Results 261 to 270 of about 42,842 (305)

Anthropospheric Losses of Platinum Group Elements

2013
The platinum group elements are among the rarest elements in the Earth’s crust yet each plays an important role in modern society. Despite their technological importance, little has been published on how much is lost during their extraction, processing, use and recycling. This chapter provides estimates of global losses of Pt, Pd, Rh, Ru and Ir at each
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Platinum-Group Element (PGE) Deposits

2000
The platinum-group elements (PGE) comprise a geochemically coherent group of siderophile to chalcophile metals that includes osmium (Os), iridium (Ir), ruthenium (Ru), rhodium (Rh), platinum (Pt), and palladium (Pd). Based on association, the PGE may be divided into two subgroups: the Ir-subgroup (IPGE) consisting of Os, Ir, and Ru and the Pd-subgroup (
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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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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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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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Platinum group elements

2023
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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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Flotation of Platinum Group Elements Ores: A Review

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

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

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