Skip to Main content Skip to Navigation
Journal articles

Determination of dissolved iron(III) in estuarine and coastal waters by adsorptive stripping chronopotentiometry (SCP)

Abstract : An adsorptive stripping chronopotentiometric (SCP) method has been developed for quantification of dissolved iron in estuarine and coastal waters. After UV-digestion of filtered samples the Fe(III) ions in non-deoxygenated samples were complexed with solochrom violet RS (SVRS). The complexes were then accumulated by adsorption on the surface of a mercury-film electrode. The stripping step was performed by applying a constant current of −17 μA. Sensitivity and detection limit were 15 ms nmol−1 L (270 ms μg−1 L) and 1.5 nmol L−1 (84 ng L−1), respectively, for 60-s electrolysis time. Compared with the only other chronopotentiometric method available for measurement of iron in natural waters, our procedure is fifty times more sensitive in a quarter of the electrolysis time. It therefore enables detection of the concentrations currently found in estuarine and coastal waters. The method was successfully used to study the behaviour and seasonal variations of dissolved iron in the Penzé estuary, NW France.
Document type :
Journal articles
Complete list of metadatas

https://hal.univ-brest.fr/hal-00451278
Contributor : Matthieu Waeles <>
Submitted on : Thursday, January 28, 2010 - 4:39:34 PM
Last modification on : Tuesday, June 23, 2020 - 3:40:18 AM

Identifiers

  • HAL Id : hal-00451278, version 1

Collections

Citation

Matthieu Waeles, Ricardo Riso, Benoit Pernet-Coudrier, Pierre Le Corre. Determination of dissolved iron(III) in estuarine and coastal waters by adsorptive stripping chronopotentiometry (SCP). Analytical and Bioanalytical Chemistry, Springer Verlag, 2006, 385, pp.76. ⟨hal-00451278⟩

Share

Metrics

Record views

217