Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/7460
Título: Spectrophotometric sensor system based on a liquid waveguide capillary cell for the determination of titanium: Application to natural waters, sunscreens and a lake sediment
Autor: Páscoa, Ricardo N.M.J.
Tóth, Ildikó V.
Almeida, Agostinho A.
Rangel, António O.S.S.
Palavras-chave: Titanium
Multipumping
Liquid waveguide capillary cell
Spectrophotometry
Trace analysis
Data: 2011
Editora: Elsevier
Citação: PÁSCOA, Ricardo N.M.J....[et al] - Spectrophotometric sensor system based on a liquid waveguide capillary cell for the determination of titanium: Application to natural waters, sunscreens and a lake sediment. Sensors and Actuators B: Chemical. ISSN 0925-4005. Vol. 157 (2011), p. 51– 56
Resumo: An analytical procedure for the spectrophotometric determination of titanium at trace levels was developed. The procedure involves the use of a multipumping flow system (MPFS) coupled with a liquid waveguide capillary cell (LWCC) with 1.0 m path length, 550 mm i.d. and 250 mL internal volume, which enabled to enhance the sensitivity of the determination and thus avoid complex and timeconsuming preconcentration steps. The determination is based on the colorimetric reaction of titanium with chromotropic acid. The limit of detection (3 ) was 0.4 mg/L and a linear response up to 100 mg/L with a sample throughput of 46 h−1, and a low reagent consumption/effluent production was achieved. The developed procedure was applied to natural waters, sunscreen formulations and one certified lake sediment sample.
Peer review: yes
URI: http://hdl.handle.net/10400.14/7460
Versão do Editor: DOI: 10.1016/j.snb.2011.03.025
Aparece nas colecções:CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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