ANALYSIS OF FOOD AND BEVERAGES Headspace Techniques Edited by GEORGE CHARALAMBOUS Proceedings of a symposium organized by the Flavor Subdivision of the Agricultural and Food Chemistry Division of the American Chemical Society at the 174th national meeting, Chicago, Aug. 27-Sept. 2, 1977. CONTENTS: S. G. Wyllie et al., Headspace Sampling: Use and Abuse. H. Maarse and J. Schaefer, Quantitative Headspace Analysis: Total and Specific Group Analysis. F. Z. Saleeb and T. W. Schenz, A Technique for the Determination of Volatile Organic Compounds under Equilibrium and Non-Equilibrium Conditions. A. L. Boyko et a/., Porous Polymer Trapping for GC/MS Analysis of Vegetable Flavors. D. A. Withycombe et al., Isolation of Trace Volatile Constituents of Hydrolyzed Vegetable Protein via Porous Polymer Headspace Entrainment. /. Klimes and D. Lamparsky, Headspace Techniques Utilized for the Detection of Volatile Flavor Compounds of the Vanilla Bean. 0. G. Vitzthum and P. Werkhoff,.Aroma Analysis of Coffee, Tea, and Cocoa by Headspace Techniques. E. D. Lund and H. L. Dinsmore, Determination of Citrus Volatiles by Headspace Analysis. J. T. Hoft et al., Flavor Profiling of Beer Using Statistical Treatments of GLC Headspace Data. A. C. Noble, Sensory and Instrumental Evaluation of Wine Aroma. H. Akiyama et al., Sake Flavor and Its Improvement Using Metabolic Mutants of Yeast. R. ter Heide et al., Concentration and Identification of Trace Constituents in Alcoholic Beverages. D. A. M. Mackay and M. M. Hussein, Headspace Techniques in Mouth Odor Analysis. J. A. Singleton and H. E. Pattee, Headspace Techniques Used in the Analysis of Volatile Components from Lipoxygenase Catalyzed Reactions. 7978, 416 pp., $21.001'£13.65 ISBN: 0-12-169050-4
GAS CHROMATOGRAPHY WITH GLASS CAPILLARY COLUMNS By WALTER JENNINGS CONTENTS: Introduction. The Glass Capillary Column. Column Coating. Inlet Systems. Column Installation. Measuring Column Efficiency. Treatment of Retention Data. Temperature Programming and Carrier Flow Considerations. Column Stability. Column Selection. Sample Preparation. Analysis of Materials of Restricted Volatility. Applications of Glass Capillary Gas Chromatography. Appendix 1. Nomenclature. Appendix II. Liquid Phases. Appendix III. Porous Polymer Data. Appendix IV. Silylation and Derivazation Reactions. 1978, 200 pp., $16.501£.11.70 ISBN: 0-12-384350-2
ph MEASUREMENTS By C. CLARK WESTCOTT pH Measurements provides a basic, practical source of information about the principles, equipment and technique of this operation. Based on the author's experience with pH measurement for over a decade, this simplified guide is geared to laboratory applications for problem solving, training personnel, and obtaining accurate results. Chapters cover the theory of pH, characteristics, care, and performance of pH equipment and standard solutions, the use of proper technique in difficult applications, and troubleshooting, with examples drawn from everyday laboratory and field experience. 1978, 192 pp., $16.00/£10.40 ISBN: 0-12-745150-1 Send payment with order and save postage plus 50C handling charge. Prices are subject to change without notice.
ACADEMIC PRESS, INC. A Subsidiary of Harcourt Brace Jovanovich, Publishers 111 FIFTH AVENUE, NEW YORK, N.Y. 10003 24-28 OVAL ROAD, LONDON NW1 7DX CIRCLE 4 ON READER SERVICE CARD
480 A · ANALYTICAL CHEMISTRY, VOL. 50, NO. 4, APRIL 1978
Books case, the portion of the book likely to be used to the greatest extent is P a r t II, which remains very clear and error free. Trace Analysis of Atmospheric Samples. Eikuo Oikawa. viii + 1 5 8 pages. Halsted Press, 605 Third Ave., New York, N.Y. 10016. 1977. $22.50 Reviewed by E. W. Bretthauer, U.S. Environmental Protection Agency, Environmental Monitoring and Support Laboratory, P.O. Box 15027, Las Vegas, Nev. 89114 This book is intended to describe the most recent methods for sample collection and analysis of metals in atmospheric particulates. T h e book was reviewed for use (1) as a reference book for the professional environmental analyst and (2) the student who desires a primer for background information. T h e sampling and the sample pretreatment sections meet the latter requirement b u t are far too brief and incomplete for a reference book, i.e., sample siting criteria are contained in one short paragraph without references. In practice, the professional environmental analyst would need much more information to adequately conduct atmospheric particulate sampling of metals. T h e analytical section was found inadequate for either purpose. T h e major deficiencies in the analytical section are as follows. 1. Much of the information is outof-date. For example, the described NASN method for emission spectroscopy analyses of air filters is approximately 10 years out-of-date. Many improvements have been made to the described NASN method and have been available in the literature for some time. 2. T h e author's greater familiarity with atomic absorption analysis appears to unfairly bias him against the other analytical techniques. For example, he states t h a t optical emission is an expensive analytical technique for single sample analysis. In reality, single sample analysis by optical emission spectroscopy may be less expensive than comparable analyses by atomic absorption, depending on the n u m b e r of elements analyzed in a sample. T h e author also states t h a t atomic absorption analysis always provides lower detection limits t h a n emission spectrometry with the exception of vanadium. Actually, the detection levels of the modern inductively coupled argon plasma optical emission spectrometer in most cases are equal to detection levels obtained by conventional atomic absorption. 3. Some of t h e information on ana-
