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TitleDelta-15N analysis in tree rings: delivering accurate results from samples with high C/N ratios
AuthorSmirnoff, A; Marion, J; Savard, M M; Bégin, C
SourceGeological Survey of Canada, Scientific Presentation 66, 2017, 21 pages, (Open Access)
PublisherNatural Resources Canada
MeetingASITA 2015 - Advances in Stable Isotope Techniques and Applications 2015; Ottawa, ON; CA; June 27-30, 2015
Mediaon-line; digital
File formatpptx; pdf
Subjectsenvironmental geology; Nature and Environment; dendrochronology; isotopic studies; isotopes; carbon nitrogen ratios; analytical methods; climate; temperature; precipitation; soils; chemical analysis; tree rings; biochemistry; methodology; standards; climate change; anthropogenic impacts
Illustrationsschematic representations; drawings; time series; location maps; photographs; flow diagrams; schematic diagrams; tables; graphs
ProgramEnvironmental Geoscience, Coal & Oil Resources Environmental Sustainability
Released2017 08 24
Summary(Plain Language Summary, not published)
Analysis of nitrogen isotopes in tree rings can serve as an indicator of anthropogenic perturbations of the nutritive regime in forests. However, this type of samples is difficult to analyze as they are characterized by extremely low amount of nitrogen and very high content of carbon. The latter might interfere and generate non accurate analyses. Here we present an approach for the analysis of this type of samples developed at the Delta-Lab of the Geological Survey of Canada over the recent years. The approach allows the N isotopic values from wood samples with N concentration as low as 0.03% to be accurately determined using a set of standard equipment.