On-line determination of dissolved phosphate in sea-water by ion-exclusion chromatography inductively coupled plasma mass spectrometry

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DOIResolve DOI: http://doi.org/10.1039/b104634a
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TypeArticle
Journal titleJournal of Analytical Atomic Spectrometry
ISSN0267-9477
Volume16
Issue11
Pages13021306; # of pages: 5
AbstractDirect determination of dissolved phosphate in sea-water by ion-exclusion chromatography in combination with inductively coupled plasma mass spectrometry is described. This method was developed as an independent, complementary approach to the standard colorimetric procedure used for the determination of dissolved phosphate in a proposed sea-water reference material. The developed on-line method is rapid, simple and accurate, requiring no sample pre-treatment. One determination can be completed in 6 min. The detection limit (3s), estimated at 0.06 µM (2.0 ng ml−1 as P) with injection of only 100 µl of sea-water, is superior to the 0.15 µM achieved using colorimetry. The dissolved phosphate concentration in sea-water of 1.69 ± 0.04 µM measured by a standard additions technique using the proposed method is in good agreement with the 1.71 ± 0.04 µM determined using a classic colorimetric approach.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10391186
NRC number162
NPARC number8896451
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Record identifierddb940c0-7681-46c5-9b72-f68c164c36db
Record created2009-04-22
Record modified2016-05-09
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