ~ublished. For.the chemist who wants to have one of these in his library, this book is recommended. I t is z well-written, authoritative, understandable, although not exhaustive source of information for teachers wishing to incorporate material on ion exchange in their courses (especially anallytical courses) or far chemists beginning experimental work in the field. Those with an established interest in ion exchange can find more thorough, rigorous treatments of the subject, but will want this volume if only for reference, especially to the research work of its eminent author.
JOSEPH SHERMA Lafayette College Easton, Pennsylvania
