The mobility of platinum-group elements in humic acid under surficial weathering conditions : an experimenal study

Download statistics - Document (COUNTER):

Kotzé, Emmylou: The mobility of platinum-group elements in humic acid under surficial weathering conditions : an experimenal study. Hannover : Gottfried Wilhelm Leibniz Universität, Diss., 2019, 129 S. DOI: https://doi.org/10.15488/9247

Selected time period:

year: 
month: 

Sum total of downloads: 33




Thumbnail
Abstract: 
Although the platinum-group elements (PGE) are known to be mobile under certain conditions in the surficial weathering environment, their mobilization in the presence of humic substances is poorly constrained. In these experiments, platinum and palladium were mobilized and analyzed in solution using laboratory preparations of humic acid solutions, synthetic minerals, and naturally occurring chromitite samples. The composition of synthetic humic acid is an average of naturally occurring humic substances. Experiments were carried out using humic acid powder (HAP), humic acid sodium salt (HASS) and water as solutions. Synthetic powders of PdS, PtS2, PdTe and PdTe2 were used as substrate for the solutions, along with chromite concentrate and tailings material from the Thaba Mine, South Africa. These substrates were exposed to water, HAP and HASS in different concentrations and for different periods of time.
License of this version: Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Document Type: doctoralThesis
Publishing status: publishedVersion
Issue Date: 2019
Appears in Collections:Naturwissenschaftliche Fakultät
Dissertationen

distribution of downloads over the selected time period:

downloads by country:

pos. country downloads
total perc.
1 image of flag of Germany Germany 16 48.48%
2 image of flag of United States United States 4 12.12%
3 image of flag of Canada Canada 4 12.12%
4 image of flag of Philippines Philippines 3 9.09%
5 image of flag of France France 2 6.06%
6 image of flag of Russian Federation Russian Federation 1 3.03%
7 image of flag of Japan Japan 1 3.03%
8 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 1 3.03%
9 image of flag of Belgium Belgium 1 3.03%

Further download figures and rankings:


Hinweis

Zur Erhebung der Downloadstatistiken kommen entsprechend dem „COUNTER Code of Practice for e-Resources“ international anerkannte Regeln und Normen zur Anwendung. COUNTER ist eine internationale Non-Profit-Organisation, in der Bibliotheksverbände, Datenbankanbieter und Verlage gemeinsam an Standards zur Erhebung, Speicherung und Verarbeitung von Nutzungsdaten elektronischer Ressourcen arbeiten, welche so Objektivität und Vergleichbarkeit gewährleisten sollen. Es werden hierbei ausschließlich Zugriffe auf die entsprechenden Volltexte ausgewertet, keine Aufrufe der Website an sich.

Search the repository


Browse