A Study of the Thermodynamics of Retention of Block (co)oligomers Using High-Performance Liquid Chromatography/mass Spectrometry

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F12%3A39895000" target="_blank" >RIV/00216275:25310/12:39895000 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.chroma.2012.05.076" target="_blank" >http://dx.doi.org/10.1016/j.chroma.2012.05.076</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.chroma.2012.05.076" target="_blank" >10.1016/j.chroma.2012.05.076</a>

Result language
angličtina
Original language name
A Study of the Thermodynamics of Retention of Block (co)oligomers Using High-Performance Liquid Chromatography/mass Spectrometry
Original language description
Chromatographic behavior of block (co)oligomers of oxyethylene (EO) and oxypropylene (PO) surfactants in reversed-phase HPLC (RP-HPLC) was investigated. The retention of EO/PO block (co)oligomers depends on the distribution of the individual monomer repeat units, but the sequence of the individual blocks also plays a (less significant) role. The enthalpic and entropic contributions of the EO and PO repeat units to the retention were determined from the data measured at changing temperature. In RP-H PLC,the effect of the repeat PO units on separation is higher than the influence of the repeat EO units. In addition to the enthalpic contributions, the retention is significantly influenced by the entropy (possibly by the change of conformation and solvation of adsorbed molecules); dual molar mass distribution according to the number of EO and PO units complicates correct assignment of the chromatographic peaks to the individual (co)oligomers in complex samples based only on the chromatogr
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CB - Analytical chemistry, separation
OECD FORD branch
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Project
<a href="/en/project/GAP206%2F12%2F0398" target="_blank" >GAP206/12/0398: Two-dimensional separations in liquid media</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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