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The report describes the research activities and scientific programs of the Microchemical Analysis Section of the Analytical Chemistry Division of the NBS Institute for Materials Research.General activities are reported in the areas of gas analysis, polarography, potentiometry, coulometry, chemical microscopy, and classical microchemical analysis. Research accomplishments described in some detail include the following:high pressure mass spectrometry; high precision differential polarography; an improved coulometric technique for titration of halides; developments in micro null-point potentiometry; techniques for the accurate weighing of small liquid samples.A number of microchemical procedures which have been developed for the analysis of a variety of materials are also included.(Author).
The report describes the research activities and scientific programs of the Microchemical Analysis Section of the Analytical Chemistry Division of the NBS Institute for Materials Research during the period July 1968 to June 1969. General activities are reported in the areas of gas analysis, polarography, potentiometry, coulometry, chemical microscopy, and classical microchemical analysis. Research activities described in some detail include: gravimetric preparation of gas analysis standards; polarographic determination of trace elements in glass; fabrication and performance of a microfluorine electrode; elucidation of the boric acid-borate-mannitol system; investigation of the relation between the equilibrium point and inflection point in acidimetric titrimetry; coulometric determination of trace quantities of chromium; and determiniation of trace elements by nuclear track measurements. A number of procedures which have been developed for the analysis of a variety of materials, utilizing the techniques mentioned above, are also included. (Author).
General activities are reported in the areas of gas analysis, polarography, potentiometry, coulometry, chemical microscopy, and classical microchemical analysis.Research activities described in some detail include:determination of trace amounts of oxygen in gases, development of a coulometric method for precise analysis of boric acid, improvements in microdetermination of silver and fluorine by null-point potentiometry, the electrochemical generation of fluoride ion, preparation of resin-bead particle standards, and determination of trace elements by the nuclear track technique. A number of microchemical procedures which have been developed for the analysis of a variety of materials are also included.(Author).
Quantitative Organic Microanalysis, Second Edition presents the recommendations of the American Chemical Society group for specification and methods of organic microanalysis. This book is organized into 23 chapters, and starts with discussions on test samples, blank tests, second type of efficient vibration-absorbing balance table, and microchemical balances. Other general topics covered include the Kjeldahl procedures to determine nitrogen compounds; oxygen flask combustions; determination of fluorine; and microhydrogenation. The final chapters present the modification of the procedure for the determination of oxygen using gravimetry. This book will be of great value to microanalysts, researchers, and college students who wants to expand their understanding in organic microanalysis.
Microchemical Analysis of Nervous Tissue focuses on the use of microbiochemical methods in the analysis of nervous tissue, with emphasis on those related to the study of amines, amino acids, phospholipids, and proteins. Special attention is paid to the choice of biological material and the various procedures used for the isolation by dissection of defined components of the nervous system. Comprised of 10 chapters, this volume begins with an overview of microprocedures used in neurochemistry, followed by a discussion on the importance of choosing the biological material for microanalysis. The isolation of nervous tissue for analysis is then considered, with particular reference to invertebrate neurons; cell components from fresh, "fixed," freeze-dried, and frozen impregnated tissue; and discrete areas of nervous tissue. Subsequent chapters describe some instruments and glassware used in microprocedures, along with the applications of such procedures; general techniques used in microprocedures; microdetermination of phospholipids as well as amines and amino acids as dansyl derivatives; and microelectrophoresis of proteins. This book will be of interest to molecular biologists, microbiologists, physiologists, and neurochemists.