Atomic-Absorption Methods of Analysis Useful in Geochemical Exploration (Classic Reprint) - Brossura

Ward, F. N.

Brossura

ISBN 10: 0365768014 ISBN 13: 9780365768012

Casa editrice: FB&C LTD, 2018

Riassunto

Excerpt from Atomic-Absorption Methods of Analysis Useful in Geochemical Exploration

Atomic-absorption methods for determining 15 elements in soils and rocks are described in sufficient detail for use by nontechnical persons. These elements are silver, bismuth, cadmium, copper, lead, zinc, cobalt, nickel, calcium, lithium, sodium, potassium, gold (three methods), tellurium, and mercury. A few of these methods are modified from published procedures for use on geologic mate rials other than natural waters; the remaining ones have been developed in the us. Geological Survey laboratories.

Insofar as possible, sample dissolution is accomplished by digestion with hot nitric acid, but in certain samples, for example gold and tellurium, dissolution is accomplished by different combinations of hydrobromic acid and bromine, and in other samples, for example alkalis and calcium, dissolution is accomplished by perchloric, nitric, and hydrofluoric acid mixtures. Sample dissolution for the mercury determination is replaced by the application of heat to evolve the element or decompose its compounds. The methods differ in the judicious use of solvent extraction to separate the elements from possible interferences, to achieve a relatively uniform matrix, and to enrich the element above a threshold concentration amenable to atomic-absorption measurement.

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Dettagli dell'edizione

• Editore: FB&C LTD
• Data di pubblicazione: 2018
• Lingua: Inglese
• ISBN 10: 0365768014
• ISBN 13: 9780365768012
• Rilegatura: Copertina flessibile
• Numero di pagine: 56
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