In situ determination of iron(II) in the anoxic zone of the central Baltic Sea using ferene as spectrophotometric reagent

Meyer, David; Prien, Ralf D.; Dellwig, Olaf; Connelly, Douglas P.; Schulz-Bull, Detlef E.. 2012 In situ determination of iron(II) in the anoxic zone of the central Baltic Sea using ferene as spectrophotometric reagent. Marine Chemistry, 130-131. 21-27. https://doi.org/10.1016/j.marchem.2011.12.002

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Abstract/Summary

Continuous flow analysis for soluble Fe(II) species in seawater was performed with a colorimetric method using ferene as a spectrophotometric reagent. The method is based on the measurement of absorbance of the [FeII(fer)3]4 --complex at 594 nm. No preconcentration-steps are required. Samples prepared in the laboratory in line with external calibration experiments have been successfully analyzed in the nanomolar range (R2 = 0.959). A detection limit of 20 nM was obtained. Furthermore, investigations were performed in situ with a wet chemical analyzer in the water column of the central Baltic Sea. Finally the results were consistent with measurements made by an independent laboratory based method (ICP-OES).

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1016/j.marchem.2011.12.002
Programmes:	NOC Programmes
ISSN:	03044203
Additional Keywords:	Seawater; Redoxcline; Ferene; In situ measurements; Iron(II) sensor; Speciation
Date made live:	02 Mar 2012 09:55 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/433604

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1016/j.marchem.2011.12.002

Programmes:

NOC Programmes

ISSN:

03044203

Additional Keywords:

Seawater; Redoxcline; Ferene; In situ measurements; Iron(II) sensor; Speciation

Date made live:

02 Mar 2012 09:55 +0 (UTC)