Electrochemical Analysis Section: Summary of Activities July 1967 to June 1968 PDF Download
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Author: Roger Gordon Bates Publisher: ISBN: Category : Electrochemical analysis Languages : en Pages : 88
Book Description
Brief summaries of several lines of work under way are given. The review describes briefly new equipment and facilities acquired during the year. A major effort devoted to acidity measurements has led to new pH standards and new reference solutions for pD in heavy water. Solvent effects on acid-base phenomena in mixed solvents have shed some light on the factors, including solvent structure, governing ion-solvent interactions. A start was made on the study of ion-specific electrodes and the establishment of standard scales for ionic activity. Equilibrium data for hydrochloric acid in 92.41 wt. percent ethanol and for the ionization of carbonic acid in heavy water were obtained. The establishment of conductance standards for oceanographic research was begun. The survey concludes with lists of the members of the Section staff, publications and manuscripts produced during the year, talks given by the staff, and committee assignments. (Author).
Author: John Keenan Taylor Publisher: ISBN: Category : Analytical chemistry Languages : en Pages : 144
Book Description
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).
Author: John Keenan Taylor Publisher: ISBN: Category : Analytical chemistry Languages : en Pages : 152
Book Description
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).
Author: J. F. Coetzee Publisher: Elsevier ISBN: 1483138453 Category : Science Languages : en Pages : 68
Book Description
Recommended Methods for Purification of Solvents and Tests for Impurities is a compilation of recommended procedures for purification of solvents and tests for solvent impurities. Ten solvents are covered: acetonitrile, sulfolane, propylene carbonate, dimethyl sulfoxide, dimethylformamide, hexamethylphosphoramide, pyridine, ethylenediamine, N-methylacetamide, and N-methylpropionamide. This book is comprised of 12 chapters and opens with an introduction to general aspects of impurity effects. The rationale for the selection of solvent is explained, and the relative reactivities of solutes in different solvents are described. The following chapters deal with dipolar aprotic solvents (acetonitrile, sulfolane, propylene carbonate, dimethyl sulfoxide, dimethylformamide, hexamethylphosphoramide, and pyridine) for which impurity effects can be particularly severe, along with their general properties (freezing and boiling temperatures, density, dynamic viscosity, refractive index, dipole moment, relative permittivity, etc.) and the typical chronology of improvements in purification procedures and tests for purity. The final three chapters focus on amphiprotic solvents (ethylenediamine, N-methylacetamide, and N-methylpropionamide). This monograph will be a useful resource for chemists.
Author: United States. Superintendent of Documents Publisher: ISBN: Category : Government publications Languages : en Pages :
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Author: Roger Gordon Bates
Author: Roger Gordon Bates
Author: Roger Gordon Bates
Author: John Keenan Taylor
Author: John Keenan Taylor
Author: J. F. Coetzee
Author: 
Author: United States. Superintendent of Documents
Author: 
Author: United States. National Bureau of Standards
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