Results 221 to 230 of about 40,448 (263)

Geochemistry of platinum group elements in the ocean

Геохимия
The review considers the current state of research on the geochemistry of platinum group elements (PGEs) in the ocean. The behavior of PGE in the aquatic environment is determined by their degree of oxidation, the ability to change it, and complexation. The difference in chemical properties of PGEs leads to the fact that in the ocean they do not retain
E. D. Berezhnaya, A. V. Dubinin
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Platinum Group Elements in Canadian Coal

Energy Sources, 1990
Abstract Platinum group element (PGE) concentrations in seven Cretaceous and Tertiary coal deposits in Canada were determined using plasma mass spectrometry, neutron activation analysis, and direct current plasma spectroscopy. PGE concentrations are generally below detection limits; however, elevated values were determined in Quintette (100 to 1 ...
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Some facts on the platinum-group elements

International Review of Financial Analysis, 2017
The platinum-group elements (PGE) include platinum, palladium, rhodium, ruthenium, iridium, and osmium. In this article, we concentrate on the dependency structure and economic determinants of PGE, silver, and gold prices. We find that the strongest relationship is between silver and gold returns at a weekly frequency (July 1992–July 2016), which ...
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Gold and platinum group element analysis

1987
Throughout history, gold, silver and the platinum group elements have occupied a position of considerable social and economic importance. Indeed, the analytical chemistry of these elements extends back into pre-history, analyses being traditionally performed by fire assay techniques.
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Platinum group element (PGE) deposits

2004
PGE accessible to mankind are derived from the earth’s mantle, with possibly a component coming from the core. This chapter is concerned with (a) the distribution and behavior of PGE in the mantle and in magmas derived from the mantle, (b) the characteristics of deposits derived directly or indirectly from these magmas, and (c) the methods by which ...
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Platinum group elements

2023
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Flotation of Platinum Group Elements Ores: A Review

Mineral Processing and Extractive Metallurgy Review, 2023
M S Jena, N R Mandre
exaly  

Platinum group elements contamination in soils: Review of the current state

Chemosphere, 2021
Stéphane Faucher, Gaétane Lespes, Lionel Savignan   +2 more
exaly  

The Platinum Group Elements Nanoworld

Póster presentado en TEM-UCA (Transmission Electron Microscopy-Universidad de Cádiz), 15-17 de julio 2024.
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Methods for the Determination of Platinum Group Elements in Environmental and Biological Materials: A Review

Critical Reviews in Analytical Chemistry, 2011
Maria Balcerzak
exaly