Here, experts contribute general examination techniques followed by more specific application models. Beginning with reviews of the principles of chemistry, the chapters also serve as introductions to the tasks and tools of examiners, and illustrate clandestine laboratory operations.

The state of the art of the bioengineering aspects of the morphology of microorganisms and their relationship to process performance are described in this volume. Materials and methods of the digital image analysis and mathematical modeling of hyphal elongation, branching and pellet formation as well as their application to various fungi and actinomycetes during the production of antibiotics and enzymes are presented.

Nano-inspired Biosensors for Protein Assay with Clinical Applications introduces the latest developments in nano-inspired biosensing, helping readers understand both the fundamentals and frontiers in this rapidly advancing field. In recent decades, there has been increased interest in nano-inspired biosensors for clinical application. Proteins, e.g. antigen-antibody, tumor markers and enzymes are the most important target in disease diagnosis, and a variety of biosensing techniques and strategies have been developed for protein assay. This book brings together all the current literature on the most recent advances of protein analysis and new methodologies in designing new kinds of biosensors for clinical diagnostic use.

Table of Contents Reporter cells: - Yeast Based Sensors by Mifumi Shimomura-Shimizu and Isao Karube - Mammalian Cell-Based Sensor Systems by Pratik Banerjee, Briana Franz, and Arun K. Bhunia - Fluorescent and Bioluminescent Cell-Based Sensors: Strategies for Their Preservation by Amol Date, Patrizia Pasini, and Sylvia Daunert - Electrochemical Cell-Based Sensors by Eliora Z. Ron and Judith Rishpon - Microbial Cell Arrays by Tal Elad, Jin Hyung Lee, Man Bock Gu, and Shimshon Belkin Devices: - Surface Functionalization for Protein and Cell Patterning by Pascal Colpo , Ana Ruiz , Laura Ceriotti , and Francois Rossi - Fiber-Optic Based Cell Sensors by Evgeni Eltzov and Robert S. Marks - Electronic Interfacing with Living Cells by James T. Fleming - On-Chip Detection of Cellular Activity by R. Almog , R. Daniel , S. Vernick , A. Ron , H. Ben-Yoav, and Y. Shacham-Diamand

The first chapter in the present volume takes up a well-known theme in modern context: the ideas concerning non-Stokesian mechanisms of ion transport. We are happy that one of the great pioneers of modern electrochemistry, T. Erdey-Gniz, in collaboration with S. Lengyel, has consented to write this article for us. Along with it is a solution-oriented article in spectroscopic vein, namely, that by A. Covington and K. E. Newman on the analysis of solution constituents by means of nuclear magnetic resonance studies. Progress in the electrochemistry of the double layer has perked up, and the advances have been triggered from critical experiments, one showing that fluoride ions are specifically adsorbed, and the other showing that the position of maximum disorder of the water molecules occurs at a charge opposite to that needed for interpreta tions of capacitance humps in terms of water molecules. M. A. Habib, who has contributed to the theory in this area, reviews the con sequences of these changes in information. The rise in the price of energy toward a situation in which sources other than the fossil fuels become economical implies much for the fuel cell and electrocatalysis. It has long been known that electrocatalysis in real situations was more than a consideration of exchange current densities, and a gap remains in the formulation of the theory of supports for such catalysts, although Boudart has stressed so much the vital nature of them. P. Stonehart and K. A. Kinoshita describe progress in this area.

After the proton and carbon, nitrogen is, with oxygen, the most impor tant atom in organic and especially bioorganic molecules. However, the development of nitrogen spectroscopy is indeed very recent. This is due to the fact that nitrogen-14, which is the naturally abundant iso tope, suffers, for structural studies, from the disadvantages inherent in nuclei with a quadrupolar moment (Table 1.1). Actually, indirect 15N measurements were reported in the early days of double resonance spectroscopy and the first direct detection of 15N resonance signals at the natural abundance level was realized in 1964 (R 17) at 4.33 MHz 1 (~ 1T) using a 15 mm o.d. cell in the field sweep mode (~ 0.16 min- ). Signal-to-noise ratios only of 3-4 were obtained for neat liquids and this low sensitivity of the 15N resonance still remains the main dis advantage for 15 spectroscopy (Table 1.1). However, nitrogen-15 has, N probably more than any other nucleus, benefited from the advances of NMR technology, i.e. Fourier transformation, multinuclear facilities, wide-bore super conducting solenoids, and, with the new generation of spectrometers, 15N-NMR is entering the field of routine investigation. Nevertheless, in spite of these spectacular improvements, obtaining 15N spectra of diluted species or large biochemical molecules is often not very easy and a good knowledge of the relaxation properties pecu liar to 15N may be necessary in order to adjust the pulse sequences and the decoupler duty cycle correctly (Section 2).

