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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 |
| UTAS Author: | Bowie, AR (Professor Andrew Bowie) |
| ID Code: | 26375 |
| Year Published: | 1998 |
| Web of Science® Times Cited: | 138 |
| Deposited By: | IASOS |
| Deposited On: | 2003-06-18 |
| Last Modified: | 2011-08-10 |
| Downloads: | 0 |
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