Standard Reference Materials (Classic Reprint)

Idioma: inglés

Editorial: Forgotten Books, 2018

0260900702 / 9780260900708

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Librería: Forgotten Books, London, Reino UnidoForgotten Books

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Descripción del artículo del vendedor

Print on Demand. This book describes the work done by the Analytical Mass Spectrometry Section of the National Bureau of Standards on the development and characterization of standard reference materials for the isotopic composition of uranium. Many of the general rules and control measures necessary to make a meaningful comparison of ion currents are applicable to the analysis of other elements. Though the initial measurement of isotopic composition of the uranium standard reference materials was completed in 1959, a 5 year period of intensive evaluation and development of chemical procedures, mass spectrometric instrumentation, and mass spectrometric analytical procedures followed. The establishment of sound analytical procedures required evaluation of error contributions from chemistry, instrumentation, and mass spectrometric procedure. Through this work, the stoichiometry of U308 was investigated in hopes of finding an easily reproducible ignition procedure that would give stoichiometric U308. Some of the previous work indicated the rate of cooling could affect the ignition loss and there have been personal communications indicating slight changes in ignition loss at different geographic locations having different altitudes or atmospheric pressures. A series of thermogravimetric analysis ignitions were conducted varying the air pressure and oxygen content. Accurate cooling experiments could not be carried out conveniently with the equipment available. One gram samples of SRM 950a were ignited in a tube furnace to obtain ignition losses under different cooling procedures as well as under various temperatures and pressures. The results showed not only a significant increase in loss on ignition at increasing temperatures but increasing loss with faster cooling rates and indicated that a very slow cooling rate might give a reproducible ignition loss but that it would be nonstoichiometric to approximately the same extent as the ignition used for all samples in the isotopic program. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book.…

N° de ref. del artículo 9780260900708_0

Título
Standard Reference Materials (Classic Reprint)
Autor
E. L. Garner, L. A. Machlan
Editorial
Forgotten Books
Año de publicación
2018
Estado
New
Tipo de libro
print-on-demand item
Encuadernación
Paperback
Idioma
inglés
ISBN 10
0260900702
ISBN 13
9780260900708
Catálogos de vendedores
General Engineering

Forgotten Books

London, Reino Unido

Vendedor de 5 estrellas

Vendedor de IberLibro desde 2 de junio de 2021

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Descripción de la tienda

Forgotten Books’ Classic Reprint Series utilizes the latest technology to regenerate facsimiles of historically important writings. Careful attention has been made to accurately preserve the original format of each page whilst digitally enhancing the quality of the aged text.

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FB &c Ltd

Dalton House, 60 Windsor Avenue
London, Reino Unido SW19 2RR