This volume represents the proceedings of the second international meeting on chiral separations held at the University of Surrey between the 12th and 15th of September 1989. Like the preceding meeting, it was jointly organised by the Chromatographic Society and the Robens Institute of the University of Surrey in response to the continued interest in this area of separation science. Of particular interest to the organisers was the very clear change in the nature of the delegates attending this second symposium as compared with the first. At the previous meeting the majority of the delegates were composed of chromatographers with problems in the area of chiral separations who were keen to learn as much as possible about these techniques from the handful of recognised experts in this area. In this second symposium the divide between expert and novice was much less apparent, with the latter providing many interesting and useful contributions to the scientific programme in termt; of both oral and poster presentations.

This volume contains five chapters covering four topics of current research interest: splitting of water, lithium batteries, intercalation, and fundamental aspects of electrode processes. Two chapters are devoted to splitting of water. The first chapter, by Gutmann and Murphy, presents a comprehensive review of the classical methods of splitting water by electrolysis and also presents some novel techniques for splitting water. Chapter 2, by Gratzel, surveys the current research being done on water splitting using visible light. Two chapters are included that deal with the timely topics of lithium batteries and intercalation. The first, Chapter 3 by Marincic, presents a practical guide to the recent development of lithium batteries, while the second, Chapter 4 by McKinnon and Haering, presents and discusses various theoretical approaches to inter calation. The last chapter in the book, Chapter 5 by Khan, presents a survey of many of the fundamental concepts and misconceptions of electrode kinetics as applied to semiconductors in particular."

Azo dyes play an important role as coloring agents in the textile, food, and pharmaceutical industry. Due to the toxicity, mutagenicity and carcinogenicity of azo dyes and their breakdown products, their removal from industrial wastewaters has been an urgent challenge. Promising and cost-effective methods are based on their biodegradation, which is treated in this volume. The topics presented by experts in the field include: the classification of azo dyes; toxicity caused by azo dyes; aerobic and anaerobic azo dye biodegradation mechanisms; the role of bacteria, fungi, algae and their enzymes in biodegradation; the impact of redox mediators on azo dye reduction; the integration of biological with physical and chemical processes; the biotransformation of aromatic amines; reactor modelling for azo dye conversion; the biodegradation of azo dyes by immobilized bacteria and fungi; and factors affecting the complete mineralization of azo dyes.

The 1989 International Conference on Nuclear Analytical Methods in theUfe Scienceswas a continuationofa seriesofconfer- encesheldbytheInternationalAtomicEnergyAgency. Thefirsttook placeinAmsterdamin 1967,thesecondin Bledin 1972,andthethird inViennain 1978. Theaimoftheseconferenceshasbeentostimulate discussions between scientists who are working as biologists, envi- ronmentalists, and physicians, and those who are working on the advancementofnuclear analytical techniques. The 1989 Conference was held at the National Institute of Standards and Technology (NIST, formerly the National Bureau of Standards)inGaithersburg,Maryland. ThefocalpointoftheConfer- ence was the presentation of results from multidisciplinary research involvingnuclear analytical techniques and their applications to the life sciences. Wehave obtained contributions from life sciencefields thatrelatethenuclear analyticalmethods to abroad scopeofbiologi- cal, medical,and environmental applications. Deliberately,our defi- nition of nuclear analytical techniques was made flexible. Methods and applications were treated in a more comprehensive way than thoseatestablished meetings. Particularconsideration was given to contributions from developing countries. We are indebted to many people and organizations for their assistancein making this symposium possible. TheConference was organizedbytheUSDepartmentofCommerce'sNISTincooperation with the International Atomic Energy Agency, by supplying both financial support and scientific expertise. The meeting was cospon- soredbytheAmericanNuclearSociety,theUSDepartmentofEnergy, andtheFoodandDrugAdministration,whoprovidedbothorganiza- tional and financial support. We hope that the results of this Conference, presented here, will stimulatethe developmentofnew collaborativeresearch efforts betweenthe life sciencesand analytical fields. Acontinuationofthis series ofconferences willbe a measureofthe successofthis interdis- ciplinary collaboration.

