carbon stable isotope analysis
An analytical system for stable isotope analysis on carbon monoxide using continuous-flow isotope-ratio mass spectrometry
... Carbon monoxide (CO) has an average mole fraction of only ∼ 100 nmol mol −1 (parts per billion or ppb) in the atmo- sphere, but it has a large yearly turnover of about 2700 Tg (Brenninkmeijer et al., 1999) because ...
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Development of an advanced on-line position-specific stable carbon isotope system and application to methyl tert-butyl ether
... position-specific carbon isotope ...intramolecular isotope ratio measurements has been that optimal pyrolytic fragments are obtained mostly at temperatures where the analyte has not completely ...
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Measurements of the stable carbon isotope composition of dissolved inorganic carbon in the northeastern Atlantic and Nordic Seas during summer 2012
... The analysis procedure for each batch was necessarily slightly different for the standards and samples because of their different states (solid and liquid ...
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Latitudinal trends in stable isotope signatures and carbon concentrating mechanisms of northeast Atlantic rhodoliths
... component analysis (PCA) of the response vari- ables measured (∂ 13 C org , ∂ 13 C T , ∂ 15 N org , % CaCO 3 , C : N ra- tio) and environmental factors (DIC: total dissolved inorganic car- bon; pH; salinity; CO3: ...
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Carbon and nitrogen stable isotope turnover rates and diet–tissue discrimination in Florida manatees (Trichechus manatus latirostris)
... on carbon isotope ratios (Rau et ...for carbon and nitrogen isotopes at the Stable Isotope and Ecology Lab, University of Georgia, Athens, GA, ...both carbon and nitrogen was ...
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Carbon and nitrogen stable isotope ratios can estimate anionic polyacrylamide degradation in soil
... Idaho Stable Isotopes Laboratory at the University of Idaho in the Forest Resources Department for δ 13 C and δ 15 N ...laboratory. Carbon and N content of the soils before PAM application varied widely ...
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Determination of Trophic Structure in Selected Freshwater Ecosystems by using Stable Isotope Analysis
... of carbon (Rounick & Winterbourn ...organic carbon and nutrients for the aquatic organisms inhabiting the ...allochthonous carbon input from the surrounding riparian vegetation in Batu Kurau and ...
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Effects of tissue preservation on carbon and nitrogen stable isotope signatures in syngnathid fishes and prey
... The isotopic composition of animal tissues reflects the dietary isotopic composition, especially for C and N, with a difference of a few units (discrimination factor) [8,9]. Isotopic signatures are species- and ...
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Multivariate analysis of stable isotope data in the traceability process for birds
... for carbon-13 and nitrogen-15 analysis for bird traceability is thus ...data analysis showed a more adequate result for problems with more than one dependent variable, which can be confirmed by ...
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Environmental and taxonomic controls of carbon and oxygen stable isotope composition in Sphagnum across broad climatic and geographic ranges
... pitula were chosen as they reflect the most recently fixed or- ganic matter and should relate better to recent growing sea- son conditions. In Sphagnum, δ 13 C from the capitulum is similar to that of branches within the ...
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Analytical system for stable carbon isotope measurements of low molecular weight (C 2-C6 ) hydrocarbons
... a stable reservoir into which it is being di- luted; and (2) the δ 13 C and inverse mixing ratio should be well-correlated; lest the values calculated become unclear and unreliable (Keeling, ...plot ...
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Simultaneous stable isotope analysis of methane and nitrous oxide on ice core samples
... activated carbon or Hayesep D were filled into separate 100 ml glass bottles, thoroughly outgassed and used to adsorb different amounts of reference air from the SS ...of isotope ratio measurements) ...
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Stable isotope analysis of human hair and nail samples: the effects of storage on samples
... glassy carbon tube (HTW GmbH, Thierhaup- ten, Germany) filled with glassy carbon granulate, silver, and quartz ...per analysis was 350 sec. Measured 2 H ⁄ 1 H and 18 O ⁄ 16 O isotope ratios ...
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Stable Isotope Studies of Fuel Oxygenate Biodegradation.
... T-RFLP analysis showed that three T-RF profiles either persisted or increased in relative abundance over ...this analysis, the organisms most likely responsible for MTBE degradation in the enrichment ...
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APPLICATION OF STABLE ISOTOPE SIGNATURES IN FOOD TRACEABILITY
... Stable isotope analysis has widely been used to trace the origin of organic materials in various fields, such as geochemistry, biochemistry, archeology and ...of stable isotope ...
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Recent advances in the application of stable isotope ratio analysis in forensic chemistry
... of using IRMS to link a pair of radios used to initiate an improvized explosive device where one radio is intact and the other partially destroyed by the blast.This clever idea is explained clearly in the paper and the ...
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1 Stable Carbon Isotope Composition of the Lipids in 2 Natural Cordyceps Sinensis from Major Habitats in
... Keywords: stable carbon isotope analysis; lipids; fatty acids; Cordyceps sinensis ; the Qinghai-Tibetan 27 PlateauC. Introduction 30.[r] ...
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Data Repository Item The Stable Carbon Isotope Composition of dsdna Isolated from an Incipient Paleosol
... Duvall, M.R., Price, R.A., Hills, H.G., Qiu, Y.-L., Kron, K.A., Rettig, J.H., Conti, E., Palmer, J.D., Manhart, J.R., Sytsma, K.J., Michaels, H.J., Kress, W.J., Karol, K.G., Clark, W.D., Hedrén, M., Gaut, B.S., Jansen, ...
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Investigation of tubular handling of bicarbonate in man A new approach utilizing stable carbon isotope fractionation
... of stable carbon isotopes (13C, 12C) in the urinary total ...spectrometric analysis of 13C/12C ratios in urinary total CO2 under normal conditions and during acetazolamide ...
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Stable isotope informed genome-resolved metagenomics reveals that Saccharibacteria utilize microbially-processed plant-derived carbon
... The genome has 1531 protein coding sequences (Add- itional file 2: Table S2) and a full complement of tRNAs (46 in total). The 5S rRNA, 23S rRNA, and 16S rRNA genes are in a single locus that also includes Ala and Ile ...
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