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Concentrations of Platinum Group Elements in 122 U.S.

In order to accurately determine the concentration of the platinum group elements (PGE) in coal, additional data were obtained by inductively coupled plasma mass spectroscopy, an analytical method having part-per-billion (ppb) detection limits for these elements. These data indicate that the PGE in coal occur in concentrations

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Platinum-group element concentrations in BCR-723: A

2007-1-23  1. Introduction. An important advancement in the measurement of platinum-group elements (PGEs) in solid environmental matrices occurred with the certification of BCR-723 in 2002 , .The final development of this certified reference material (CRM) followed a successful feasibility study of a tunnel-dust sample (CW-7) collected in 1994 under the auspices of the Standards, Measurements and Testing ...

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Concentration of platinum-group elements by magmatic

1992-11-1  These observations, as well as the association of the J-M reef at the first significant stratigraphic break in the Cl/(Cl + F) ratio of apatite and the relatively high solubility of Pt and Pd as aqueous Cl complexes, are consistent with the formation of the J-M reef by exsolution of Cl-

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4. PLATINUM-GROUP-ELEMENT CONCENTRATIONS IN

2007-1-19  PGE concentrations in the different lithologies within the drill cores, (2) locate platinum-group minerals (PGM), and so (3) examine the processes of extraction of PGE from the mantle and the elements' re-concentration in the oceanic crust. Also, access to this Hess Deep core permits a comparison of PGE concentrations in the very young

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Determination of low concentrations of platinum group

Accurate and precise determination of platinum group elements (PGEs) at ppb concentrations in geological samples is important but problematic. This paper reports an improved analytical method for the determination of Pt, Pd, Ru, Ir and Rh at sub-ppb levels by isotope dilution-inductively coupled plasma mass

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[PDF] Concentration of Platinum Group Elements during

Numerous unique geological processes [1] took place during the early Earth evolution; several of them, especially those occurring in the Hadean—Early Archean and later, are reflected in the modern geological (geophysical, geochemical, etc.) pattern. One such significant enigmatic feature is the preservation of extremely dense and heavy platinum group elements (PGEs): Pt, Pd, Rh, Ru, Ir, Os.

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Concentration of Platinum Group Elements during the

2017-4-11  initial concentration and preservation of PGEs, their assciation with anoo r-thosites, and formation of layered intrusions are discussed in detail. The main aim of this article is analysis of the requirementsinitial concentration and — preservation of PGE and PGM (Platinum Group Minerals) during the early

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Concentration of some platinum-group metals in coal -

1981-6-1  Concentration of some platinum-group metals in coal. Int. J. Coal Geol., 1: 95--99. New data on some platinum group metals in coal indicate that the concentration of Pt is generally less than about 5 ppb, that of Pd is generally less than 1 ppb, and that of Rh is generally less than 0.5 ppb.

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Platinum group element and cerium concentrations in

2016-2-1  Anthropogenic platinum group element (Pt, Pd and Rh) concentrations in road dusts and roadside soils from Perth, Western Australia Sci. Total Environ. , 317 ( 1–3 ) ( 2003 ) , pp. 121 -

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Platinum Group Element Concentrations and Osmium

2005-11-15  Platinum, Pd, Rh, and Os were found to occur at elevated concentrations in airborne particles (PM10) collected at urban sites in Boston, MA. Average Pt, Pd, Rh, and Os concentrations were 6.9 ± 1.9, 8.1 ± 1.8, 1.50 ± 0.50, and 0.068 (−0.068 + 0.070) pg m-3, respectively. Elevated Pt, Pd, and Rh concentrations are attributed to automobile catalysts, which use Pt, Pd, and Rh for the removal ...

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Concentration of platinum-group elements by magmatic ...

1992-11-1  These observations, as well as the association of the J-M reef at the first significant stratigraphic break in the Cl/(Cl + F) ratio of apatite and the relatively high solubility of Pt and Pd as aqueous Cl complexes, are consistent with the formation of the J-M reef by exsolution of Cl- and volatile-rich fluids from footwall intercumulus ...

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Concentration of Platinum Group Elements during the

Concentration of Platinum Group Elements during the Early Earth Evolution: A Review*() Arkady Pilchin 1, Lev Eppelbaum 2. 1 Universal Geoscience and Environment Consulting Company, Willowdale, Ontario, Canada. 2 Department of Geosciences, Faculty

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Platinum-group element concentrations in BCR-723: A ...

2007-1-23  1. Introduction. An important advancement in the measurement of platinum-group elements (PGEs) in solid environmental matrices occurred with the certification of BCR-723 in 2002 , .The final development of this certified reference material (CRM) followed a successful feasibility study of a tunnel-dust sample (CW-7) collected in 1994 under the auspices of the Standards, Measurements and

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Concentration of Platinum Group Elements during the

2017-4-11  initial concentration and preservation of PGEs, their assciation with anoo r-thosites, and formation of layered intrusions are discussed in detail. The main aim of this article is analysis of the requirementsinitial concentration and — preservation of PGE and PGM (Platinum Group

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Platinum Group Element Concentrations and Osmium

2005-11-15  Platinum, Pd, Rh, and Os were found to occur at elevated concentrations in airborne particles (PM10) collected at urban sites in Boston, MA. Average Pt, Pd, Rh, and Os concentrations were 6.9 ± 1.9, 8.1 ± 1.8, 1.50 ± 0.50, and 0.068 (−0.068 + 0.070) pg m-3, respectively. Elevated Pt, Pd, and Rh concentrations are attributed to automobile catalysts, which use Pt, Pd, and Rh for the removal ...