Chemistry of Plant Protection, Volume 7, provides critical review articles on new aspects of herbicide resis- tance, serving the needs of research scientists, pesticide manufacturers, government regulators, agricultural practitioners.

In Number 20 of Modern Aspects of Electrochemistry, we present chapters whose organization is typical for the series: They start with the most fundamental aspects and then work to the more complex. Thus, Jerry Goodisman gives us an interesting contribution on a subject in which he is one of the pioneers, the electron overlap contribution to the double layer potential difference. Closely related to this theme, but not always imbued with knowledge ofit, is the electron transfertheory, treated in this volume by the experienced author A. M. Kuznetsov ofthe Frumkin Institute. H. P. Agarwal is a well-known figure in the field of faradaic rectification, which he originated, and he now teils us about the more recent thinking in the field. On the other hand, Hector D. Abruna comes relatively new to us, and his field, that of X-ray interactions with electrodes, is new, too, but probably augers the trend for the future. The photoelectrochemical reduction of CO2 , described here by Isao Taniguchi from Kumamoto University, is a subject which will have much practical importance as the greenhouse effect continues. Finally, alu mi nu m in aqueous solutions and the physics of its anodic oxide is a subject which seems ever with us, and is described in its latest guise by Aleksandar Despie and Vitaly P. Parkhutik.

The present work is an introductory text in statistics, addressed to researchers and students in the field of material science. It aims to give the readers basic knowledge on how statistical reasoning is exploitable in this field, improving their knowledge of statistical tools and helping them to carry out statistical analyses and to interpret the results. It also focuses on establishing a consistent multivariate workflow starting from a correct design of experiment followed by a multivariate analysis process.

The selected spectra presented in this volume are a testimony to the diversity of mineral carbonates. Their compositional variety embraces many of the chemical elements and is increased by the frequent presence of solid solution between members. They occur in all the broad categories of rock types: igneous, metamorphic, metasomatic and sedimentary; and they are often associated with important ores and rare element deposits. Carbonates are not only of significance in the geological domain, but also in industry and materials science. Accurate identification of the compounds is, therefore, vital for a proper understanding of any carbonate bearing system. The development of Fourier transform infrared spectrometry has been for some years at the stage where the acquisition of spectra is relatively simple, rapid and with good resolution. For identifi- tion, the method is inexpensive and can provide additional information on the nature of the chemical bonding. It is particularly suited to carbonates because of its ability to discriminate clearly between the different members. It is obvious that to be able to produce a large set of definitive spectra, a source of we- characterized minerals is required, but the location of such a source is not necessarily so obvious. Our two museums - The Natural History Museum in London and the National Museums of Scotland in Edinburgh - have joined forces to provide such a source, using their renowned mineral collections and authenticating each mineral by modern advanced methods of analysis and identifi- tion.

Lanthanides have fascinated scientists for more than two centuries now, and since efficient separation techniques were established roughly 50 years ago, they have increasingly found their way into industrial exploitation and our everyday lives. Numerous applications are based on their unique luminescent properties, which are highlighted in this volume. It presents established knowledge about the photophysical basics, relevant lanthanide probes or materials, and describes instrumentation-related aspects including chemical and physical sensors. The uses of lanthanides in bioanalysis and medicine are outlined, such as assays for in vitro diagnostics and research. All chapters were compiled by renowned scientists with a broad audience in mind, providing both beginners in the field and advanced researchers with comprehensive information on on the given subject.

