Analysis of low concentration of free ferric oxides in clays by vis diffuse reflectance spectroscopy and voltammetry.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F02%3A50023035" target="_blank" >RIV/61388980:_____/02:50023035 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Analysis of low concentration of free ferric oxides in clays by vis diffuse reflectance spectroscopy and voltammetry.
Original language 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.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA205%2F00%2F1349" target="_blank" >GA205/00/1349: Detailed magnetic characteristics of power-plant fly ashes</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2002
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geologica Carpathica
ISSN
0016-7738
e-ISSN
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Volume of the periodical
53
Issue of the periodical within the volume
2
Country of publishing house
SK - SLOVAKIA
Number of pages
7
Pages from-to
71-77
UT code for WoS article
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EID of the result in the Scopus database
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