Resumo
In a previous study [1], a bidentate 3,4-hydroxypyridinone (3,4-HPO) ligand was used as a novel colour reagent, in a sequential injection mode, to carry out the spectrophotometric determination of iron(III); the metal ion was previous retained in nitrilotriacetic acid (NTA) microbeads. In this study, the objective was to accomplish both iron(III) retention and spectrophotometric measurement, by functionalizing the beads with the bidentate 3,4-hydroxypyridinone ligand. This way, by using the sorbent/colour reagent in consecutive cycles, the ligand consumption could be minimized. The spectrophotometric reaction was carried out at the beads surface, packed in a lab-on-valve flow cell, in a solid phase spectrometry (SPS) approach. The results obtained were compared with those obtained using the NTA Superflow resin for iron (III) retention. The functionalized beads proved to be a more efficient method to quantify iron(III) at pH~7 if compared to the NTA resin, that retains iron(III) at pH~2. This is an important factor if a direct application to biological samples, namely blood serum, is envisaged.
Idioma original | English |
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Título da publicação do anfitrião | Book of abstracts Analítica 2018 |
Subtítulo da publicação do anfitrião | 9th Meeting of Division of Analytical Chemistry |
Editores | Marcela A. Segundo, Eduarda M. P. Silva, Luísa Barreiros, Lúcia Saraiva |
Editora | Sociedade Portuguesa de Química |
Páginas | 73-73 |
Número de páginas | 1 |
ISBN (impresso) | 9789898124210 |
Estado da publicação | Publicado - mar. 2018 |
Evento | Analítica 2018: 9th Meeting of the Analytical Chemistry Division - Universidade do Porto, Porto Duração: 26 mar. 2018 → 27 mar. 2018 |
Conferência
Conferência | Analítica 2018 |
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País/Território | Portugal |
Cidade | Porto |
Período | 26/03/18 → 27/03/18 |