Publicado

2014-09-01

Electrodes friendly with the environment for detect heavy metal

Electrodos amistosos con el medio ambiente para detectar metales pesados

DOI:

https://doi.org/10.15446/dyna.v81n187.40758

Palabras clave:

Bismuth, Electrodes, Voltammetry, Heavy Metals. (en)
Bismuto, Electrodos, Voltamperometría, Metales Pesados (es)

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Autores/as

  • Jairo Alberto Barón-Jaimez Universidad Nacional Autónoma de México
  • José Luddey Marulanda-Arévalo Universidad Tecnológica de Pereira - Grupo GIMAV
  • José José Barba-Ortega Universidad Nacional de Colombia - Sede Bogotá - Departamento de Física
In the last centuries, heavy metals have been extracted and processed industrially; today, they are part of our food chain and their detection has generated great international interest due to adverse effects, beyond allowed amounts for humans. For many years, mercury electrodes have been used to detect heavy metals; however, due to the new regulations and its high toxicity, new alternatives for its replacement as electrode in electroanalytical techniques have been investigated. Bismuth electrodes have been positioned as an alternative to this type of activity because of its many features similar to mercury and low toxicity. This paper provides an overview of this new type of electrode, along with different parameters to consider in order to obtain better results
Los últimos siglos, los metales pesados han sido extraídos y procesados industrialmente; hoy en día, hacen parte de nuestra cadena alimenticia y su detección ha generado gran interés a nivel internacional debido a los efectos adversos, en cantidades más allá de las permitidas para el ser humano. Por muchos años, los electrodos de mercurio han sido utilizados para detectar metales pesados; sin embargo, debido a las nuevas regulaciones y su alta toxicidad, nuevas alternativas para su reemplazo como electrodo en las técnicas electroanalíticas han sido investigadas. Los electrodos de Bismuto se han situado como una alternativa para este tipo de actividad debido a sus múltiples características semejantes a las del mercurio y su baja toxicidad, en este documento se presenta un panorama de este nuevo tipo de electrodo, junto con diferentes parámetros a tener en cuenta para obtener mejores resultados.

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Citas

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