Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/7462
Título: Spectrophotometric determination of zinc and copper in a multisyringe injection analysis system using a liquid waveguide capillary cell: Application to natural waters
Autor: Páscoa, Ricardo N.M.J.
Tóth, Ildikó V.
Rangel, António O.S.S.
Palavras-chave: Copper
Zinc
Multisyringe
Liquid waveguide capillary cell
Spectrophotometry
Natural waters
Data: 2011
Editora: Elsevier
Citação: PÁSCOA, Ricardo N.M.J; TÓTH, Ildikó V.; RANGEL, António O. S.S. - Spectrophotometric determination of zinc and copper in a multisyringe injection analysis system using a liquid waveguide capillary cell: Application to natural waters. In International Conference on Flow Injection Analysis and Related Techniques, 16th,(ICFIA 2010), Pattaya, Tailândia, 25-30 Abril, 2010. Talanta. ISSN 00399140. Vol. 84 (2011), p. 1267–1272
Resumo: This work exploits a multisyringe injection analysis (MSFIA) system coupled with a long liquid waveguide capillary cell for the spectrophotometric determination of zinc and copper in waters. A liquid waveguide capillary cell (1.0mpathlength, 550mmi.d. and 250mL internal volume) was used to enhance the sensitivity of the detection. The determination for both ions is based on a colorimetric reaction with zincon at different pH values. The developed methodology compares favourably with other previously described procedures, as it allows to reach low detection limits for both cations (LODs of 0.1 and 2mg L−1, for copper and zinc, respectively), without the need for any preconcentration step. The system also provided a linear response up to 100mg L−1 with a high throughput (43 h−1) and low reagent consumption and effluent production. The developed work was applied to natural waters and three certified reference water samples.
Peer review: yes
URI: http://hdl.handle.net/10400.14/7462
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0039914011000555
Aparece nas colecções:CBQF - Artigos em actas / Papers in proceedings

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