Analytical Chemistry in the Exploration, Mining and by A. Strasheim

By A. Strasheim

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Additional info for Analytical Chemistry in the Exploration, Mining and Processing of Materials. Plenary Lectures Presented at the International Symposium on Analytical Chemistry in the Exploration, Mining and Processing of Materials, Johannesburg, RSA, 23–27 August 1976

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This coupled with the multielement capability and wider range of concentrations covered by the working range of emission, makes the inductively coupled plasma look very attractive. However, problems such as light scatter in the optical train, high cost of equipment and the requirement of having a highly skilled research operator have impeded the wide spread acceptance of the technique, to date. A renewed interest is evident in the Grimm type glow-discharge tube for use in emission analysis of alloys.

By the latter half of the 19th century a large number of publications exist­ ed on assay work. However T. Wiln in 1885 stated, that in his opinion no satisfactory procedure had yet been recorded. E. Lathe recorded a similar statement. These comments refer to the quantitative capabilities of the procedures and not their ability to find an ore. Losses of noble metals during assays have been, and still are, the subject of much research. Whether losses occur, depends on the particular metal, the mineralogy and the skill and experience of the assayer.

The scientists and groups responsible for the production and certification of noble metal standard reference materials are to be highly commended. It is to be hoped that more noble metal standards of other sample types will become available in the near future. Pure & Appl. 3 Vol. 49, pp. 1507 - 1518. Pergamon Press, 1977. Printed in Great Britain. ANALYTICAL REQUIREMENTS IN EXPLORATION GEOCHEMISTRY John S. Webb & Michael Thompson Applied Geochemistry Research Group, Imperial College, London SW7 2BP, England Abstract - Geochemical surveys for mineral exploration are based on the systematic sampling and trace analysis of a wide range of naturally occurring materials, with a view to detecting anomalies related to concealed mineral deposits.

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