"

The MESA Research Institute of the University of Twente was created in 1990 through the joining of the research unit Sensors and Actuators with the department of Microelectronics. The multidisciplinary institute, with participation from the faculties of Electrical Engineering, Applied Physics and Chemical Technology, was recently recognized as a Centre of Excellence by the Dutch Science Foundation. It is fully 2 equipped with modem Clean Room facilities (1000 m ) and a number of research laboratories. The objective of MESA is to perform research and development of systems in modem information technology, and on the units on which they are based: the microstructures that process and transduce signals. The institute gradually expanded during the past few years till some 125 persons in 1994. Given the wide variety of research subjects within MESA, it has been decided to start a MESA Monographs series, appearing on a more or less regular, yearly basis. In this way, after some time a good overview of research topics under investigation at MESA will be obtained. The first volume of this series coincides with the Proceedings of pTAS '94, the first Workshop on Micro Total Analysis Systems, held on November 21-22 at the University of Twente in Enschede, The Netherlands. IlTAS has recently been defined as the first strategic research orientation of MESA, aiming at synergetic collaboration between the different disciplines present in MESA.

This text is about electrical and instrumentation safety for chemical proc esses. It covers a wide area of electrical and electronic phenomena and how they have and can significantly affect the safety of chemical processes. The importance of the subject is well known to anyone involved in the operation of chemical processes. Lightning strikes can explode storage tanks, shut down electrical power systems, and shut down or damage computer and instrument systems. Static electricity can ignite flammable materials and damage sensitive elec tronic process control equipment. Electrical power system failures or inter ruptions can produce unsafe process conditions. Chemical processes use flammable and combustible vapors, gases, or dusts that can be exploded by electrical equipment and wiring. Even low-energy equipment like flashlights can ignite a flammable vapor. Interlock and equipment protection systems can cause safety problems. How important is electrical and process control safety? A survey on "How Safe is Your Plant?," in the April 1988 issue of Chemical Engineer ing magazine, provided some answers. Among the results of this survey of chemical processes, it was found that over 800 respondents believed instru mentation and controls, shutdown systems, equipment interlocks, and other protection systems to be the least safe aspect of chemical industries. The survey also indicated that complying with OSHA and other regula tions, process control software security, inspections, audits, and safety training are important safety issues."

Biochemistry of Scandium and Yttrium gathers together existing knowledge about scandium and yttrium from a wide variety of disciplines. Part 2 addresses the biochemical aspects of these two elements, and the various medical and environmental applications. (Part 1 presents a comparative study of the physical and chemical properties of scandium and yttrium, looking at both their similarities and their differences.) While these elements are relatively rare in nature, these books will show that they have unusual physical and chemical properties, and a disproportionate number of important applications. Improved analytical techniques have revealed that scandium and yttrium are present throughout living matter, even though only a relatively limited number of species have been analyzed so far. This fact of course has far-ranging implications for biological and environmental concerns. The major impacts of scandium and yttrium in science, technology, and medicine will be of interest to a wide variety of researchers, including geochemists, inorganic and organic chemists, clinical biochemists, and those specializing in environmental protection.

The field of gas phase inorganic ion chemistry is relatively new; the early studies date back approximately twenty years, but there has been intense interest and development in the field in the last ten years. As with much of modern chemistry, the growth in gas phase inorganic ion chemistry can be traced to the development of instrumentation and new experimental methods. Studies in this area require sophisticated instruments and sample introduc tion/ ionization methods, and often these processes are complicated by the need for state-selecting (or collisionally stabilizing) the reactive species in order to assign the chemistry unequivocally. At the present level of experimental development, a wide range of experiments on diverse ionic systems are possible and many detailed aspects of the chemistry can be studied. Gas Phase Inorganic Chemistry focuses on the reactions of metal ions and metal clusters, and on the study of these species using the available modern spectroscopic methods. Three of the twelve chapters cover the chemistry of ionic monometal transition metal ions and the chemistry of these species with small diatomics and model organics. Two of the chapters focus on the studies of the chemical and physical properties of (primarily) transition metal clusters, and these chapters review experimental methods and capabilities. Two chapters also deal with the chemistry of transition metal carbonyl clusters, and these chapters address issues important to cluster growth and activation as well as the characterization of such species."

