ANODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LEAD USING A CHEMICALLY MODIFIED ELECTRODE BASED ON AZA CROWN ETHER

A glassy carbon electrode was modified by drop-coating technique using 1,4,10,13-Tetraoxa-7,16-diazaciclooctadecano (diaza-18 -crown-6 or DA18C6) and Nafion (NF) for the determination of Pb (II) by square wave anodic stripping voltammetric (SWASV). The new electrode exhibits an increase in due to ma...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	SEGURA,RODRIGO, DÍAZ,KARINA, PIZARRO,JAIME, PLACENCIO,ALAN, TAPIA,DIEGO, FAJARDO,ÁNGELO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2017
Materias:	Aza crown ether anodic stripping voltammetry lead
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403726
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-97072017000403726
record_format	dspace
spelling	oai:scielo:S0717-970720170004037262018-04-02ANODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LEAD USING A CHEMICALLY MODIFIED ELECTRODE BASED ON AZA CROWN ETHERSEGURA,RODRIGODÍAZ,KARINAPIZARRO,JAIMEPLACENCIO,ALANTAPIA,DIEGOFAJARDO,ÁNGELO Aza crown ether anodic stripping voltammetry lead A glassy carbon electrode was modified by drop-coating technique using 1,4,10,13-Tetraoxa-7,16-diazaciclooctadecano (diaza-18 -crown-6 or DA18C6) and Nafion (NF) for the determination of Pb (II) by square wave anodic stripping voltammetric (SWASV). The new electrode exhibits an increase in due to major pre-concentration of aza crown ether and ionic exchange of NF with metal cations. Optimal conditions were: 3 mmol L-1 DA18C6, 3 wt % NF, 10 mmol L-1 HCl as supporting electrolyte, a frequency of 15 Hz, an accumulation time of 300 s and an accumulation potential of -0.80 V. The detection limit was 0.09 μg L-1 and linear range was 10-50 μg L-1. Interference from metal ions such us Fe (II), Pb (II), Cd (II) and Cu (II) was also studied. The method is sensitive, selective and simple with a relative standard deviation of 11%.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.62 n.4 20172017-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403726en10.4067/s0717-97072017000403726
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Aza crown ether anodic stripping voltammetry lead
spellingShingle	Aza crown ether anodic stripping voltammetry lead SEGURA,RODRIGO DÍAZ,KARINA PIZARRO,JAIME PLACENCIO,ALAN TAPIA,DIEGO FAJARDO,ÁNGELO ANODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LEAD USING A CHEMICALLY MODIFIED ELECTRODE BASED ON AZA CROWN ETHER
description	A glassy carbon electrode was modified by drop-coating technique using 1,4,10,13-Tetraoxa-7,16-diazaciclooctadecano (diaza-18 -crown-6 or DA18C6) and Nafion (NF) for the determination of Pb (II) by square wave anodic stripping voltammetric (SWASV). The new electrode exhibits an increase in due to major pre-concentration of aza crown ether and ionic exchange of NF with metal cations. Optimal conditions were: 3 mmol L-1 DA18C6, 3 wt % NF, 10 mmol L-1 HCl as supporting electrolyte, a frequency of 15 Hz, an accumulation time of 300 s and an accumulation potential of -0.80 V. The detection limit was 0.09 μg L-1 and linear range was 10-50 μg L-1. Interference from metal ions such us Fe (II), Pb (II), Cd (II) and Cu (II) was also studied. The method is sensitive, selective and simple with a relative standard deviation of 11%.
author	SEGURA,RODRIGO DÍAZ,KARINA PIZARRO,JAIME PLACENCIO,ALAN TAPIA,DIEGO FAJARDO,ÁNGELO
author_facet	SEGURA,RODRIGO DÍAZ,KARINA PIZARRO,JAIME PLACENCIO,ALAN TAPIA,DIEGO FAJARDO,ÁNGELO
author_sort	SEGURA,RODRIGO
title	ANODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LEAD USING A CHEMICALLY MODIFIED ELECTRODE BASED ON AZA CROWN ETHER
title_short	ANODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LEAD USING A CHEMICALLY MODIFIED ELECTRODE BASED ON AZA CROWN ETHER
title_full	ANODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LEAD USING A CHEMICALLY MODIFIED ELECTRODE BASED ON AZA CROWN ETHER
title_fullStr	ANODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LEAD USING A CHEMICALLY MODIFIED ELECTRODE BASED ON AZA CROWN ETHER
title_full_unstemmed	ANODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LEAD USING A CHEMICALLY MODIFIED ELECTRODE BASED ON AZA CROWN ETHER
title_sort	anodic stripping voltammetric determination of lead using a chemically modified electrode based on aza crown ether
publisher	Sociedad Chilena de Química
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403726
work_keys_str_mv	AT segurarodrigo anodicstrippingvoltammetricdeterminationofleadusingachemicallymodifiedelectrodebasedonazacrownether AT diazkarina anodicstrippingvoltammetricdeterminationofleadusingachemicallymodifiedelectrodebasedonazacrownether AT pizarrojaime anodicstrippingvoltammetricdeterminationofleadusingachemicallymodifiedelectrodebasedonazacrownether AT placencioalan anodicstrippingvoltammetricdeterminationofleadusingachemicallymodifiedelectrodebasedonazacrownether AT tapiadiego anodicstrippingvoltammetricdeterminationofleadusingachemicallymodifiedelectrodebasedonazacrownether AT fajardoangelo anodicstrippingvoltammetricdeterminationofleadusingachemicallymodifiedelectrodebasedonazacrownether
_version_	1714200918684073984

ANODIC STRIPPING VOLTAMMETRIC DETERMINATION OF LEAD USING A CHEMICALLY MODIFIED ELECTRODE BASED ON AZA CROWN ETHER

Ejemplares similares