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dc.contributor.authorGOODHUE, ROBBIE
dc.contributor.authorCOXON, CATHERINE ELIZABETH
dc.date.accessioned2013-09-12T14:14:36Z
dc.date.available2013-09-12T14:14:36Z
dc.date.issued2011
dc.date.submitted2011en
dc.identifier.citationMinet, E., Goodhue, R., Coxon, C.E., Kalin, R.M. & Meier-Augenstein, W., Simplifying and improving the extraction of nitrate from freshwater for stable isotope analyses, Journal of Environmental Monitoring, 13, 2011, 2062 - 2066en
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/67394
dc.descriptionPUBLISHEDen
dc.description.abstractDetermining the isotopic composition of nitrate (NO3 ) in water can prove useful to identify NO3 sources and to understand its dynamics in aquatic systems. Among the procedures available, the `ion-exchange resin method? involves extracting NO3 from freshwater and converting it into solid silver nitrate (AgNO3), which is then analysed for 15N/14N and 18O/16O ratios. This study describes a simplified methodology where water was not pre-treated to remove dissolved organic carbon (DOC) or barium cations (added to precipitate O-bearing contaminants), which suited samples with high NO3 (<400 uM or 25 mgL-1 NO3) and low DOC (typically <417 uM of C or 5 mgL-1 C) levels. % N analysis revealed that a few AgNO3 samples were of low purity (compared with expected % N of 8.2), highlighting the necessity to introduce quality control / quality assurance procedures for silver nitrate prepared from field water samples. Recommendations are then made to monitor % N together with % O (expected at 28.6, i.e. 3.5 fold % N) in AgNO3 in order to better assess the type and gravity of the contamination as well as to identify potentially unreliable data.en
dc.description.sponsorshipEnterprise Ireland project SC/99/015en
dc.format.extent2062en
dc.format.extent2066en
dc.language.isoenen
dc.publisherRoyal Society of Chemistryen
dc.relation.ispartofseriesJournal of Environmental Monitoring;
dc.relation.ispartofseries13;
dc.rightsYen
dc.subjectnitrateen
dc.subjectstable isotope analysisen
dc.titleSimplifying and improving the extraction of nitrate from freshwater for stable isotope analysesen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/cecoxon
dc.identifier.peoplefinderurlhttp://people.tcd.ie/goodhuer
dc.identifier.rssinternalid74272
dc.rights.ecaccessrightsOpenAccess


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