搜索结果: 1-15 共查到“矿床学与矿相学 dissolution”相关记录34条 . 查询时间(0.046 秒)
Molecular-level mechanisms of quartz dissolution under neutral and alkaline conditions in the presence of electrolytes
quartz dissolution molecular-level mechanisms electrolytes pH conditions quantum chemistry calculation
2017/4/11
The mechanisms of quartz dissolution are affected intricately by pH conditions and electrolyte types. Most previous
studies have focused on the mechanisms of quartz dissolution under one specific con...
Dissolution of clay sediments in acid-sulfate systems
Dissolution clay sediments acid-sulfate systems
2012/3/30
Significant quantities of sulfidic sediments have been reported to have recently accumulated in inland wetlands of Murray Darling Basin due to a combination of long periods of inundation and the entra...
Desferrioxamine-B adsorption to and iron dissolution from palygorskite and sepiolite
DFOB Siderophore Fibrous clays Weathering Kinetic Isotherm
2011/11/4
Dissolution weathering of minerals can be greatly affected by the presence of siderophores and their adsorption in soil environments. In this research, adsorption equilibria and kinetics of desferriox...
Properties and Acid Dissolution of Metal-Substituted Hematites
Acid Dissolution Activation Energy Frequency Factor Hematite Iron Oxide Metal Substitution
2011/12/2
Abstract: The dissolution in 1 M HCl of Al-, Mn-, and Ni-substituted hematites and the influence of metal substitution on dissolution rate and kinetics of dissolution were investigated. The inhomogene...
Iron-Oxide Mineralogy of a Mollisol from Argentina: A Study by Selective-Dissolution Techniques, X-Ray Diffraction, and Mossbauer Spectroscopy
Ammonium-Oxalate Dissolution Treatment Chemical Analysis Dithionite-Citrate-Bicarbonate Dissolution Treatment Dithionite-Ethylenediaminetetraacetic Acid Dissolution Treatment
2011/12/6
Abstract: Selective-dissolution techniques by ammonium oxalate (OX), dithionite-citrate-bicarbonate (DCB), and dithionite-ethylenediaminetetraacetic acid (D-EDTA), and X-ray diffraction and M鰏sbauer s...
Dissolution of well and poorly crystallized kaolinites: Al speciation and effects of surface characteristics
crystallized kaolinites surface characteristics dissolution behavio well-crystallized poorly crystallized
2012/3/31
This study compared surface characteristics and dissolution behavior of well-crystallized (KGa-1b)
and poorly crystallized (KGa-2) kaolinite standards. Atomic force microscopy (AFM) revealed that
pa...
Dissolution of the periclase (001) surface: A scanning force microscope study
minerals study periclase surface SFM
2012/3/30
IncontrasttomostionicmineralsstudiedbySFM,thepericlase(001)surfacedissolves
notbyretreatofmonolayerstepsparallelto(001),butbyretreatofaroughsurface 2,dissolutionhasanadditionalcontributionfromretreat...
Aqueous Pb sorption by hydroxylapatite: Applications of atomic force microscopy to dissolution, nucleation, and growth studies
Aqueous Pb sorption hydroxylapatite atomic force nucleation growth studies
2012/3/30
A combination of atomic force microscopy, scanning election microscopy, transmission electron microscopy, energy dispersive spectroscopy, electron diffraction, and X-ray dif-fraction were used to stud...
Surface site-specific interactions of aspartate with calcite during dissolution: Implications for biomineralization
Surface site-specific aspartate with calcite dissolution biomineralization
2012/4/6
Calciteoccurswidelyasamineralcomponentintheexoskeletonsandtissuesofmarine
andfreshwaterinvertebrates.Matrixmacromoleculesinvolvedinregulatingthebiological
growthofcalciteintheseorganismsareknowntosh...
Ab initio calculations on aluminosilicate Q3 species: Implications for atomic structures of mineral surfaces and dissolution mechanisms of feldspars
Ab calculations aluminosilicate Q3 species Implications for atomic structures dissolution mechanisms of feldspars
2012/4/6
Molecularorbitalcalculations onvariousaluminosilicate Q3T-OHandbridging0spe-cieswereperformed to modelatomic structural changesonmineralsurfacesthat occuras
a function ofpH. Calculatedvibrational fre...
Dissolution Process of Phlogopite in Acid Solutions
Alteration Biotite Dissolution Interstratification Leached layer Mica/vermiculite Phlogopite Transmission electron microscopy Vermiculite
2011/12/1
Abstract: The alteration experiments of phlogopite with 0.01 N HCl solution containing 0.1 M NaCl at 50°, 80° and 120°C have been carried out to aid in the understanding of the dissolution process of ...
Evolution of Hematite Surface Microtopography Upon Dissolution by Simple Organic Acids
Atomic force microscope Clay mineral surfaces Dissolution Hematite Organic acids
2011/12/1
Abstract: The surface microtopography of hematite over the course of dissolution in oxalic and citric acids was examined by in-situ and ex-situ atomic-force microscopy, In-situ imaging of the basal-pl...
Smectite-Illite Transition in Barbados Accretionary Wedge Sediments: TEM and AEM Evidence for Dissolution/Crystallization at Low Temperature
Accretionary wedge AEM analyses Barbados Electron diffraction Fluid-sediment interaction Illite Mixed-layer Smectite TEM images
2011/12/1
Abstract: Sediments from depths to 670 m in the Barbados accretionary complex and transecting the décollement zone have been studied by transmission and analytical electron microscopy (TEM/AEM). The s...
Site Occupancy in Nontronite Studied by Acid Dissolution and M鰏sbauer Spectroscopy
Acid dissolution Mossbauer spectroscopy Nontronite Tetrahedral iron
2011/11/30
Abstract: The dissolution of two Ca2+-exchanged nontronite samples has been studied in 10% HCl. Early acid-dissolution studies (Osthaus, 1954) have indicated that after two hours of dissolution most o...
Extraction of Iron Oxides from Sediments Using Reductive Dissolution by Titanium(III)
Dissolution Dithionite Extraction Goethite Hematite Reduction Titanium(III)
2012/1/4
A new iron oxide dissolution method designed to measure the abundance of “free” Fe oxide phases and associated elements in soils and sediments has been tested. The method employs a ternary complex of ...