Since its introduction into the armoury of the analytical chemist approximately two decades ago the technique of gas chroma tography has found very extensive applications in the analysis of most types of organic compounds. One of the few remaining limitations of the technique when applied to such compounds, namely the analysis of very highly boiling and or thermally unstable substances, has been overcome in many instances by the introduction of techniques such as silation for the conversion of sample components to lower boiling or more stable substances which can be gas chromatographed at reasonably low temperatures. All of this has been extensively dealt with in many books published during recent years dealing with the theory and practice of applying gas chromatography to the analysis and preparative separation of organic compounds. In parallel with these developments there has occurred, particu larly over the past decade, a growing interest in the application of gas chromatography to the analysis of organometallic compounds. Indeed, for many types of organometallic compounds, gas chromatography is the analytical method of choice particularly, as so often happens, when the sample is a mixture. To the author's knowledge no complete review exists of the published work in this very interesting new field; a situation it is hoped the present volume will rectify.

This volume contains the proceedings of the NATO-Advanced Research Workshop (ARW) "Manipulation of atoms under high fields and temperatures: Applications," sponsored by the NATO Scientific Affairs Division, Special Programme on Nanoscale Science. This ARW took place in Summer '92, in the pleasant surroundings of the Hotel des Thermes at Charbonnieres les Bains -Lyon, France. Gathering some fifty experts from different fields, the ARW provided an opportunity to review the basic principles and to highlight the progress made during the last few years on the nanosources and the interactions between atomic-scale probes and samples. The motivation is to use the novel properties attached to the atomic dimensions to develop nanoscale technologies. The perception of the atomic-scale world has greatly changed since the discovery and development, in the early 80's, of Scanning Tunneling Microscopy (STM) by Binnig and Rohrer. Beyond the observation of individual atoms, which is now routine, the concept of playing with atoms has become commonplace. This has lead to the fashioning of tools at the atomic scale, to the deposition, the displacement and the creation of atomic structures and also to the knowledge of interactions and contacts between atoms. Nanotips ending with a single atom are sources of ultra-fine charged beams. They can be unique tools for high resolution observations, for micro fabrications by micro-machining and deposition at a scale not previously attainable, with a working distance less stringent than with STM devices."

xii a second edition might be in order, and readily agreed. Although the basic principles remain the same, discussions with analysts, laboratory supervisors, and managers indicated many areas where improve ments could be made. For example, new chapters have been added on sampling and quality assurance; laboratory facilities and quality assurance; and auditing for quality assurance. Very little of the first edition has been discarded, but many topics have been expanded considerably. The chapter on computers has been completely rewritten in view of the rapid changes in that field. The chapter in the first edition on planning and organizing for quality assurance has been split into two chapters, one on planning for quality assurance and the other on organizing and establishing a quality assurance program, and new material on mandated quality assurance programs has been combined with the material on laboratory accreditation. Numerous examples, especially those involving mathematical calculations, have been added at the suggestion of some readers. In short, this edition is very nearly a new book, and I can only hope it is as well received as the first edition. CHAPTER 1 Qual ity, Qual ity Control, and Quality Assurance One of the strongest trends in modem society is the continuing ev olution from a manufacturing to a service-oriented economy."

The analysis of surfactants presents many problems to the analyst. This book has been written by an experienced team of surfactant analysts, to give practical help in this difficult field. Readers will find the accessible text and clear description of methods, along with extensive references, an invaluable aid in their work.

RF Probeheads 1. J. Link, Faellanden, Switzerland The Design of Resonator Probes with Homogeneous Radiofrequency Fields 2. M. Schnall, Philadelphia, PA/USA Probes Tuned to Multiple Frequencies for In-Vivo NMR RF Pulses 3. P.C.M. van Zijl, Rockville, MD/USA; C.T.W. Moonen, Bethesda, MD/USA Solvent Suppression Strategies for In Vivo Magnetic Resonance Spectroscopy 4. M. Garwood, K. Ugurbil, Minneapolis, MN/USA B1 Insensitive Adiabatic RF Pulses 5. P.G. Morris, Nottingham, UK Frequency Selective Excitation Using Phase-Compensated RF Pulses in One andTwo Dimensions 6. S. Mueller, Basel, Switzerland RF Pulses for MultipleFrequency Excitation: Theory and Application Spectrum Analysis 7. R. de Beer, D. van Ormondt, Delft, The Nethelands Analysis of NMR Data Using Time Domain Fitting Procedures 8. E.B. Cady, London, UK Determination of Absolute Concentrations of Metabolites from NMR Spectra