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Thuan H. Chau, Lesley A. Chesson, Gregory E. BergSNA InternationalStable isotope ratio analysis of bone typically requires 1.0-1.5 mg of collagen for dual measurement of nitrogen (δ15N) and carbon (δ13C) isotope delta values with an additional 10-15 mg required for separate measurement of sulfur (δ34S). However, recent development of an EA-IRMS system with a ramped GC column allows for NCS measurem...
Amelia J. Edwards, Thuan H. Chau, Lyndi Low, Lesley A. Chesson, Gregory E. BergSNA InternationalStudies on archaeological remains have demonstrated that filtering bone collagen does not produce meaningful changes in nitrogen (N) and carbon (C) quality criteria or stable isotope delta (δ) values – if the remains were well preserved. These claims have not been extensively studied for modern human remains. A...
Thi Hao BuiMcGill University - GeotopCompound-specific isotope analyses are done in our lab using the GC-IRMS coupled with a combustion reactor (for d13C) or a high-temperature conversion reactor (for d2H). The standards n-Alkane Mixture Type A6 and Fatty Acid Ester Mixture F8-3 are used to calibrate the d13C and d2H of alkanes and fatty acids, respectively. We needed house standards, which were relatively large ...
Keren Drori, Magdalena Hoffman, and Jan WozniakPicarro Inc.
Fischer-Rush, Jonathan; Rochette, Remy; Paton, Emily; Dickey, Alexandra; Hayden, BrianUniversity of New BrunswickLipid correction models, which use elemental carbon:nitrogen ratios to estimate the effect of lipids on δ13C values, provide a fast and inexpensive alternative to chemically removing lipids from animal tissues prior to analysis. However, the performance of these models varies, especially in whole body invertebrate samples. We generated tissue-specific lipid-c...
Shamsunnahar Suchana, Langping Wu & Elodie PasseportUniversity of TorontoCompound specific isotope analysis (CSIA) is an established tool to study the fate of traditional groundwater contaminants but is only emerging for non-conventional heteroatom-bearing chemicals. We validated an accurate and precise CSIA technique for carbon, hydrogen, and nitrogen stable isotope analysis of nitro- and amino-substituted chlorobenzenes. The compounds are widely used as feedstock chemi...