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Type: Artigo de periódico
Title: X-ray fluorescence determination of adsorbed copper on activated charcoal after glycerin complexation
Author: Bueno, Maria Izabel Maretti Silveira
Amaral, Lêda Cristina do
Abstract: X-This work shows an alternative method to copper determination by X-Ray Fluorescence (XRF). Since copper concentration in natural waters is not enough to reach XRF detection limit, a liquid-solid preconcentration procedure was proposed. Glycerin was used to complex the metal increasing its adsorption on activated charcoal. The solid phase was used to XRF determination. Several parameters were evaluated, such as, the complexation pH, the charcoal adsorption limit and the glycerin concentration. The interferences are lead and bismuth and the sensitivities decreased in the order Cu2+, Bi3+ and Pb2+. The advantages of the method are its simplicity, low cost and low spectral interference.
Subject: X-ray fluorescence
liquid-solid extraction
glycerin complexation and charcoal adsorption
Editor: Sociedade Brasileira de Química
Citation: Química Nova. Sociedade Brasileira de Química, v. 21, n. 4, p. 434-436, 1998.
Rights: aberto
Identifier DOI: 10.1590/S0100-40421998000400011
Date Issue: 1-Jul-1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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