The aim of this book is to give an account of the principal radiochemical methods used in chemical analysis. It is assumed that the reader already has some background knowledge of radioactivity, available from several general textbooks. For this reason some subjects, e. g. the fundamentals of radio activity, the properties of radiation, statistics of counting procedures, the precautions needed in working with radioactive materials, which could have occupied half the text, are not considered in detail. The different aspects of radiochemical analysis have been covered by specialized books and reviews, e. g. on activation analysis, gamma spectrometry, radiometric titrations. A good deal of information is in the form of reports of meetings and symposia and liquid scintillation counting, for instance, has been mainly covered in this way. There are also a large number of journals. It is therefore hoped that this book will help fill the gap between the introductory texts and the specialized sources, many of which are referred to in the chapter references. The ftrst three chapters in the present volume deal with the methods of measurement of radioactive nuclides. Chapter I gives a general account of detection and measurement techniques. The next two chapters are devoted to two specialized techniques: gamma-ray spectrometry and liquid scintilla tion counting.

This book presents the analytical uses of radioactive isotopes within the context of radiochemistry as a whole. It is designed for scientists with relatively little background knowledge of the subject. Thus the initial emphasis is on developing the basic concepts of radioactive decay, particularly as they affect the potential usage of radioisotopes.

From nuclear dating methods to nucleosynthesis in stars. it's all here. The first practical, comprehensive guide to the science of radiochemistry. Radiochemistry and Nuclear Methods of Analysis is the first thorough and up-to-date look for the nonspecialist at the fundamentals of radiochemistry as well as the full range of advances currently made possible by the applications of radioactivity. Without an emphasis on high-level mathematics or abstruse theoretical physics, the book provides a clear, fundamentals-first look at radioactivity, the principles of radioactive decay, and nuclear reactions, as well as: * Modern radiochemical instrumentation * Nuclear dating methods * Methods for the production of radionuclides * The use of tracers and nuclear methods of analysis * The origin of the chemical elements * The biological effects of radiation The book's user-friendly instructional format, designed for both beginning and advanced students, includes numerous end-of-chapter problems ranging from the simple to complex which familiarize the reader with equations and concepts in the text. References to recent monographs, available in most college and university libraries, provide direction to more specialized literature. Invaluable to both students and professionals in search of a practical grasp of the subject, Radiochemistry and Nuclear Methods of Analysis is a clear introduction to radioactivity and radionuclear chemistry's principles, methods, and applications.

A Mossbauer spectrometer which uses optical interferometry in the Doppler drive, and the mechanical design for the electromechanical drive described in last years report are presented. A description of chemical shift of iron compounds is given. The use of a correction factor for certain source detector geometries are described for Mossbauer spectroscopy. A new source of Sn(119m) in palladium which produces a very narrow line width is also described. For the first time a trace element has been certified in a Standard Reference Material with the assistance of the activation analysis technique. Flux measurements for the NRL reactor are given. A number of special analyses for various NBS projects by activation analysis are described (e.g. argon in silicon, chlorine in polystyrene, hafnium in zirconium). A beta-gamma sum coincidence gamma ray spectrometer is described. A constant potential electrochemical method of analysis using radioisotopic tracers is presented which has potential high sensitivity. A method of using radioisotopic tracers in heterogeneous equilibrium between an aqueous medium of cobalt to be analyzed and manganese dioxide impregnated filter paper is described. Some results on the precision of the substoichiometric radioisotope dilution analysis of silver and iron are presented.