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A METHOD FOR THE DETERMINATION OF THE CATION EXCHANGE CAPACITY OF CLAY MINERALS AND SOILS
CLAY MINERALS SOILS METHOD
2011/11/15
For many purposes it is desirable to have a method for the determination of the cation exchange capacity of clay minerals based on principles as free from ambiguity as possible. Most of the many metho...
Flow Injection Spectrophotometric Determination of Hydrazine in Environmental Water Samples
Flow Injection Hydrazine Spectrophotometry
2011/12/14
A simple, accurate, sensitive and selective flow injection spectrophotometric method for rapid determination of amounts of hydrazine was proposed in this paper, which was based on p-dimethylamino-benz...
Optimization of synthetic conditions CMC-g-poly (acrylic acid)/Celite composite superabsorbent by Taguchi method and determination of its absorbency under load
polymer gels Taguchi method absorbency under load
2011/12/14
A novel biopolymer-based composite hydrogel was synthesized through chemical crosslinking by graft copolymerization of partially neutralized acrylic acid onto the carboxymethyl cellulose (CMC). The Ta...
Determination of Total Acid in Palygorskite Chemically Modified by N-Butylamine Thermodesorption
palygorskite lanthanum thermodesorption acid catalyst
2011/11/3
The acid properties of palygorskite clay (R1) were studied using n-butylamine as probe molecule.A comparison was made of these properties in palygorskite clay (R1), in an acidified palygorskite (R2) a...
A Deep-Water Glauconitization Process on the Ivory Coast-Ghana Marginal Ridge (ODP Site 959): Determination of Fe3+-Rich Montmorillonite in Green Grains
Eastern Atlantic Fe3+-rich Montmorillonite Foraminifer Fillings Glauconitization Green Clay Pleistocene
2011/12/5
Abstract: The mineral and chemical composition of green glauconitic grains from ODP Site 959 (2100 m water depth) located on the northern flank of the Ivory Coast-Ghana Marginal Ridge was studied. Rec...
A HRTEM Study of Cronstedtite: Determination of Polytypes and Layer Polarity in Trioctahedral 1:1 Phyllosilicates
Cronstedtite HRTEM Layer Polarity Morphology Polytype Stacking Disorder Trioctahedral 1:1 Phyllosilicates
2011/12/5
Abstract: It is shown that polytypes or stacking sequences of cronstedtite, an Fe-bearing trioctahedral 1:1 phyllosilicate, can be determined using near-atomic high-resolution transmission electron mi...
Determination of Mean Crystallite Dimensions from X-Ray Diffraction Peak Profiles: A Comparative Analysis of Synthetic Hematites
BET Hematite Iron Oxides Mean Crystallite Dimension Powder X-ray Diffraction Surface Area XRD
2011/12/8
Abstract: X-ray diffraction (XRD) profile analysis of eight synthetic hematite samples was performed to identify the best parameters for determining the apparent mean crystallite dimension (D) and, co...
Determination of the influence of pressure and dissolved water on the viscosity of highly viscous melts: Application of a new parallel-plate viscometer
Determination pressure dissolved water viscosity highly viscous melts:Application new parallel-plate viscometer
2012/4/1
A parallel-plate viscometer has been designed for use in an internally heated pressure vesse
(IHPV) at pressures up to 350 MPa and at temperatures up to 900 ?C. The viscosity of a melt is
determined...
Determination of Illite-Smectite Structures Using Multispecimen X-ray Diffraction Profile Fitting
Illite-Smectite Simulation Structure Swelling X-Ray Diffraction
2011/12/7
Abstract: A procedure for structural investigations by X-ray diffraction of mixed-layer structures incorporating swelling layers has been developed. For each sample, specimens saturated with different...
Experimental determination of CO2-H2O activity-composition relations at 600-1000 °C and 6-14 kbar by reversed decarbonation and dehydration reactions
CO2-H2O activity-composition relations reversed decarbonation dehydration reaction modified Redlich-Kwong
2012/4/1
Activity-composition relations in CO -H O solutions were determined at 6, 10, abroad temperature-fluid composition ranges from 70 reversed determinations of three simple-systemdecarbonation and dehydr...
Thermal expansion of silicate liquids: Direct determination using container-based dilatometry
silicate liquids container-based dilatometry thermal expansion
2012/3/31
The expansivity of a silicate melt in the relaxed liquid state was obtained by direct dilatometric
measurement for the first time. During the measurement, the liquid sample resides within a metal
co...
XAFS determination of the chemical form of lead in smelter-contaminated soils and mine tailings: Importance of adsorption processes
smelter-contaminated soils mine tailings adsorption processes oxyhydr
2012/3/31
Weinvestigatedsmelter-contaminatedsoilsfromEvin-Malmaison,Nord-Pas-de-Calais,
France,andminetailingsfromLeadville,Colorado,U.S.A.BulkPbconcentrationsrange
from460to1900ppminthetopsoilsatEvin-Malmais...
Precise M鰏sbauer milliprobe determination of ferric iron in rock-forming minerals and limitations of electron microprobe analysis
ferric iron rock-forming minerals electron microprobe analysis
2012/3/30
Forestimationsof P-T conditionsofigneousandmetamorphicrocks,Fe incoexisting
mineralsiseitherassumedtobezerooriscalculatedfromelectronmicroprobeanalyses
(EMPA)baseduponstoichiometryandchargebalance.G...
In situ structure determination of the high-pressure phase of Fe3O4
high-pressure Fe3O4 GPa
2012/3/30
The crystal structure of a high-pressure Fe O phase was determined by in situ X-ray diffraction3 4
measurements at high pressure and temperature, using an imaging plate detector and monochromatic
s...
Randomly Interstratified Kaolinite-Smectite from Galicia (NW Spain): A New Procedure for Determination
Acid Soil Gabbro Interstratified Kaolinite-Smectite Paleohorizons
2011/12/9
Abstract: A new protocol was developed to examine an assemblage of kaolinite-smectite in a buried horizon of a paleosol developed on gabbro parent material. The new extraction procedure appears suitab...