Novel on-line sequential preconcentration system of Cr(III) and Cr(VI) hyphenated with flame atomic absorption spectrometry exploiting sorbents based on chemically modified silica

In the present study, a flow injection system using dual mini-columns, SiO2/Al2O3/TiO2 and silica gel functionalized with [3-(2-aminoethylamino)propyl] trimethoxysilane (SiO2/AAPTMS) for the sequential preconcentration of Cr(III) and Cr(VI), respectively, from water samples with FAAS detection was p...

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Veröffentlicht in:	Talanta (Oxford) 2012-10, Vol.100, p.71-79
Hauptverfasser:	Tarley, César R.T., Lima, Giovana F., Nascimento, Danielle R., Assis, Alan R.S., Ribeiro, Emerson S., Diniz, Kristiany M., Bezerra, Marcos A., Segatelli, Mariana G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytic Sample Preparation Methods - methods Analytical chemistry Chemistry Chromium - analysis Chromium - chemistry Cr(III) Cr(VI) Exact sciences and technology Flow Injection Analysis Hydrogen-Ion Concentration Multivariate Analysis Preconcentration Silicon Dioxide - chemistry SiO2/Al2O3/TiO2 and SiO2/AAPTMS Speciation Spectrometric and optical methods Spectrophotometry, Atomic - methods Time Factors
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