NEW BOOKS inorganic chemistry, and preparative and industrial uses. There are 11 chapters contributed by authors from several nations. Extensive references and many illustrations are included.
Gas Chromatography.
2nd éd. Â. I .
M. Keulemans. xxi + 234 pages. Reinhold Publishing Corp., 430 Park Ave., New York 22, Ν. Υ. 1959. $7.50. The first edition of this book ap peared in 1957. The new edition brings the book up to date in view of advances in practical details that have taken place since the original was published. Among the new advances that are dis cussed are the development of columns having an extremely large number of theoretical plates, the introduction of new and highly sensitive detection sys tems, the use of gas-solid chromatog raphy for special purposes, and the separation of isotopes. The author has also replaced some of his previous ap plications with others of more imme diate interest. The first appendix is rewritten, and the former second ap pendix has been omitted in favor of another one on elimination of noncondensable gases from commercial carbon dioxide. Also, a subject index has been added in this edition.
Gas Chromatography Applications Manual. Theron Johns. 71 pages. Beckman Instruments, Inc., Scien tific and Process Instruments Divi sion, Fullerton, Calif. 1959. $5. This workbook, a revision of an earlier edition, covers the basic theory of gas chromatography, proper instru ment design, column technology, and applications. One section is devoted to the application of chromatographic analysis to continuous process gas or liquid streams. The laboratory appli cation sections cover such subjects as qualitative and quantitative analysis and trace component analysis, with pro cedures and computations. The man ual has about 50 illustrations and a bibliography of more than 500 refer ences.
High-Resolution Nuclear Magnetic Resonance. J. A. Pople, W. G. Schneider, and H. J. Bernstein, xii + 501 pages. McGraw-Hill Book Co., 330 West 42nd St., New York 36, N . Y . 1959. $13.50. This book is designed for those who want a fairly full account of the princi-
The shell of the P-K Type (LV) Lab Blender can be charged from either side by the quick removal of either of two dust- and watertight covers.
pies underlying high-resolution Ν MR, the range of NMR application, and a survey of achievement to date. It in cludes high-resolution work on liquids and gases, but makes no attempt to cover broad-line NMR of solids. Di vided into two parts, the book first describes the basic principles of the sub ject and the nature of the apparatus used; then it surveys applications to chemical problems. In Part I, empha sis is placed on aspects likely to be im portant in chemical applications, such as spectral analysis and the interpreta tion of chemical shifts. The attempt was made in Part I I to include most of the high-resolution studies that had been published to the time of writing. Much of the experimental material de scribed is on the magnetic resonance of protons, the authors feeling that pro tons will continue to be the most im portant nuclei studied by this tech nique. There are three appendixes on nuclear properties, transitions due to random fields, and volume diamagnetic susceptibilities of some chemical com pounds. A list of general review arti cles, together with an extensive bibli ography of individual research contri butions, is given at the end of the book,
Lehrbuch der Analytischen und Praparativen Anorganischen Chemie. 3rd ed. Gerhart Jander and Hildegard Wendt. xix + 421 pages. S. Hirzel Verlag, Birkenwaldstrasse 185, Stuttgart N, Germany. 1959. D M 2 2 . - . In view of the increasing use of semimicro techniques, the authors felt that a complete reworking of this book was desirable. Consequently it is distin guished from previous editions largely with regard to classification and range of material. At the same time, the effort has been made to refrain from making it a specialized work and to re tain the original objective of facilitat ing an introduction to inorganic chem istry and its problems. The recom mended semimicroprocedures differ from customary macromethods only in nonessentials. Differences which do occur are generally concerned with technical—use of centrifuge instead of filtration, more frequent use of the microscope, and so on. In broad out line, the book is divided into five parts. These include an introduction and sec tions on theoretical foundations, general fundamentals of work methods, analy ses, and preparations. Diagrams are given where necessary, and there are 24 photographs of crystals plus reproduc tions in color of the spectra of several of the elements.
with
P-K's NEW (LV) LAB
ΘΜΪ13 YOU GET THESE 3 DIFFERENT MIXING ACTIONS... LIQUID-SOLIDS TYPE - To disperse and blend, uniformly, liquids of any viscosity with dry solids, just insert the wire cage liquidfeed bar assembly. Handles liquids from mi nute quantities up to 40% of total weight. Liquid is introduced through hollow shaft of bar. Even critical formulations blended in 5 to 10 minutes.
INTENSIFIER TYPE — To get intensive mix
ing of hard-to-blend dry solids, or to break up agglomerates, use wire cage bar assembly. Average blending time for dry formulationsi 3 to 5 minutes.
FOR GENTLE PRECISION BLENDING — Simply remove wire cage bar. Unique blend ing action will not cause attrition or break down even the most delicate crystals. Average blending time: 3 to 5 minutes.
This new P-K Type (LV) Lab Blender owes its versatility to the design of the removable, spring-loaded liquid-feed bar assembly. Liquids and solids are prevented from entering the bearing housings by an exclusive, patented seal. Standard (LV) Lab Blenders are available in 8 and 16 quart capacities, in transparent Lucite or stainless steel. Interior of shell and stain less steel bar assembly can be cleaned, clin ically, in minutes. Operates on 115 ν AC. Units can be shipped from stock. For complete technical information and prices, write to PK's Chemical and Process Equip ment Division, 1002 Hanson Street, East Stroudsburg, Pennsylvania. i6Q
Patterson-Kelley All P-K Twin-Shell Blenders are patented and the name registered Circle No. 109 an Readers' Service Card VOL.
32, NO. 2, FEBRUARY 1960
·
57 A
