Flow Injection Analysis of Mercury Using 4-(Dimethylamino) Benzaldehyde-4-Ethylthiosemicarbazone as the Ionophore of a Coated Wire Electrode

A flow injection analysis (FIA) incorporating a thiosemicarbazone-based coated wire electrode (CWE) was developed method for the determination of mercury(II). A 0.1 M KNO(3) carrier stream with pH between 1 and 5 and flow rate of 1 mL·min(−1) were used as optimum parameters. A linear plot within the...

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Detalles Bibliográficos
Autores principales: Tahir, Tara F., Salhin, Abdussalam, Ghani, Sulaiman Ab
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2012
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3522949/
https://www.ncbi.nlm.nih.gov/pubmed/23202196
http://dx.doi.org/10.3390/s121114968
Descripción
Sumario:A flow injection analysis (FIA) incorporating a thiosemicarbazone-based coated wire electrode (CWE) was developed method for the determination of mercury(II). A 0.1 M KNO(3) carrier stream with pH between 1 and 5 and flow rate of 1 mL·min(−1) were used as optimum parameters. A linear plot within the concentration range of 5 × 10(−6)–0.1 M Hg(II), slope of 27.8 ± 1 mV per decade and correlation coefficient (R(2)) of 0.984 were obtained. The system was successfully applied for the determination of mercury(II) in dental amalgam solutions and spiked environmental water samples. Highly reproducible measurements with relative standard deviation (RSD < 1% (n = 3)) were obtained, giving a typical throughput of 30 samples·h(−1).

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