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https://repositorio.ufba.br/handle/ri/14923
metadata.dc.type: | Artigo de Periódico |
Título : | An assessment of the applicability of the use of a plasticised PVC membrane containing pyrochatecol violet complexing reagent for the determination of Cu2 + ions in aqueous solutions by LIBS |
Otros títulos : | Microchemical Journal |
Autor : | Santos, Klécia M. Cortez, Juliana Raimundo Junior, Ivo Milton Pasquini, Celio Boa Morte, Elane Santos da Korn, Maria das Graças Andrade |
metadata.dc.creator: | Santos, Klécia M. Cortez, Juliana Raimundo Junior, Ivo Milton Pasquini, Celio Boa Morte, Elane Santos da Korn, Maria das Graças Andrade |
Resumen : | A plasticised PVC membrane containing pyrochatecol violet as complexing reagent has been used to extract and pre-concentrate Cu2 + ions from aqueous solution, aiming at their determination by Laser Induced Breakdown Spectroscopy. The membrane was prepared from a THF cocktail solution on a cellulose acetate support by the dip-coating technique, providing a homogeneous distribution of the complexing reagent and a thickness of 3 μm. The extraction was straightforwardly performed by immersing the membrane in the Cu2 + sample solution buffered at pH 6.0 with sodium acetate. The extraction time defined the working analytical range (from μg L− 1 to mg L− 1) and a 50-min extraction provided a detection limit of 15 μg L− 1 for Cu2 + ions. The membrane is stable for at least 2 months when stored in a desiccator, allowing in-field extractions, that avoid sampling, storage and transport of the aqueous sample to the laboratory. |
Palabras clave : | LIBS PVC membrane Cu2 + ions Liquid–solid extraction Pre-concentration |
metadata.dc.rights: | Acesso Aberto |
URI : | http://repositorio.ufba.br/ri/handle/ri/14923 |
Fecha de publicación : | 2013 |
Aparece en las colecciones: | Artigo Publicado em Periódico (Química) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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1-s2.0-S0026265X13001100-main.pdf | 451,42 kB | Adobe PDF | Visualizar/Abrir |
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