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Determination of sub-nanomolar levels of iron in seawater using flow injection with chemiluminescence detection

Citation

Bowie, AR and Achterberg, EP and Mantoura, RFC and Worsfold, PJ, Determination of sub-nanomolar levels of iron in seawater using flow injection with chemiluminescence detection, Analytica Chimica Acta, 361, (3) pp. 189-200. ISSN 0003-2670 (1998) [Refereed Article]

DOI: doi:10.1016/S0003-2670(98)00015-4

Abstract

The development of a highly sensitive system for the shipboard determination of dissolved iron at the sub-nM level is presented. The technique is based on a flow injection method coupled with luminol chemiluminescence detection. Dissolved Fe(II+lII) levels are determined after Fe(III) reduction using sulphite and in-line matrix elimination/preconcentration on an 8-hydroxyquinoline (8-quinolinol) chelating resin column. The detection limit (3s) is 40 pM when 1.5 ml of sample is loaded onto the column, and the relative standard deviation is 3.2% (n=5) for a 1.0 nM Fe sample. One analytical cycle can be completed in 3 min. The automated method proved reliable when employed on-board the RRS James Clark Ross during Autumn 1996, mapping dissolvable Fe(II+III) levels along the Atlantic Meridional Transect from 50°N to 50°S. Data from vertical profiles through the upper water column are presented.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Instrumental Methods (excl. Immunological and Bioassay Methods)
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Bowie, AR (Associate Professor Andrew Bowie)
ID Code:26375
Year Published:1998
Web of Science® Times Cited:124
Deposited By:IASOS
Deposited On:2003-06-18
Last Modified:2011-08-10
Downloads:0

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