A community-wide intercomparison exercise for the determination of dissolved iron in seawater

A.R. Bowie, E.P. Achterberg, P.l. Croot, H.J.W. de Baar, P. Laan, J.W Moffett, S. Ussher, P.J. Worsfold

OnderzoeksoutputAcademicpeer review

50 Citaten (Scopus)


The first large-scale international intercomparison of analytical methods for the determination of dissolved iron in seawater was carried out between October 2000 and December 2002. The exercise was conducted as a rigorously "blind" comparison of 7 analytical techniques by 24 international laboratories. The comparison was based on a large volume (700 L), filtered surface seawater sample collected from the South Atlantic Ocean (the "IRONAGES" sample), which was acidified, mixed and bottled at sea. Two 1-L sample bottles were sent to each participant. Integrity and blindness were achieved by having the experiment designed and carried out by a small team, and overseen by an independent data manager. Storage, homogeneity and time-series stability experiments conducted over 2.5 years showed that inter-bottle variability of the IRONAGES sample was good (
Originele taal-2English
Pagina's (van-tot)81-99
Aantal pagina's19
TijdschriftMarine Chemistry
Nummer van het tijdschrift1
StatusPublished - 2006

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