The Use of Flow-Injection Analysis with Chemiluminescence Detection of Aqueous Ferrous Iron in Waters Containing High Concentrations of Organic CompoundsReportar como inadecuado




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1

Department of Chemistry, University of Wyoming, Dept 3838, 1000 E. University Avenue, Laramie, Wyoming 82071, USA

2

Department of Geology and Geophysics, University of Wyoming, Dept 3006, 1000 E. University Avenue, Laramie, Wyoming 82071, USA

3

Department of Civil and Architectural Engineering, University of Wyoming, Dept 3295, 1000 E. University Avenue, Laramie, Wyoming 82071, USA





*

Author to whom correspondence should be addressed.



Abstract An evaluation of flow-injection analysis with chemiluminescence detection FIA-CL to quantify Fe2+aq in freshwaters was performed. Iron-coordinating and-or iron-reducing compounds, dissolved organic matter DOM, and samples from two natural water systems were used to amend standard solutions of Fe2+aq. Slopes of the response curves from ferrous iron standards 1 – 100 nM were compared to the response curves of iron standards containing the amendments. Results suggest that FIA-CL is not suitable for systems containing ascorbate, hydroxylamine, cysteine or DOM. Little or no change in sensitivity occurred in solutions of oxalate and glycine or in natural waters with little organic matter. View Full-Text

Keywords: flow-injection analysis; chemiluminescence; ferrous iron determination; iron oxide dissolution; luminol; Felume flow-injection analysis; chemiluminescence; ferrous iron determination; iron oxide dissolution; luminol; Felume





Autor: Christopher J. Borman 1,* , B. Patrick Sullivan 1, Carrick M. Eggleston 2 and Patricia J. S. Colberg 3

Fuente: http://mdpi.com/



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