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Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/14923
Tipo: 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
Título(s) alternativo(s): Microchemical Journal
Autor(es): Santos, Klécia M.
Cortez, Juliana
Raimundo Junior, Ivo Milton
Pasquini, Celio
Boa Morte, Elane Santos da
Korn, Maria das Graças Andrade
Autor(es): Santos, Klécia M.
Cortez, Juliana
Raimundo Junior, Ivo Milton
Pasquini, Celio
Boa Morte, Elane Santos da
Korn, Maria das Graças Andrade
Abstract: 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.
Palavras-chave: LIBS
PVC membrane
Cu2 + ions
Liquid–solid extraction
Pre-concentration
Tipo de Acesso: Acesso Aberto
URI: http://repositorio.ufba.br/ri/handle/ri/14923
Data do documento: 2013
Aparece nas coleções:Artigo Publicado em Periódico (Química)

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