Browsing Geochemie, Mineralogie, Petrologie by Issue Date
Now showing items 1-20 of 54
-
Gefügekunde natürlich und experimentell verformter Erze am Institut für Mineralogie und Lagerstättenlehre der RWTH Aachen University, 1933 bis 2015 : eine Dokumentation
(Aachen : Universitätsbibliothek der RWTH Aachen, 2015)Diese Dokumentation beschreibt die Entwicklungsgeschichte der Gefügeanalyse von verfometen Erzen am Institut für Mineralogie und Lagerstättenlehre der RWTH Aachen von 1933 bis 2015. -
On the validity of specific rate constants (kSA) in Fe0/H2O systems
(Journal of hazardous materials, 2009)The validity of the specific reaction rate constants (kSA) in modelling contaminant removal in Fe0/H2O systems is questioned. It is shown that the current kSA-model does not consider the large reactive surface area provided ... -
Neon, Helium and Argon isotope systematics of the Hawaiian hotspot
(Univ. Potsdam, 2009)This study presents noble gas compositions (He, Ne, Ar, Kr, and Xe) of lavas from several Hawaiian volcanoes. Lavas from the Hawaii Scientific Drilling Project (HSDP) core, surface samples from Mauna Kea, Mauna Loa, Kilauea, ... -
Prozessbasierte und räumlich verteilte Modellierung der Bodenstickstoffflüsse zur Abschätzung der Auswirkungen des Klimawandels auf Stickstoffverfügbarkeit und Nitratauswaschung im Einzugsgebiet der Oberen Donau - Entwicklung, Validierung und Anwendung einer Komponente des integrativen Entscheidungsunterstützungssystems DANUBIA
(Univ. Köln, 2009)Vor dem Hintergrund des Globalen Wandels sind räumliche und zeitliche Informationen über die Stickstoffverfügbarkeit im Boden und die Nitratauswaschung von entscheidender Bedeutung für die Entwicklung von Maßnahmen zur ... -
Methane oxidation and carbon assimilation in marine sediments
(Univ. Bremen, 2008)Anaerobe Oxidation of Methane, AOM, methanotrophy, stable isotope labeling, stable isotope probing, carbon assimilation, flow-through columns, ANME, Seep-SRB, Gullfaks, Tommeliten. - Anaerobic oxidation of methane (AOM) ... -
Laser ablation ICP-MS in paleoceanography - a regional study on the benthic foraminifer Oridorsalis umbonatus in the Benguela upwelling area off Namibia
(Univ. Bremen, 2008)The different benthic foraminiferal species (epibenthic as well as endobenthic) colonize wide areas of the ocean floor and are widely used for paleoceanographic reconstructions. To improve these reconstructions, it is an ... -
The effect of acidic polysaccharides on the biogeochemistry of iron in the marine environment
(Univ. Bremen, 2008)In the early 1990`s the first IPCC report stated the effect of anthropogenic CO2 emissions on global warming and John Martin`s Iron Hypothesis (Martin and J.H 1990), relating atmospheric dust deposition, a major source of ... -
Arsenic release from a natural rock under near-natural oxidizing conditions
(Engineering in life sciences, 2008)The solubilization of arsenic (As) from an ore material (native Arsenic [As, trig.] with Lollingite [FeAs2, rh.]) was characterized in leaching tests lasting for ≤ 99 days. The experiments were performed with materials of ... -
Characterizing As, Cu, Fe and U solubilization by natural waters
(Springer-Verlag, Berlin/HeidelbergSpringer, Berlin/Heidelberg, 2008)The effects of carbonate concentration and the presence of in-situ generated iron oxide and hydroxide phases (iron oxyhydroxides) on arsenic (As), copper (Cu), and uranium (U) release from natural rocks were investigated ... -
Ein temperaturabhängiges thermodynamisches Modell für das System H+ - NH_hn+4 - Na+ - SO2 -4 - NO-1hn3 - Cl- - H2O
(Univ. Köln, 2008)Atmosphärische Aerosolpartikel spielen eine bedeutende Rolle in verschiedenen Fragestellungen der Luftreinhaltung. Einen wesentlichen Bestandteil ihrer Masse bilden anorganische Komponenten wie Sulfat, Ammonium und Nitrat, ... -
Inorganic geochemical redox proxies - indicators for rapid paleoenvironmental changes and related diagenetic processes in recent and ancient marine sediments
(Univ. Bremen, 2008)Deep-sea fan, early diagenesis, susceptibility, anaerobic oxidation of methane, black shale, anoxia, oceanic anoxic event, trace elements, iron, phosphorus, sediment source, redox changes, enrichment factors, sequential ... -
On the Operating Mode of Bimetallic Systems for Environmental Remediation
(Journal of hazardous materials, 2008) -
Elemental iron (Fe0) for better drinking water in rural areas of developing countries
(Springer, Berlin/Heidelberg, 2008)Many of the reasons behind the anthropogenic contamination problems in rural environments of developing countries lie in changes in the traditional way of life and the ignorance on the toxic potential of introduced ... -
Analyse von Butylzinnverbindungen in Sedimenten mittels GC-AED
(Univ. Hamburg, 2007)Organotin compounds are variously used industrial chemicals. One of the most toxicological relevant compounds is tributyltin (TBT). TBT has been used as an effective component in antifouling paints for decades. Thus, it ... -
Comments on: "Sorption of triazoles to soil and iron minerals" by Y. Jia et al. [Chemosphere 67 (2007) 250258]
(Chemosphere, 2007)This letter suggests possible improvements on the discussion of the adsorptive removal of triazoles by iron minerals which are possible corrosion products of elemental iron materials (Fe0) in a recent article by Jia et al. ... -
Processes of Contaminant Removal in Fe0-H2O Systems Revisited: The Importance of Co-Precipitation
(The open environmental journal, 2007)The mechanism of aqueous contaminant removal by elemental iron (Fe0) materials (e.g., in Fe0-H2O systems) has been largely discussed in the iron technology literature. Two major removal mechanisms are usually discussed: ... -
Entwicklung mineralogischer Färbetechniken und ihre Anwendung auf spezifische Betonphasen zur Analyse der Zusammensetzung von zementgebundenen Baustoffen
(Univ. Halle (Saale), 2007)Ziel der Arbeit war die Entwicklung neuer Methoden zur Analyse der Rezeptur, des Gefüges und der Alterung von zementgebundenen Baustoffen. Dazu wurden mineralogische Färbemethoden so weiterentwickelt, dass sie auf Betonproben ... -
Quantitative Rietveld-Analyse von amorphen Materialien - am Beispiel von Hochofenschlacken und Flugaschen
(Univ. Halle, 2007)Zsfassung in engl. Sprache