Talanta,
1959, Vol.
2, pp. 195 to 196.
Pergamon
Press
BOOK
Ltd.
Printed
in Northern
Ireland
REVIEWS
A Manual of Paper Chromatography and Paper Ekctrophoresis. R. J. BLOCK, E. L. DURRUMand G. Z~EIG. Academic Press, Inc., New York: Academic Books Ltd., London. Second edition, 1958. Pp. xi f 710. $12.80. The object of this book, as stated by the authors, is to present some of the results of the numerous investigations on paper chromatography and paper electrophoresis so that the student may have a sufficient idea of past studies in order to allow him to choose the method which appears to be most promising for the solution of his particular problem. The authors have succeeded in organizing the large amount of material in a convenient manner and the descriptions of methods are readable and explicit. As in the first edition (1955), this book is divided into two parts. The first part, written by R. J. Block and 0. Zweig, is a practical manual on paper chromatography. The second and shorter part by E. L. Durrum is devoted to the practical aspects of paper electrophoresis. The section of paper chromatography (483 pp.) includes a short chapter on theory, two chapters on general and quantitative methods, ten chapters on specific procedures for various classes of organic compounds, and one chapter on inorganic separations. These procedures include solvent systems for separations, methods of detection of compounds on paper, and other pertinent information. The section on paper electrophoresis (185 pp.) includes general theory, general and quantitative methods, two-dimensional techniques and continuous flow methods. The major change from the first edition has been an expansion of the methods to include material published up through 1956 (almost a three-fold increase in references). In view of the rapid growth of these separation techniques in recent years, particularly in the organic and biochemical fields, this new edition serves as an up to date comprehensive manual of methods. As in the past, the authors give the reader the benefit of their judgment and experience by pointing out in some instances those procedures which are recommended. This book continues to be a valuable addition to any laboratory employing these paper chromatographic or electrophoretic methods. GEORGEH. MORRISON
to Electronic Absorption Spectroscopy in Organic Chemistry. A. E. GILLAMand E. S. STERN;with a foreword by E. R. H. JONES, F.R.S. Second Edition, Edward Amold(Publishers)
An Introduction
Ltd., London,
1958. pp. xi + 326. 50s.
THIS is not intended to be a text-book for the analyst, and half of its sixteen chapters are concerned with the relations between the structures and light absorption of organic molecules. It gives, however, spectra or spectral data in the ultraviolet and visible regions for some 800 compounds, which may well be of interest to the organic analyst. For the specialist within this field there is a chapter on the detection and identification of carotenoids, anthocyanins, dyes and industrial colours, blood pigments and a number of miscellaneous colourless, but ultraviolet absorbing, substances. Quantitative analysis is considered in two chapters which give examples of various techniques for determining single substances and mixtures, and also in a chapter on miscellaneous applications, where the determination of some physical constants is described. Differential methods are only mentioned. Where the analyst who uses ultraviolet and visible absorption spectra can well find the book useful is in the more general chapters where the theory and measurement of absorption spectra are clearly and concisely presented. Many such analysts should certainly study the sections on the reliability of photoelectric instruments and the accuracy of quantitative determinations. There are over 500 references to the literature, amplified by an appendix giving a bibliography of general and absorption spectroscopy. Other appendices give useful information on the absorption characteristics of common solvents and the influence of temperature on absorption measurements of organic compounds. The diagrams are clear and the book is well produced. DAVID W. WILSON 195