Capillary Electrophoresis.

Capillary Electrophoresis.

330 Modern Radio Science. J. Bach Andersen (Ed.). Oxford University Press, Oxford, 1990, ISBN o-19-856350-7, 210 pp., 223.50. This book presents ten ...

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Modern Radio Science. J. Bach Andersen (Ed.). Oxford University Press, Oxford, 1990, ISBN o-19-856350-7, 210 pp., 223.50. This book presents ten tutorial lectures of nine commissions of the International Union of Radio Sciences (URS), covering topics from electromagnetic field effects on biological systems to the use of microwaves for atmospherics and radio astronomy. However, of considerable interest for bioelectrochemists are mainly (a) Electromagnetic quantities, units and standards in a changing SI (B. Kibble, Natl. Physical Laboratory, Teddington, UK). Here precise determinations are described for Ohm, Volt, h/e* and compared with one another. Since 1 January 1990 the conventional values are fixed: Josephson const :

K, = 483 597.9 GHz/V, h/e2 = 25 812.807fl.

(b) Electromagnetic fields and the essence of living systems (Ross Adey, Loma Linda, USA). This comprehensive review covers: responses of organisms to ELF fields (< 100 Hz); sensitivities to ELF modulated radiofrequency fields; role of geomagnetic and static magnetic fields; the effect of calcium and the amplification of initial signals; inward signalling and receptor proteins; the transmembrane voltage; models. (c) New bio-information from ultraweak photon emission in life and biological activities: biophoton (H. Inaba, Sendai, Japan). Contrary to weak ELF irradiation (compare with (b)), ultraweak photon emissions from the mitosis of soybean and simultaneous bioelectrical activities are shown reflecting underlying physiological states (28°C). Surprising are short potential spikes recorded in the order of 50 mV! This contribution is an important example for the combination of photobiological and bioelectrochemical measurements, started in 1988. Valuable contributions are collected from quite different disciplines, but it seems that each reader has only a benefit from two or three articles. H. BERG

Jena

Capillary Electrophoresis. Principles, practice and application. S.F.Y. Li, Elsevier Science Publishers, Amsterdam, 1992, ISBN O-444-89433-0, xxvi + 586 pp., US$225.50. The present monograph is devoted to a capillary electrophoresis (CE) - a modern analytical technique which permits one to accomplish rapid and efficient electrophoretic separation of components in small sample volumes. This technique

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provides efficiencies up to two orders of magnitude greater than high-performance liquid chromatography and can be used in the separation of proteins and peptides, tryptic mapping, DNA sequencing, serum analysis, analysis of neurotransmitters in single cells and the determination of organic and inorganic ions. The book is in a series of Journal of Chromatography Library, volume 52 and includes all aspects of CE, from principles and technological aspects to the most important application. Chapter 1 covers the principles of various modes of operation of the technique and comprises comparison with other separation techniques. In Chapter 2, sample injection methods are discussed. In Chapter 3, optical, thermo-optical, electrochemical, radioisotope and mass spectrometric detection techniques are analyzed rather extensively. Chapter 4 provides a detailed treatment of contemporary uncoated and coated column technology for CE. In Chapter 5, a discussion is given on the different types of electrolyte systems, including very specific details such as the biological and chiral sufarctants, utilized to obtain unique mechanisms of interaction and separation possibilities. In Chapter 6, special instrument features and separation methodologies, including field effect electro-osmosis, capillary isoelectric focusing, capillary isotachophoresis, hyphenated and other techniques, not found in routine CE operations, are discussed. In Chapter 7, selected applications of CE to amino acids, peptides, proteins, nucleic acids, pharmaceuticals and drugs, food, cells, virus, bacteria, body fluids, organic and inorganic compounds separation - in all important areas of current interest are described. Finally, in Chapter 8, the latest advances in CE and its prospect for growth are considered. This book is extensively illustrated with 457 figures and 28 tables. It contains a subject index and about one thousand references, largely on contemporary literature. To our knowledge this book is the first comprehensive review of CE covering historical background, current state of development and future potential. This book can be used as a reference textbook for advanced undergraduate and graduate courses in many disciplines including analytical chemistry, analytical biochemistry, environmental science, pharmaceutical analysis and biotechnology. The modular fashion of this book is very helpful when selecting a topic to study. This book can be recommended also as a self-study text for experienced analysts, instrument manufacturers and researchers with a basic knowledge of chromatography separation, electronics, electrochemistry and optical application. This book is available from Elsevier Science Publishing, Co. Inc., P.O. Box 1991, 1000 BZ Amsterdam, the Netherlands or Elsevier Science Publishing, Co. Inc., Box 882, Madison Square Station, New York, NY 10159, USA. L. KULYS

Vilnius