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Intercomparison between FI-CL and ICP-MS for the determination of dissolved iron in Atlantic seawater


Bowie, AR and Ussher, SJ and Landing, WM and Worsfold, PJ, Intercomparison between FI-CL and ICP-MS for the determination of dissolved iron in Atlantic seawater, Environmental Chemistry, 4, (1) pp. 1-4. ISSN 1448-2517 (2007) [Refereed Article]

DOI: doi:10.1071/EN06073


Results from a 3-laboratory blind intercomparison exercise with two widely used analytical methods for the determination of iron in seawater are presented. The two methods used are coprecipitation followed by isotope dilution inductively coupled plasma mass spectrometry (ICP-MS) and chemical reduction to iron(ii) followed by flow injection with chemiluminescence detection (FI-CL). The five samples used were collected from the South Atlantic Ocean as part of the IRONAGES intercomparison exercise. To avoid any inter-bottle variability, the same sample bottles were sent sequentially to three laboratories in England, Australia and the United States over a 12-month period. The results show that there is no statistical difference (P ≤ 0.05) between the shipboard FI-CL method and the directly traceable, low blank, isotope dilution ICP-MS method for the determination of iron in surface South Atlantic seawater. There was also excellent agreement between the overall mean of the three laboratories (0.54 ± 0.03 nM) and the consensus value from an earlier community-wide separate bottle intercomparison using the same IRONAGES sample water (0.59 ± 0.21 nM). © CSIRO 2007.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Chemical oceanography
Objective Division:Environmental Management
Objective Group:Marine systems and management
Objective Field:Measurement and assessment of marine water quality and condition
UTAS Author:Bowie, AR (Professor Andrew Bowie)
ID Code:47363
Year Published:2007
Web of Science® Times Cited:15
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2007-08-01
Last Modified:2010-04-13

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