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Concentration of Particulate Platinum-Group Minerals ...

Abstract. The petrology, mineralogy and geochemistry of a section of the Merensky Reef at Bafokeng Rasimone Platinum Mine (BRPM) are described. A model for the formation of platinum-group minerals (PGM), sulphide and chromitite is proposed that explains the stratigraphic relationships observed in the Merensky Reef, both at BRPM and at other locations in the Bushveld Complex.

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[PDF] Concentration of Platinum Group Elements during

Numerous unique geological processes [1] took place during the early Earth evolution; several of them, especially those occurring in the Hadean—Early Archean and later, are reflected in the modern geological (geophysical, geochemical, etc.) pattern. One such significant enigmatic feature is the preservation of extremely dense and heavy platinum group elements (PGEs): Pt, Pd, Rh, Ru, Ir, Os.

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(PDF) Concentration of Platinum Group Elements During

2017-3-31  Concentration of Platinum Group Elements . during the Early Earth Evolution: A Review * Arkady Pilchin 1, Lev Eppelbaum 2. 1 Universal Geoscience and Environment Consulting Company, Willowdale ...

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Contrasting platinum-group element concentration

Chromite-rich lithologies in both the lower and the critical zones of the Bushveld Complex in the Potgietersrus area display flat, chondrite-normalized, platinum-group-element (PGE) concentration patterns, whereas those of associated sulphide-bearing, but chromite-poor rocks are considerably steeper. The low (Pt+Pd)/(Os+Ir+Ru) ratio in the chromite-bearing rocks is maintained irrespective of ...

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Chapter 6.11 Platinum - World Health Organization

2013-10-10  Platinum, together with the other platinum group metals, is present at low levels in the lithosphere, with an average platinum concentration of 0.001–0.005 mg/kg (4). Concentrates of economic importance are present in the Transvaal, South Africa, in Siberia and in the Urals at

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Concentration of platinum-group elements by magmatic ...

1992-11-1  These observations, as well as the association of the J-M reef at the first significant stratigraphic break in the Cl/(Cl + F) ratio of apatite and the relatively high solubility of Pt and Pd as aqueous Cl complexes, are consistent with the formation of the J-M reef by exsolution of Cl- and volatile-rich fluids from footwall intercumulus ...

Get Price

Concentration of Particulate Platinum-Group Minerals ...

Abstract. The petrology, mineralogy and geochemistry of a section of the Merensky Reef at Bafokeng Rasimone Platinum Mine (BRPM) are described. A model for the formation of platinum-group minerals (PGM), sulphide and chromitite is proposed that explains the stratigraphic relationships observed in the Merensky Reef, both at BRPM and at other locations in the Bushveld Complex.

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Concentration of Platinum Group Elements during the

2017-4-11  initial concentration and preservation of PGEs, their assciation with anoo r-thosites, and formation of layered intrusions are discussed in detail. The main aim of this article is analysis of the requirementsinitial concentration and — preservation of PGE and PGM (Platinum Group

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Recent Changes in Platinum Group Element

2019-5-25  Automobile catalyst emissions have resulted in the occurrence of elevated Pt, Pd, and Rh concentration in the urban and roadside environment. We investigate the chronology of platinum group elements (PGE) accumulation in dated sediments from an urban lake near Boston, MA. Chronological profiles demonstrate that Pt, Pd, and Rh concentrations increased following the introduction in

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Contrasting platinum-group element concentration

Chromite-rich lithologies in both the lower and the critical zones of the Bushveld Complex in the Potgietersrus area display flat, chondrite-normalized, platinum-group-element (PGE) concentration patterns, whereas those of associated sulphide-bearing, but chromite-poor rocks are considerably steeper. The low (Pt+Pd)/(Os+Ir+Ru) ratio in the chromite-bearing rocks is maintained irrespective of ...

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Platinum Group Element Concentrations and Osmium

2012-4-6  Platinum Group Element Concentrations and Osmium Isotopic Composition in Urban Airborne Particles from Boston, Massachusetts SEBASTIEN RAUCH,*,†,‡ HAROLD F. HEMOND,‡ BERNHARD PEUCKER-EHRENBRINK,§ KRISTINE H. EK,† AND GREGORY M. MORRISON† Water Environment Technology, Chalmers University of Technology, 412 96 Go¨teborg, Sweden ...

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Platinum group element and cerium concentrations in ...

Platinum (Pt), palladium (Pd) and rhodium (Rh) are accumulating globally in the environment, due to their use as catalysts to control automotive exhaust emissions. While environmental increases in platinum metal concentrations have been well documented for a number of countries, published data for C

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(PDF) Concentration of some platinum-group metals in coal

New data on some platinum group metals in coal indicate that the concentration of Pt is generally less than about 5 ppb, that of Pd is generally less than 1 ppb, and that of Rh is generally less ...

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Chapter 6.11 Platinum - World Health Organization

2013-10-10  Platinum, together with the other platinum group metals, is present at low levels in the lithosphere, with an average platinum concentration of 0.001–0.005 mg/kg (4). Concentrates of economic importance are present in the Transvaal, South Africa, in Siberia and in the Urals at

Get Price

Sources of Platinum Group Elements in the Environment ...

2014-11-7  Platinum group elements (PGE, i.e. Pt, Pd, Rh, Ir, Ru, Os) are among the least abundant elements in the Earth’s continental crust. PGE concentrations in urban and roadside environments are, however, increasing as a result of anthropogenic emissions. Automobile catalysts are generally considered the main PGE source into the urban and roadside ...

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