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BOOK
REVIEWS
gel, suitable for large-scale production of fractions. Chapter 20 by H. V. Drushel describes another application of HPLC techniques using CL-Porasil columns with backtlush capability for the determination of saturates and aromatics in high-boiling fractions. The use of differential refractive index and moving-wire detectors were compared for these particular systems. Variables affecting their response were studied and the results were compared with compositions determined by the large-scale clay-silica gel separation technique. The closing paper by R. B. Callen C/ al. reviews the technique of gradient elution chromatography used to separate SRC produced from three different coal sources into welldefined fractions. These fractions were further examined by IR spectrometry to determine the nature of the functional groups, and by a combination of C-13 and H-NMR techniques to gain some insight into the aromaticities and structural features of the various fractions. Data from these SRCs are compared and contrasted with comparable data from a petroleum vacuum resid. GE.~RCL
W. C. HUNG,
Wootison-Trnrnr Lohorrrroric.t Inc. Nmtionrrl Hc~crltll Lahorrrtorirs Inc.. Mfmplli.\ , Tennrsscr 3x101
Ion-Selective Electrodes in Organic Elemental and Functional A Review: (1975 to 1978). Suppl. 1. By WALTER SELIG. Lawrrrxr orcrfory. Unil,crsity of Cnl~fbrnicr, Li\~rrmorr. 1978. iv + 57 pp.
Group Analysis: Li\,rrmorr Lah-
Like the first part, this is an extremely valuable piece of work and is a “must” for those involved in ion-selective electrode work. The survey is complete from Chemical Abstracts, Vol. 83 (1975) through Vol. 88 (1978) and covers the subjects Elemental Analysis (Anions and Cations) and Functional Group Analysis (Divalent Sulfur Functions, Hydroxy Compounds, Carboxylic Acids, Nitro Compounds, Sulfonic Acids and Sulfonamides, Surfactants, Basic Nitrogen Compounds, Reducing Substances, and Miscellaneous Information).
Affinity Chromatography. Edited by 0. HOFFMAN-OSTENHOF, M. BREITENBACH, F. KOLLER, D. KRAF-I, AND 0. SCHEINER. Pergamon Press. New York, 1978. xvi + 374 pp., $40.00. Affinity chromatography involves the use of a biospecitic ligand coupled to an insoluble support, to achieve the separation of a specific compound from a mixture. This is a relatively new field (under this name) and one that is rapidly growing. This book consists of articles originally presented at an International Symposium held at Vienna, Austria in September 1977, which was the first international symposium devoted to affinity chromatography. A total of 164 scientists from many countries participated in this symposium. The book includes 55 articles, grouped into seven parts, a list of participants, introductory remarks, and a subject index. The first part was on gel matrices, coupling methods, and charge transfer chromatography. Part II was concerned with the use of affinity chromatography for enzyme separation. Hydrophobic interaction chromatography was discussed in part III. The use of affinity chromatography for the separation of antibodies and antigens was discussed in part IV. Part V discussed matrix-bound Iectins and affinity chromatogra-