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| Autor principal: | |
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| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Universidad de Oriente
2018
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| Materias: | |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=443557939009 https://www.redalyc.org/journal/4435/443557939009/ https://www.redalyc.org/journal/4435/443557939009/html/ https://www.redalyc.org/journal/4435/443557939009/443557939009.epub https://www.redalyc.org/journal/4435/443557939009/movil |
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- A new potentiometric sensor for nitrate using diethylphthalate (DEP) as plasticizer and triocthylmethylammonium chloride (TOMACl) as ionophore María de los Ángeles Arada Pérez Karel Yasmany Nápoles Florián Química Diethilphthalate (DEP) Selectivity Coefficient Ion Selective Electrode (ISE) Triocthylmethylammonium Chloride (TOMACl) In this work, a potentiometric sensor for nitrate using diethylphthalate (DEP) as plasticizer, triocthylmethylammonium chloride (TOMACl) as ionophore and poly (vinylchloride) (PVC) as matrix is valued. Some parameters of evaluation of the electrode are presented: slope (S), practical detection limit (PDL), lower limit of linear response (LLLR), lifetime, influence of the pH on the response of the electrode and the potentiometric selectivity coefficients (org.siir.client.entities.InlineGraphic@1fab4c0). The constructed electrode exhibited a Nernstian response to NO3 - over a wide concentration range (10-6 to 10-2 mol∙dm-3), with a slope of -70,71 ( 1,05 mV/dec. It showed a fast response time (20 s).The electrode showed a good performance in the pH range 3 - 9 and lifetime of 2 - 2,5 months. The selectivity coefficients for various ions were calculated. 2018 artículo científico 0258-5995 https://www.redalyc.org/articulo.oa?id=443557939009 https://www.redalyc.org/journal/4435/443557939009/ https://www.redalyc.org/journal/4435/443557939009/html/ https://www.redalyc.org/journal/4435/443557939009/443557939009.epub https://www.redalyc.org/journal/4435/443557939009/movil en http://www.redalyc.org/revista.oa?id=4435 Revista Cubana de Química application/pdf Universidad de Oriente Revista Cubana de Química (Cuba) Num.2 Vol.30