Results 101 to 110 of about 50,853 (257)
, 2018 The Lihir (also known as Ladolam) Au deposit in Papua New Guinea is a telescoped ore deposit, in which volcanic sector collapse(s) led to superimposition of shallow-level Au-rich epithermal mineralization upon preexisting but genetically related ...
S. Sykora +7 more
semanticscholar +1 more source
International Journal of Environmental Research and Public Health, 2019 H2O2- and PDS-based reactions are two typical advanced oxidation processes (AOPs). In this paper, a comparative study of H2O2/PDS-based AOPs employing natural pyrite as a catalyst to degrade methylene blue (MB) was reported.
Liang Sun +3 more
semanticscholar +1 more source
Current Practices for Analyzing Soils and Sediments via Mössbauer Spectroscopy
Journal of Plant Nutrition and Soil Science, EarlyView.ABSTRACT Environmental scientists are increasingly returning to Mössbauer spectroscopy (MBS) to reveal details about iron (Fe)‐bearing phases in soils and sediments. MBS is particularly powerful at distinguishing between Fe(II) and Fe(III) and, given appropriate background information, can offer exceptionally precise information on Fe speciation in ...
Aaron Thompson +9 more
wiley +1 more source
Advances in Materials Science and Engineering, 2016 Arsenic is one of the materials that has a worldwide concern because of its high toxicity and chronic effects on human health. The existence of arsenic as As (III) is about 56 times poisonous as As (V) and more difficult to process.
Guobao Chen, Zhangfu Zhu, Yong Qin
doaj +1 more source
Литосфера, 2018 Object . The zonal pyrite nodules and metacrystals from siliceous siltstones of ore-bearing horizon of the Second ore body from the Yubileynoe massive sulfide deposit are studied. Materials and methods .
Alexander S. Tseluyko +2 more
doaj +1 more source
Journal of Plant Nutrition and Soil Science, EarlyView.Abstract Wet‐chemical extraction of soil to quantify pedogenic species or to remove specific compounds prior to other analyses is an established approach in analytical soil mineralogy and soil chemistry. Interpretation and informational value of data derived from long‐established and frequently used extractions, for instance involving dithionite ...
Thilo Rennert, Katharina R. Lenhardt
wiley +1 more source
Minor elements in pyrite and their effects on the cube-edge of pyrite
The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 1963 Investigations concerning the concentration of minor elements (Co, Ni, Mn, As) in pyrites and cube-edge measurements were carried out on thirty-nine specimens taken from the Chichibu mine (26 samples), the Taishu mine (7 samples), and the Ashio mine (6 samples), by using X-ray fluorescent method as well as X-ray diffraction method. The results obtained
Kiyoshi Takimoto +2 more
openaire +2 more sources
Journal of Plant Nutrition and Soil Science, EarlyView.Clay mineral–hydrophobic organic compound interactions were studied with hexachlorobenzene and 21 bentonites. Adsorption strength varies depending on bentonite properties. For highly adsorptive bentonites, adsorption is comparable with adsorption to organic matter.
Leonard Böhm +6 more
wiley +1 more source
Pyrite-induced hydroxyl radical formation and its effect on nucleic acids
Geochemical Transactions, 2006 Background Pyrite, the most abundant metal sulphide on Earth, is known to spontaneously form hydrogen peroxide when exposed to water. In this study the hypothesis that pyrite-induced hydrogen peroxide is transformed to hydroxyl radicals is tested ...
Leifer Nicole +6 more
doaj +1 more source
Effect of pyrite type on the electrochemistry of chalcopyrite/pyrite interactions
Physicochemical Problems of Mineral Processing, 2018 Physicochemical Problems of Mineral Processing; ISSN 2084 ...
Forbes, Elizaveta +2 more
openaire +3 more sources