About: Analysis of low concentration of free ferric oxides in clays by vis diffuse reflectance spectroscopy and voltammetry.

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About: Analysis of low concentration of free ferric oxides in clays by vis diffuse reflectance spectroscopy and voltammetry. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Ferric oxide admixtures in the concentration range 0.1-10% in soils, sediments, and clay mineral samples can be conveniently characterized by Vis diffuse reflectance spectroscopy (DRS) in the region of d-d electron transitions close to 500 tint, voltammetry of microparticles, and voltatmmetry with carbon paste electroactive electrode (CPEE). DRS also detects Fe(Ill) in the clay mineral matrix equally sensitively. Voltammetry of microparticles is suitable for direct detection of free crystalline and amorphous ferric oxides, The determination limit of total free ferric oxides with CPEE is -0.01%. The techniques were tested with six clay mineral samples. XRD was able to detect free FeOOH in only one of them (1.6%). DRS and CPEE also detected 0.19% FeOOH in Be-3 (bentonite of Rokle deposit, Bohemia) and,C 0.04% in reference montmorillonite SWy-2. Ferric oxide admixtures in the concentration range 0.1-10% in soils, sediments, and clay mineral samples can be conveniently characterized by Vis diffuse reflectance spectroscopy (DRS) in the region of d-d electron transitions close to 500 tint, voltammetry of microparticles, and voltatmmetry with carbon paste electroactive electrode (CPEE). DRS also detects Fe(Ill) in the clay mineral matrix equally sensitively. Voltammetry of microparticles is suitable for direct detection of free crystalline and amorphous ferric oxides, The determination limit of total free ferric oxides with CPEE is -0.01%. The techniques were tested with six clay mineral samples. XRD was able to detect free FeOOH in only one of them (1.6%). DRS and CPEE also detected 0.19% FeOOH in Be-3 (bentonite of Rokle deposit, Bohemia) and,C 0.04% in reference montmorillonite SWy-2. (en)
Title	Analysis of low concentration of free ferric oxides in clays by vis diffuse reflectance spectroscopy and voltammetry. Analysis of low concentration of free ferric oxides in clays by vis diffuse reflectance spectroscopy and voltammetry. (en)
skos:prefLabel	Analysis of low concentration of free ferric oxides in clays by vis diffuse reflectance spectroscopy and voltammetry. Analysis of low concentration of free ferric oxides in clays by vis diffuse reflectance spectroscopy and voltammetry. (en)
skos:notation	RIV/61388980:_____/02:50023035!RIV/2003/GA0/A50003/N
http://linked.open.../vavai/riv/strany	71;77
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA205/00/1349), Z(AV0Z4032918), Z(AV0Z4040901)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Grygar, Tomáš Hradil, David
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav anorganické chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	638082
http://linked.open...ai/riv/idVysledku	RIV/61388980:_____/02:50023035
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	voltammetry; Vis spectroscopy; analysis (en)
http://linked.open.../riv/klicoveSlovo	analysis voltammetry Vis spectroscopy
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[BB8B5E285327]
http://linked.open...i/riv/nazevZdroje	Geologica Carpathica
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Detailed magnetic characteristics of power-plant fly ashes
http://linked.open...UplatneniVysledku	2002
http://linked.open...v/svazekPeriodika	53
http://linked.open...iv/tvurceVysledku	Dědeček, Jiří Grygar, Tomáš Hradil, David
http://linked.open...n/vavai/riv/zamer	Synthesis and structure of novel (inorganic) compounds, clusters and composites; mechanisms of conversion and transfer in systems involving inorganic substance Objasňování zákonitostí vztahů struktury a vlastností - zejména dynamiky a chemické reaktivity - látek a molekulárních systémů
issn	0016-7738
number of pages	7 (xsd:int)

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