NEW BOOKS tioii of the well known Bloch equa tions is given at a later stage in Chap ter 11 along with other relatively ad vanced chapters on transition metal ions, line widths, etc. This derivation and several useful appendixes on spin angular momentum, etc., given at the end, are expected to provide a smooth sailing for the beginner; this approach avoids the cluttering otherwise caused by introducing these rather involved derivations and concepts in earlier sec tions of a text. Other useful features of the book include a set of problems and references to other books and se lected publications. The inclusion of a 20-page chapter on nuclear resonance in paramagnetic systems, the discussion on electron nuclear double resonance (ENDOR), the Overhauser effect, etc., clearly reflect the author's sincere desire to include well established ramifications of magnetic resonance, in a comprehen sive yet compact volume. Unfortunately, the section on nu clear dipole-dipole interactions, leading to broadline N.M.R. studies on solids, occupies only 11 pages, and gives some what peripheral applications concerning the structure of "an infusible precipi tate" obtained by adding mercuric chloride to aqueous ammonia. Further more, benzene is cited to illustrate mo lecular motions in "polycrystalline" benzene. These applications may sound uninspiring for the average chemist. Since the authors have requested suggestions (for future editions), this reviewer would like to point out the extensive applications of broadline N.M.R. to molecular motions in sand wich-type organometals like ferrocene [(C r ,H r ,) 2 Fe] and to different types of organic polymers. Inclusion of such examples would considerably enhance the quality of a text, which in summary, may be em phasized as an excellent contribution. Phosphorimetry. M. Zander, viii + 206 pages. Academic Press, Inc., Ill Fifth Ave., New York, Ν. Υ. 10003. 1968. $10 Reviewed by David M. Hercules, Department of Chemistry and Lab oratory for Nuclear Science, Massa chusetts Institute of Technology, Cam bridge, Mass. 02139 To date there has been no published comprehensive account of phospho rescence measurements as applied to analytical chemistry, and as such, the book, "Phosphorimetry," by Zander, fills a definite need in the literature. The manuscript was originally written in German and has been translated into English by T. II. Goodman of the Uni-
versity of Glasgow, Scotland. The translation is quite good and the pre sentation is very clear. This book should have wide appeal to analytical chemists, pharmacologists, biochemists, and clinical chemists, as people in these fields are becoming more con cerned with phosphorimetry as an ana lytical technique. The book is divided into four sections or chapters, each ap proximately 50 pages long; Chapter 1 deals with the theoretical and experi mental foundations of phosphorescence, Chapter 2 with phosphorescence prop erties of individual compounds, Chap ter 3 with experimental procedures, and Chapter 4 gives examples of applica tions of phosphorimetry. Chapter 1 provides a good, easily read and well-written introduction to triplet states and some of the phenom ena associated with them. This sec tion would be particularly good for the beginning graduate student or for the analytical chemist or biochemist requiring some knowledge of triplet states. Comprehension of the section does not require a detailed knowledge of quantum mechanics. Chapter 1 discusses a wide range of topics as sociated with triplet states of organic molecules such as spin orbit coupling, polarization, quantum yields, triplettriplet transitions, fluorescence life times, and delayed fluorescence. Per haps it would have been advisable to have a more detailed discussion of en ergy transfer as it relates to triplet states, but barring this, the topic cov erage in this section is quite com plete. Chapter 2 is mainly concerned with the phosphorescence of organic com pounds—particularly the phosphores cence of aromatic hydrocarbons and related compounds. Substituted aro matic compounds, quinones, and heterocycles are discussed, as well as ali phatic compounds such as polyacetylenes, alkaloids, drugs, and some biochemicals. Chapter 3 deals with experimental procedures and briefly discusses com ponents used in phosphorescence mea surements, as well as some discussion of commercial instrumentation. The discussion of solvents used for phos phorescence glasses is good and most welcome. The section on characteriza tion of pure substances by means of their phosphorescence properties con tains much information which will be useful for chemists wishing to apply phosphorimetry. The author also gives a fairly detailed discussion of the phos phorescence analysis of mixtures. In Chapter 4, the author describes selected examples of the applications of phosphorimetry to analytical chem istry, reflecting somewhat his own re-
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VOL. 40, NO. 12, OCTOBER 1968
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