• Repositorio Institucional Universidad de Pamplona
  • Tesis de maestría y doctorado
  • Facultad de Ciencias Básicas
  • Maestría en Química
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    dc.contributor.authorFlórez Barajas, Francisco Javier.-
    dc.date.accessioned2022-09-21T00:37:12Z-
    dc.date.available2019-09-17-
    dc.date.available2022-09-21T00:37:12Z-
    dc.date.issued2019-
    dc.identifier.citationFlórez Barajas, F. J. (2019). Detección colorimétrica de Plomo y Níquel en aguas utilizando nanopartículas de oro sintetizadas con Quitosán [Trabajo de Grado Maestría, Universidad de Pamplona]. Repositorio Hulago Universidad de Pamplona. http://repositoriodspace.unipamplona.edu.co/jspui/handle/20.500.12744/2744es_CO
    dc.identifier.urihttp://repositoriodspace.unipamplona.edu.co/jspui/handle/20.500.12744/2744-
    dc.descriptionEn el presente trabajo se desarrolló un nanobiosensor que fue utilizado en la detección de plomo y níquel en soluciones acuosas de sales preparadas en el laboratorio, inicialmente se sintetizaron las nanopartículas de oro en fase acuosa usando el método coloidal el cual hace parte de los métodos bottom-up, usando como reactivo metálico el ácido tetracloroáurico trihidratado (HAuCl4•3H2O) y como agente reductor se utilizó el quitosán nanopartículas fueron funcionalizadas con ésta misma biomolécula. La formación de nanopartículas metálicas fue confirmada mediante la técnica de dispersión dinámica de luz (DLS) y microscopía electrónica de barrido (SEM) la primera permitió analizar el tamaño de las nanopartículas sintetizadas; a su vez la segunda técnica se empleó para el estudio de los demás aspectos morfológicos de las mismas. La caracterización de las nanopartículas se realizó por medio de absorción UV- visible y para comprobar la función del nanosensor frente a soluciones acuosas de sales de plomo y níquel se usaron técnicas colorimétricas, donde la variación del color inicial de la solución del nanosensor indicó la detección del metal por parte de éste, así como un cambio generado en el espectro de las AuNPs.es_CO
    dc.description.abstractIn the present work a nanobiosensor was developed to be used in the detection of lead and nickel in aqueous solutions of laboratory prepared salts initially the gold nanoparticles were synthesized in aqueous phase using the colloidal method which is part of the bottom-up methods, using tetrachloroauric acid trihydrate as the metallic reagent (HAuCl4 • 3H2O) and chitosan was used as reducing agent, these nanoparticles were functionalized with this same biomolecule. The formation of metallic nanoparticles was confirmed by the Dynamic Light Dispersion technique (DLS) and Scanning Electron Microscopy (SEM) the first one allowed to analyse the size of the synthesized nanoparticles; Simultaneously, the second technique was used to study the other morphological aspects of the itself. The characterization of the nanoparticles was carried out by means of UV-visible absorption and to check the function of the nanosensor against aqueous solutions of lead and nickel salts, colorimetric techniques were used, where the initial color variation of the nanosensor solution indicated the detection of metal by itself, as well as a change generated in the AuNPs spectrum.es_CO
    dc.format.extent46es_CO
    dc.format.mimetypeapplication/pdfes_CO
    dc.language.isoeses_CO
    dc.publisherUniversidad de Pamplona – Facultad de Ciencias Básicas.es_CO
    dc.subjectEl autor no proporciona la información sobre este ítem.es_CO
    dc.titleDetección colorimétrica de Plomo y Níquel en aguas utilizando nanopartículas de oro sintetizadas con Quitosán.es_CO
    dc.typehttp://purl.org/coar/resource_type/c_bdcces_CO
    dc.date.accepted2019-06-17-
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