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Estudio luminiscente de compuestos organoclorados de interés medioambiental en sistemas moleculares organizados y sus aplicaciones analíticas

Authors: Hernández García, Jorge;

Estudio luminiscente de compuestos organoclorados de interés medioambiental en sistemas moleculares organizados y sus aplicaciones analíticas

Abstract

Los bifenilos policlorados (bpcs), dibenzofuranos policlorados (dbfpcs) y dibenxo-p-dioxinas policloradas (dbdpcs) forman un grupo de compuestos de gran toxicidad y de amplia aplicacion industrial, de ahi el gran interes de su estudio. Esta clase de compuestos esta muy difundida en el ambiente como consecuencia de ciertos procesos, tanto naturales como originados por el hombre. En la presente memoria se presentan las caracteristicas espectrofluorimetricas, tanto convencionales, sincronicas, o sincronicas en segunda derivada de bpcs, dbfpcs y dbdpcs en presencia de los siguientes surfactantes: bromuro de hexadeciltrimetilamonio (hdtab), cloruro de bencildimetilhexadecilamonio (bdhac), dodecilbencenosulfonato de sodio (naddbs), laurilsulfato sodico (nals), polioxietileno (10)laurileter (pole), polioxietileno(10)oleileter (brij-96) y polioxietileno(9,5)-p-t-octilfenol o triton x-100 (tx-100), y se comparan con las obtenidas en medio acuoso (2% de etanol-agua) y n-hexano. Se proponen metodos espectrofluorimetricos para la determinacion de 3,4,4'-triclorobifenilo, de 3,3',4,4'-tetraclorobifenilo, de 2,8-diclorodibenzofurano y de 2,3,7,8-tetraclorodibenzofurano en presencia de pole y su aplicacion en agua de mar. Para resolver mezclas de compuesto de alto interes toxicologico que se encuentran juntos en la naturaleza como son el 3,3',4,4'-tetraclorobifenilo y el 2,3,7,8-tetraclorodibenzofuranos se emplea la espectrofluorimetria sincronica en segunda derivada, dado que la convencional o la sincronica presentan problemas de selectividad por el gran solapamiento de los espectros. Asi, se establecen metodos para la determinacion simultanea de ambos compuestos en un medio micelar de pole y su aplicacion en agua de mar...

Programa de doctorado: Química ambiental y ecológica

253 p.

Keywords

2301 química analítica, Fosforimetría, Química analítica, Fluorometría

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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