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000051790 0247_ $$2DOI$$a10.1016/j.chroma.2006.03.004
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000051790 084__ $$2WoS$$aBiochemical Research Methods
000051790 084__ $$2WoS$$aChemistry, Analytical
000051790 1001_ $$0P:(DE-HGF)0$$aBabay, P. A.$$b0
000051790 245__ $$aSeparation of nonylphenol ethoxylates and nonylphenol by non-aqueous capillary electrophoresis
000051790 260__ $$aNew York, NY [u.a.]$$bScience Direct$$c2006
000051790 300__ $$a277 - 285
000051790 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000051790 440_0 $$03154$$aJournal of Chromatography A$$v1116$$x0021-9673
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000051790 520__ $$aCapillary electrophoresis based on non-aqueous solvent background electrolytes was employed, with single and multiple wavelength UV detection, to evaluate discrimination among oligomer components of mixtures of non-ionic, long chain nonylphenol ethoxylates (NPnEO, with n = number of ethoxy units) and their lipophilic degradation products. The tested organic solvents included acetonitrile, methanol, ethanol, 1- and 2-propanol, 1-butanol and tetrahydrofurane in the presence of sodium acetate. A rational variation of composition of background electrolyte solvent mixtures allowed to modify the mobility of electroosmotic flow and the type and degree of interactions between the ionic additive (sodium acetate) and the components of the analyte mixtures. The physicochemical properties of the solvents, such as dielectric constant, viscosity and electron donor-acceptor ability regarding the additive, were considered to improve the resolution of lipophilic compounds with less than three ethoxy groups and the discrimination attainable for longer chain oligomers. The studied methodologies also allowed discerning between surfactants of similar (nominal) ethoxy chain lengths. This was demonstrated by the different peak distribution patterns observed for NPnEO compounds with n = 7.5 and 10, respectively.
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000051790 650_2 $$2MeSH$$aElectrophoresis, Capillary: methods
000051790 650_2 $$2MeSH$$aEthylene Glycols: isolation & purification
000051790 650_2 $$2MeSH$$aPhenols: isolation & purification
000051790 650_2 $$2MeSH$$aSpectrophotometry, Ultraviolet
000051790 650_2 $$2MeSH$$aSurface-Active Agents: isolation & purification
000051790 650_2 $$2MeSH$$aViscosity
000051790 650_7 $$00$$2NLM Chemicals$$aEthylene Glycols
000051790 650_7 $$00$$2NLM Chemicals$$aPhenols
000051790 650_7 $$00$$2NLM Chemicals$$aSurface-Active Agents
000051790 650_7 $$025154-52-3$$2NLM Chemicals$$anonylphenol
000051790 650_7 $$027986-36-3$$2NLM Chemicals$$aterics
000051790 650_7 $$2WoSType$$aJ
000051790 65320 $$2Author$$anon-aqueous capillary electrophoresis
000051790 65320 $$2Author$$anonylphenol ethoxylates
000051790 65320 $$2Author$$alipophilic metabolites
000051790 65320 $$2Author$$acationic complexes
000051790 65320 $$2Author$$aheteroconjugation
000051790 7001_ $$0P:(DE-HGF)0$$aGettar, R. T.$$b1
000051790 7001_ $$0P:(DE-HGF)0$$aSilva, M. F.$$b2
000051790 7001_ $$0P:(DE-Juel1)129410$$aThiele, B.$$b3$$uFZJ
000051790 7001_ $$0P:(DE-HGF)0$$aBatistoni, D. A.$$b4
000051790 773__ $$0PERI:(DE-600)1491247-8$$a10.1016/j.chroma.2006.03.004$$gVol. 1116, p. 277 - 285$$p277 - 285$$q1116<277 - 285$$tJournal of chromatography / A$$v1116$$x0021-9673$$y2006
000051790 8567_ $$uhttp://dx.doi.org/10.1016/j.chroma.2006.03.004
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