{"id":18006,"date":"2002-02-07T00:00:00","date_gmt":"2002-02-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sensors-potencioma%c2%a8trics-selectius-a-tensioactius-anionics\/"},"modified":"2002-02-07T00:00:00","modified_gmt":"2002-02-07T00:00:00","slug":"sensors-potencioma%c2%a8trics-selectius-a-tensioactius-anionics","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/sensors-potencioma%c2%a8trics-selectius-a-tensioactius-anionics\/","title":{"rendered":"Sensors potenciom\u00e9trics selectius a tensioactius ani\u00f3nics"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Joan S\u00e1nchez Rodr\u00edguez <\/strong><\/h2>\n<p>Han sido estudiadas y aplicadas diversas membranas selectivas a especies tensioactivas ani\u00f3nicas.  en un primer grupo, las membranas polim\u00e9ricas basadas en pvc incorporan el para i\u00f3nico formado entre el tetradodecilamonio y el dodecilbenzensulfonato (tda-dbs) y, como plastificante, el o-nitrofeniloctil \u00e9ter. Destacamos, para estas membranas, su comportamiento nernstiano, el amplio rango de ph de trabajo y un patr\u00f3n de selectividad satisfactorio respecto a aniones inorg\u00e1nicos comunes, de acuerdo al modelo previsto por la serie de hofmeister, que permite la determinaci\u00f3n de otras especies tensioactivas relacionadas.  la aplicaci\u00f3n de estas membranas sobre electrodos selectivos basados en resinas de expoxy-grafito ha permitido efectuar valoraciones potenciom\u00e9tricas automatizadas sobre una amplia diversidad funcional de muestras de origen industrial, no observ\u00e1ndose la existencia de una diferencia significativa, en t\u00e9rminos de exactitud y precisi\u00f3n, cuando se comparaban los resultados del  m\u00e9todo potenciom\u00e9trico propuesto con los suministrados por el m\u00e9todo de referencia de epton. Esta misma membrana, implementada sobre electrodos de configuraci\u00f3n tubular, ha conducido a la puesta a punto de un analizador basado en an\u00e1lisis por inyecci\u00f3n en flujo con el que se ha realizado la monitorizaci\u00f3n de ba\u00f1os de limpieza de planchas met\u00e1licas utilziadas para la impresi\u00f3n de papel moneda, compuesto por mezclas de alquilsulfatos en un medio fuertemente alcalino. Se destaca la obtenci\u00f3n de errores relativos inferiores al 1% y una velocidad de an\u00e1lisis de 30 muestras\/h. En una tercera aplicaci\u00f3n, utilizando membranas de pvc  optimizadas, se han revestido transistores de efecto de campo sensibles a iones (isfets) lo que ha permitido el an\u00e1lisis de muestras industriales y comerciales detergentes. Estos dispositivos han presentado un tiempo de vida excelente, supeior a 4 meses, y permiten la automatizaci\u00f3n del proceso de valoraci<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Sensors potenciom\u00e9trics selectius a tensioactius ani\u00f3nics<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Sensors potenciom\u00e9trics selectius a tensioactius ani\u00f3nics <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Joan S\u00e1nchez Rodr\u00edguez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 02\/07\/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> Valle Zafra Manuel Del<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: hortensia Iturriaga Martinez <\/li>\n<li> Vald\u00e9s perez gasga Francisco (vocal)<\/li>\n<li>josep Garc\u00eda raurich (vocal)<\/li>\n<li>Carlos Dominguez horna (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Joan S\u00e1nchez Rodr\u00edguez Han sido estudiadas y aplicadas diversas membranas selectivas a especies tensioactivas ani\u00f3nicas. en un [&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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