SINGLE-PHASE LIQUID-LIQUID-EXTRACTION IN MONOSEGMENTED CONTINUOUS-FLOW SYSTEMS

dc.creatorFACCHIN, I
dc.creatorMARTINS, JW
dc.creatorZAMORA, PGP
dc.creatorPASQUINI, C
dc.date1994
dc.date46753
dc.date2014-12-16T11:36:52Z
dc.date2015-11-26T16:25:48Z
dc.date2014-12-16T11:36:52Z
dc.date2015-11-26T16:25:48Z
dc.date.accessioned2018-03-28T23:06:32Z
dc.date.available2018-03-28T23:06:32Z
dc.identifierAnalytica Chimica Acta. Elsevier Science Bv, v. 285, n. 3, n. 287, n. 292, 1994.
dc.identifier0003-2670
dc.identifierWOS:A1994MV47400005
dc.identifier10.1016/0003-2670(94)80067-7
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/74268
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/74268
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/74268
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1268711
dc.descriptionMonosegmented continuous-flow analysis (MCFA) was evaluated for the realization of automatic single-phase liquid-liquid extraction. The single-phase mixture is generated by confluence of three solutions (isobutyl methyl ketone-thenoyltrifluoroacetone (IBMK-TTA), aqueous sample solution and ethanol). The resulting homogeneous solution is passed through a sample loop of an MCFA manifold and introduced into a reaction coil. Rapid and almost complete reaction between the analyte and complexing agent is obtained in the single phase. Subsequently, the single-phase monosegment containing the analyte complexed by TTA is broken into two phases (organic and aqueous) by adding saturated NaNO3 solution. The organic portion containing the extracted analyte finally occupies the superior part of the monosegment and is passed through an on-line spectrophotometric detector. The system does not make use of a segmenter or separation device such as is usually employed in continuous-flow extraction methods. The sensitivity of the MCFA single-phase approach is closer to that of the conventional manual extraction method while samples can be processed at 60-80 h(-1).
dc.description285
dc.description3
dc.description287
dc.description292
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationAnalytica Chimica Acta
dc.relationAnal. Chim. Acta
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectFLOW SYSTEM
dc.subjectSAMPLE PREPARATION
dc.subjectUV-VISIBLE SPECTROPHOTOMETRY
dc.subjectEXTRACTION
dc.subjectMONOSEGMENTED CONTINUOUS-FLOW ANALYSIS
dc.subjectSINGLE-PHASE LIQUID-LIQUID EXTRACTION
dc.subjectInjection Analysis
dc.subjectSolvent-extraction
dc.titleSINGLE-PHASE LIQUID-LIQUID-EXTRACTION IN MONOSEGMENTED CONTINUOUS-FLOW SYSTEMS
dc.typeArtículos de revistas


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