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Separation of inositol phosphate isomers in environmental samples by ion-exchange chromatography coupled with electrospray ionization tandem mass spectrometry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Analytical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - BMC, Analytical Chemistry.
BalticSea2020, POB 50005, S-10405 Stockholm, Sweden.
2016 (English)In: Talanta: The International Journal of Pure and Applied Analytical Chemistry, ISSN 0039-9140, E-ISSN 1873-3573, Vol. 161, 392-397 p.Article in journal (Refereed) Published
Abstract [en]

A method for isomeric separation of inositol phosphates (InsPn) in environmental samples originating from different sources such as soil, manure/compost, and aquatic sediments has been developed. The method includes a single NaOH-EDTA extraction step, centrifugation and direct injection of a particle free solution into an ion chromatographic column. Isomeric liquid chromatographic separation was achieved with an ammonium carbonate gradient compatible with electrospray ionization tandem mass spectrometric detection (LC-ESI-MS/MS). The detection limits of the LC-ESI-MS/MS method were between 0.03-0.16µM for the different InsPn, corresponding to 37-99ng P/g sample DW. The method has shown to be able to analyze more than 200 samples from soil, manure and sediment without any severe matrix effects. This will allow future studies of the fate of inositol phosphates in the environment.

Place, publisher, year, edition, pages
2016. Vol. 161, 392-397 p.
National Category
Analytical Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-311060DOI: 10.1016/j.talanta.2016.08.076ISI: 000386989500049PubMedID: 27769422OAI: oai:DiVA.org:uu-311060DiVA: diva2:1058470
Available from: 2016-12-21 Created: 2016-12-21 Last updated: 2016-12-21Bibliographically approved

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