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1987/07/24
| 米ドル/オンス | |
| Gold | 454 | |
| Silver | 768.25 |
Gold 歴史金価格チャートとグラフ
360日グラフ ,
1 Ounce Gold=? USD
Silver 歴史シルバー価格チャートとグラフ
360日グラフ ,
1 Ounce Silver=? USD
ゴールドのニュース:
- Trace elements in the Athabasca Bituminous Sands: A geochemical . . .
The Athabasca Bituminous Sands (ABS) in northern Alberta, Canada, represent one of the largest reserves of hydrocarbons on the planet, yet there is remarkably little published data on the abundance of potentially toxic trace elements (TEs) in this resource
- Environmental significance of trace elements in the Athabasca . . .
Open pit bitumen mining and upgrading of the Athabasca Bituminous Sands (ABS), the largest of the deposits, began in 1967 Concerns about fugitive release of trace elements (TEs) to the environment began with studies of V, as this is the most abundant trace metal in bitumen
- 1. What are ‘tailings ponds’, and why are they a problem?
bitumen, and were released to water due the alkaline conditions of bitumen extraction For example, Athabasca bitumen contains 1-2% (by weight) naphthenic acids (14) Other substances may be present because they are added by the oil sands company as chemical additives during slurry preparation, bitumen extraction, and or bitumen
- Athabasca Tar Sands Study, the Environmental Impact of In Situ . . .
Within this context, we have proceeded to examine in a theoretical way those actions which we believe will have a significant effect on the environment in the Bituminous Sands Area should commercial in situ production begin
- Environmental Science Processes Impacts - RSC Publishing
Open pit bitumen mining and upgrading of the Athabasca Bituminous Sands (ABS), the largest of the deposits, began in 1967 Concerns about fugitive release of trace elements (TEs) to the environment began with studies of V, as this is the most abundant trace metal in bitumen
- Spatio-temporal variations in dissolved trace elements in peat bog . . .
In the Athabasca Bituminous Sands (ABS) region, in Alberta, Canada, open-pit mining, mainly used for the extraction of bituminous sands located less than 75 m below the ground surface (Guay-Boutet, 2023), generates considerable volumes of dust
- Estimating the bioaccessibility of atmospheric trace elements within . . .
Upgrading and refining of hydrocarbons extracted from the Athabasca bituminous sands (ABS) in Alberta, Canada has remarkably propelled the economy of the province
- Athabasca oil sands: reservoir characterization and its impact on . . .
Understanding the regional reservoir distribution of the McMurray Formation is critical to understanding oil sands opportunities Fluvial estuarine point bar reservoirs are a large portion of the resource that can be developed
- Exploring Surface Water-Bitumen Interactions in Athabasca Oil Sands . . .
The McMurray Formation is an early Cretaceous stratigraphic unit found in northeastern Alberta, Canada, that contains approximately 335 billion barrels of feasibly extractable unconventional petroleum in the bitumen-laden Athabasca Oil Sands region (AOSR)
- Spatial variation and chemical reactivity of dusts from open-pit . . .
The chemical reactivity of trace elements (TEs) in dusts from bitumen mining, upgrading and related industrial activities in the Athabasca Bituminous Sands region (ABS), Alberta, Canada, was evaluated using the acid-soluble fraction of snow
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