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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 61 to 70 of 1913 (0.085 seconds)Spelling suggestions: "subject:"electrochemistry."" "subject:"électrochemistry.""
| 61 |
Electrochemical leaching of gold-bearing arsenopyrite in alkaline cyanide solutions.Sanchez-Corrales, Victor Manuel. January 1989 (has links)
Rest potential measurements, cyclic voltammetry, linear sweep voltammetry and constant potential coulometry were used to determine the electrochemical response of arsenopyrite in the absence and in the presence of cyanide and to determine its dissolution chemistry. Surface oxidation of arsenopyrite is proposed to proceed by a two-step reaction sequence. FeOOH, H₂AsO₃⁻, and Sᵒ, are produced in the initial step. Oxidation of Sᵒ to SO₄²⁻, and H₂AsO₃⁻ to HAsO₄²⁻ account for the second step. Coulometric results confirmed that 14 electrons are involved in the overall reaction. The implications of these results on the cyanidation of arsenical gold-bearing concentrates were also investigated. The response of four different concentrates to various cyanidation techniques was examined. Alkaline pressure oxidation in 1 M NaOH, at 200°C and under 500 psi of oxygen overpressure followed by conventional cyanidation resulted in 81% gold extraction from a concentrate that yielded only 2% gold extraction after direct cyanidation.
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| 62 |
The measurement of small ionic currents in living organisms by means of sensitive magnetometryLennard, R. F. January 1984 (has links)
No description available.
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| 63 |
Charge transfer across the interface of two immiscible electrolyte solutionsVelazquez-Manzanares, Miguel January 1999 (has links)
No description available.
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| 64 |
Synthesis and complexation studies of redox and photo-active macrocyclesDjedovic, Natasha Kate January 2001 (has links)
No description available.
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| 65 |
Electrochemical investigation of transient bubble phenomenaDelaplace, Christine January 1999 (has links)
No description available.
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| 66 |
The development and characterisation of conducting polymer based sensors for use in an electronic noseBlair, Neil January 1994 (has links)
No description available.
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| 67 |
Indirect electrochemical oxidations in organic chemistryZappi, Guillermo Daniel January 1989 (has links)
No description available.
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| 68 |
An investigation of the properties of novel, poly(pyrrole)-based conducting polymersDuke, Andrew James January 1998 (has links)
No description available.
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| 69 |
In-situ and model infrared studies of the electrochemical interfaceWilson, Natalie Elizabeth January 1999 (has links)
No description available.
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| 70 |
Electrochemical studies on the M(III/IV) redox couples of rhodium, osmium and iridium coordination compoundsCipriano, R. A. January 1987 (has links)
No description available.
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