rdf:type |
|
lifeskim:mentions |
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pubmed:issue |
2
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pubmed:dateCreated |
2010-10-18
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pubmed:abstractText |
The decomposition reaction of the purple dye murexide in acidic media is used as a probe indicator for protons in nonionic microemulsions. The reaction kinetics primarily rely on the proton concentration and permit assessment of the proton activity in the nonionic microemulsions of water/cyclohexane/Igepal and water/heptane/Igepal. The experiments performed in the two microemulsions covered a wide range of water-to-oil mass fraction for the two systems. The kinetic runs were monitored under pseudo-first order conditions by the stopped-flow technique. The equilibrium constants for the formation of purpuric acid and the kinetic constants for the ensuing decomposition reaction fulfill a trend consistent with the micro compartmentalized nature of the multicomponent medium, and support the use of murexide as an indicator of the proton activity in microemulsions.
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
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pubmed:month |
Dec
|
pubmed:issn |
1095-7103
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pubmed:author |
|
pubmed:copyrightInfo |
Copyright © 2010 Elsevier Inc. All rights reserved.
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pubmed:issnType |
Electronic
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pubmed:day |
15
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pubmed:volume |
352
|
pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
465-9
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pubmed:meshHeading |
pubmed-meshheading:20880540-Coloring Agents,
pubmed-meshheading:20880540-Cyclohexanes,
pubmed-meshheading:20880540-Emulsions,
pubmed-meshheading:20880540-Heptanes,
pubmed-meshheading:20880540-Kinetics,
pubmed-meshheading:20880540-Murexide,
pubmed-meshheading:20880540-Polyethylene Glycols,
pubmed-meshheading:20880540-Protons,
pubmed-meshheading:20880540-Surface Properties,
pubmed-meshheading:20880540-Surface-Active Agents,
pubmed-meshheading:20880540-Water
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pubmed:year |
2010
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pubmed:articleTitle |
Evaluation of proton activity in microemulsions by a kinetic probe.
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pubmed:affiliation |
Universidad de Burgos, Departamento de Química, 09001 Burgos, Spain.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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