Results 101 to 110 of about 88,261 (305)
Yankuang ceshi, 2017 When Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) is used to analyze the sulfur content of high-sulfur (S≤8%) bauxite, commonly used acid dissolving and alkali fusion methods cannot oxidize sulfur completely, leading to a false ...
HU Xuan, SHI Lei, ZHANG Wei-hua
doaj +1 more source
Comparação de técnicas analíticas para a determinação de sódio, potássio e fósforo em mostras de solos tropicais. [PDF]
, 2011 O fósforo, sódio e potássio são elementos importantes para a avaliação da fertilidade de solos (1, 2). A grande maioria dos laboratórios de análise de fertilidade de solo no Brasil utiliza a fotometria de chama para a determinação de sódio e potássio e a
BERNARDI, A. C. de C. +5 more
core
Diverse Cation Exchange in Layered Titanate Nanostructures for Tailored Catalysis
Advanced Materials, EarlyView.H+(H3O+)‐intercalated layered titanate enables stable intercalation of 42 single‐metal and multication combinations. Alkali‐metal intercalation tunes Rh charge density, yielding an efficient propylene hydroformylation catalyst. These results establish a generalizable intercalation platform for rational catalyst design and provide a library supporting ...
Hyoseok Kim +15 more
wiley +1 more source
Yankuang ceshi, 2015 Hydride Generation (HG) combined with Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) has excellent analytical sensitivity. However, the instable chemical reactions of HG may cause unsatisfactory analytical precision.
WU Zheng, XIONG Ying, WANG Long-shan
doaj +1 more source
Impact of the earthworm Lumbricus terrestris (L.) on As, Cu, Pb and Zn mobility and speciation in contaminated soils [PDF]
, 2011 To assess the risks that contaminated soils pose to the environment properly a greater understanding of how soil biota influence the mobility of metal(loid)s in soils is required. Lumbricus terrestris L. were incubated in three soils contaminated with As,
Hodson, Mark E. +3 more
core +1 more source
Bulk and Surface Dual‐Modification for Stabilizing RuO2 Anode in 2 A cm−2 PEMWE Operation
Advanced Materials, EarlyView.The high‐current‐density stability of the RuO2‐based anode in PEMWE could be taken care of by a bulk and surface dual modification strategy developed in this work, where Cr doping modulates the Ru valence state in the bulk phase, suppressing Ru overoxidation, whereas Si modification stabilizes the reaction interface by inhibiting catalyst ...
Jiayi Tang +5 more
wiley +1 more source
Analyse römischer Ziegel mit ICP-OES/-MS
, 2005 In dieser Arbeit wurde eine Messmethode mit ICP-OES und ICP-MS zur Bestimmung der Gehalte von bis zu 30 Elementen in römischen Ziegeln aus der Provinz Germania Superior entwickelt, die einen Vergleich mit zuvor gemessenen RFA Daten ermöglicht. Da Ziegel eine schwer aufzuschließende Matrix besitzen, wurden als erstes die optimalen Bedingungen für einen ...
openaire +2 more sources
Tannin resin-boron associations: Leaching and biological resistance [PDF]
, 2012 The easy leaching of boron in wood preservation formulations has allowed to use this fungicide only for short term applications. The recently discovered adduct with flavonoids allows boron to resist longer periods of time within wood and consequently ...
Leménager, Nicolas +5 more
core
, 2017 The use of proton exchange membrane (PEM) electrolyzers is the method of choice for the conversion of solar energy when frequently occurring changes of the current load are an issue. However, this technique requires electrolytes with low pH.
Daum, Diemo +9 more
core +1 more source
Platinum group element mineralization at Musongati (Burundi) : concentration and Pd-Rh distribution in pentlandite [PDF]
, 2017 The mafic-ultramafic intrusions of the Karagwe-Ankole belt in Burundi are considered as a new potential source for platinum group elements (PGE). The intrusions have mainly been studied for their PGE potential with regard to PGE concentration, but the ...
Dewaele, Stijn +2 more
core +1 more source