{"id":19098,"date":"2018-03-09T09:07:57","date_gmt":"2018-03-09T09:07:57","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/bioconcentracion-y-toxicidad-de-tensioactivos-sinteticos-y-sus-intermedios-de-degradacion-sobre-organismos-marinos\/"},"modified":"2018-03-09T09:07:57","modified_gmt":"2018-03-09T09:07:57","slug":"bioconcentracion-y-toxicidad-de-tensioactivos-sinteticos-y-sus-intermedios-de-degradacion-sobre-organismos-marinos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/bioconcentracion-y-toxicidad-de-tensioactivos-sinteticos-y-sus-intermedios-de-degradacion-sobre-organismos-marinos\/","title":{"rendered":"Bioconcentraci\u00f3n y toxicidad de tensioactivos sint\u00e9ticos y sus intermedios de degradaci\u00f3n sobre organismos marinos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> M\u00f3nica S\u00e1ez Ribas <\/strong><\/h2>\n<p>La presente tesis doctoral se encuadra dentro del creciente inter\u00e9s que despierta el conocimiento del comportamiento y del riesgo ambiental (origen, transporte, distribuci\u00f3n, transformaci\u00f3n e interacci\u00f3n con la biota) de los tensioactivos sint\u00e9ticos. El estudio se centra en la caracterizaci\u00f3n de la bioconcentraci\u00f3n, biotransformaci\u00f3n y toxicidad de dos grandes grupos de tensioactivos -los ani\u00f3nicos y los no i\u00f3nicos- sobre organismos marinos. en concreto estos compuestos son los de mayor uso en los detergentes tanto a nivel dom\u00e9stico -el tensioactivo ani\u00f3nico lineal alquibenceno sulfonato, las-, como industrual -el no i\u00f3nico nonilfenol polietoxilado, npeo-, y sus intermedios de degradaci\u00f3n: los \u00e1cidos sulfofenilcarbox\u00edlicos (spcs) y los nonilfenoles (np) y \u00e1cidos nonilfenolcarbox\u00edlicos (npec) respectivamente.  se ha dise\u00f1ado un sistema de exposici\u00f3n en flujo continuo que permite el c\u00e1lculo de los factores de bioconcentraci\u00f3n y la toxicidad de tensioactivos sobre ruditapes semidecussatus. De la misma forma se ha desarrollado un m\u00e9todo anal\u00edtico que permite la detecci\u00f3n y cuantificaci\u00f3n de las, spcs, npeo, np, npec en organismos marinos. Los factores de bioconcentraci\u00f3n para los distintos tensioactivos sbore la almeja ruditapes semidecussatus muestran una clara dependencia con el car\u00e1cter hidr\u00f3fobo del compuesto. se propone una ecuaci\u00f3n lineal que relaciona el factor de bioconcentraci\u00f3n de los distintos compuestos con su coeficiente de partici\u00f3n octanol-agua (kow), que permite realizar una estimaci\u00f3n de los factores de bioconcentraci\u00f3n de otros hom\u00f3logos de la misma familia sin necesidad de realizar ensayos experimentales. Han sido detectados por vez primera, intermedios de degradaci\u00f3n de c11las y c12las, spcs de entre 4 y 13 \u00e1tomos de carbono en su cadena hidrocarbonada en almeja. Las actividades enzim\u00e1ticas antioxidantes en las branquias de ruditapes semidecussatus, presentan un comportamiento diferente<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Bioconcentraci\u00f3n y toxicidad de tensioactivos sint\u00e9ticos y sus intermedios de degradaci\u00f3n sobre organismos marinos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Bioconcentraci\u00f3n y toxicidad de tensioactivos sint\u00e9ticos y sus intermedios de degradaci\u00f3n sobre organismos marinos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 M\u00f3nica S\u00e1ez Ribas <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 C\u00e1diz<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 23\/09\/2002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Eduardo Gonz\u00e1lez Mazo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: damia Barcelo culleres <\/li>\n<li>Juli\u00e1n Blasco moreno (vocal)<\/li>\n<li>pim De voogt (vocal)<\/li>\n<li>Mar\u00eda  del carmen Sarasquete reiriz (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de M\u00f3nica S\u00e1ez Ribas La presente tesis doctoral se encuadra dentro del creciente inter\u00e9s que despierta el conocimiento [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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