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Type: Artigo
Title: Preconcentration Of Nickel(ii) By A Mini-flow System With A Novel Ternary Oxide Solid Phase And Flame Atomic Absorption Spectrometry
Author: Wutke
Nathalia Barbosa; Diniz
Kristiany Moreira; Corazza
Marcela Zanetti; de Oliveira
Fernanda Midori; Ribeiro
Emerson Schwingel; da Fonseca
Bruna Teixeira; Segatelli
Mariana Gava; Teixeira Tarley
Cesar Ricardo
Abstract: A SiO2/Al2O3/Sb2O5 mixed oxide was synthesized via a sol-gel method and applied to the on-line preconcentration of Ni(II) with determination by flame atomic absorption spectrometry. The mixed oxide was characterized by infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray fluorescence, thermogravimetric analysis, and the specific surface area. Analysis was performed by percolating 20.0mL of sample at pH 7.1 through 100mg of SiO2/Al2O3/Sb2O5 packed into a mini-column at 9.5mL min(-1). Under the optimum conditions, a preconcentration factor of 77.5-fold, linear dynamic range from 5.0 to 270.0 mu gL(-1), and limits of detection and quantification of 0.48 and 1.61 mu gL(-1) were obtained. The effects of several concomitant ions were evaluated and no interferences were observed. The method was employed for the analysis of water with good recoveries (92.9-100.6%) and the accuracy was verified by using a marine sediment certified reference material (MESS-3).
Subject: Flame Atomic Absorption Spectrometry
On-line Flow Solid Phase Extraction
Editor: Taylor & Francis Inc
Rights: fechado
Identifier DOI: 10.1080/00032719.2015.1041025
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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