pubmed-article:18427685 | rdf:type | pubmed:Citation | lld:pubmed |
pubmed-article:18427685 | lifeskim:mentions | umls-concept:C0025663 | lld:lifeskim |
pubmed-article:18427685 | lifeskim:mentions | umls-concept:C0025255 | lld:lifeskim |
pubmed-article:18427685 | lifeskim:mentions | umls-concept:C0022022 | lld:lifeskim |
pubmed-article:18427685 | lifeskim:mentions | umls-concept:C0680730 | lld:lifeskim |
pubmed-article:18427685 | lifeskim:mentions | umls-concept:C1883717 | lld:lifeskim |
pubmed-article:18427685 | lifeskim:mentions | umls-concept:C1704241 | lld:lifeskim |
pubmed-article:18427685 | lifeskim:mentions | umls-concept:C0012222 | lld:lifeskim |
pubmed-article:18427685 | lifeskim:mentions | umls-concept:C0032624 | lld:lifeskim |
pubmed-article:18427685 | lifeskim:mentions | umls-concept:C1148554 | lld:lifeskim |
pubmed-article:18427685 | lifeskim:mentions | umls-concept:C1707429 | lld:lifeskim |
pubmed-article:18427685 | pubmed:issue | 5 | lld:pubmed |
pubmed-article:18427685 | pubmed:dateCreated | 2008-4-22 | lld:pubmed |
pubmed-article:18427685 | pubmed:abstractText | The diffusion coefficients of active components in ion-selective membranes have a decisive influence on the life-time and detection limit of the respective ion-selective electrodes, as well as influencing the rate of polarization and relaxation processes of electrically perturbed ion sensors. Therefore, the rational design of mass transport controlled ion-selective electrodes with sub-nanomolar detection limits requires reliable data on the diffusion coefficients. We have implemented electrochemical methods for the quantitative assessment of both the diffusion coefficients of free ionophores and ion-ionophore complexes. The diffusion coefficients of the pH-sensitive chromoionophore ETH 5294 and the calcium-selective ionophore ETH 5234 were determined in plasticized PVC membranes with different PVC to plasticizer ratios. The diffusion coefficient of the free chromoionophore determined by a chronoamperometric method was validated with optical methods for a variety of membrane compositions. The calcium-selective ionophore ETH 5234 was used as a model compound to assess the diffusion coefficient of the ion-ionophore complex calculated from the time required for the complexes to cross a freshly prepared membrane during potentiometric ion-breakthrough experiments. The difference between the diffusion coefficients of the free ionophore ETH 5234 and the ion-ionophore complex was found to be significant and correlated well with the geometry of the respective species. | lld:pubmed |
pubmed-article:18427685 | pubmed:grant | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:18427685 | pubmed:language | eng | lld:pubmed |
pubmed-article:18427685 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:18427685 | pubmed:citationSubset | IM | lld:pubmed |
pubmed-article:18427685 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:18427685 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:18427685 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:18427685 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:18427685 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:18427685 | pubmed:status | MEDLINE | lld:pubmed |
pubmed-article:18427685 | pubmed:month | May | lld:pubmed |
pubmed-article:18427685 | pubmed:issn | 1364-5528 | lld:pubmed |
pubmed-article:18427685 | pubmed:author | pubmed-author:GyurcsányiRób... | lld:pubmed |
pubmed-article:18427685 | pubmed:author | pubmed-author:LindnerErnoE | lld:pubmed |
pubmed-article:18427685 | pubmed:author | pubmed-author:TóthKláraK | lld:pubmed |
pubmed-article:18427685 | pubmed:author | pubmed-author:ZookJustin... | lld:pubmed |
pubmed-article:18427685 | pubmed:author | pubmed-author:BodorSándorS | lld:pubmed |
pubmed-article:18427685 | pubmed:issnType | Electronic | lld:pubmed |
pubmed-article:18427685 | pubmed:volume | 133 | lld:pubmed |
pubmed-article:18427685 | pubmed:owner | NLM | lld:pubmed |
pubmed-article:18427685 | pubmed:authorsComplete | Y | lld:pubmed |
pubmed-article:18427685 | pubmed:pagination | 635-42 | lld:pubmed |
pubmed-article:18427685 | pubmed:meshHeading | pubmed-meshheading:18427685... | lld:pubmed |
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pubmed-article:18427685 | pubmed:meshHeading | pubmed-meshheading:18427685... | lld:pubmed |
pubmed-article:18427685 | pubmed:meshHeading | pubmed-meshheading:18427685... | lld:pubmed |
pubmed-article:18427685 | pubmed:meshHeading | pubmed-meshheading:18427685... | lld:pubmed |
pubmed-article:18427685 | pubmed:meshHeading | pubmed-meshheading:18427685... | lld:pubmed |
pubmed-article:18427685 | pubmed:year | 2008 | lld:pubmed |
pubmed-article:18427685 | pubmed:articleTitle | Electrochemical methods for the determination of the diffusion coefficient of ionophores and ionophore-ion complexes in plasticized PVC membranes. | lld:pubmed |
pubmed-article:18427685 | pubmed:affiliation | Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szt. Gellért tér 4, 1111, Hungary. | lld:pubmed |
pubmed-article:18427685 | pubmed:publicationType | Journal Article | lld:pubmed |
pubmed-article:18427685 | pubmed:publicationType | Research Support, U.S. Gov't, Non-P.H.S. | lld:pubmed |
pubmed-article:18427685 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
pubmed-article:18427685 | pubmed:publicationType | Research Support, N.I.H., Extramural | lld:pubmed |