Carbon isotopic analyses

Sealy, J.C. 1996 Seasonality of rainfall around the Last Glacial Maximum as reconstructed from carbon isotope analyses of animal bones from Nelson Bay Cave. South African Journal of Science 92 441 144. 

Aggarwal PK, ME Fuller, MM Gurgas, JF Manning, MA Dillon (1997) Use of stable oxygen and carbon isotope analyses for monitoring the pathways and rates of intrinsic and enhanced in situ biodegradation. 

Douglas, G. and Savin, S.M. (1973) Oxygen and carbon isotope analyses of Cretaceous and Tertiary foraminifera from the central North Pacific. Washington, D.C. U.S. Govt. Printing Office, Initial Reports of the Deep Sea Drilling Project, 17, 591-605. 

Shackleton, N.J. and Kennett, J.P. (1975a) Paleotemperature history of the Cenozoic and the initiation of Antarctic glaciation oxygen and carbon isotope analyses in DSDP Sites 277, 279, and 281. Initial Reports of the DSDP, 29, Washington, D.C. U.S. Gov. Printing Office, pp. 743-755. 

Simoneit BRT, Gompound-specific carbon isotope analyses of individual long-chain alkanes and alkanoic acids in Harmattan aerosols, Atmosph Environ 31 ... 

Table 11. Descriptions of human bone samples and results of carbon isotope analyses...

Figure 6. Carbon isotopic analyses of archaeological human bone compared to the theoretical model for herbivores, the theoretical model for carnivores, and the expected ranges of carbon isotopic composition of human bone for eight possible diets (see Figure 5 for identification of diet types).

Swart P. K., Grady M. M., and Pillinger C. T. (1983) A method for the identification and elimination of contamination during carbon isotopic analyses of extraterrestrial samples. Meteoritics 18, 137-154. 

Types of analyses PI = fluid inclusions, ME = major element analyses Min = mineral analyses TE = trace element analyses Sr = Sr isotope analyses Nd = Nd isotope analyses Pb = Pb isotope analyses, O = oxygen isotope analyses, C = carbon isotope analyses, U-Pb = U-Pb geochronology on accessory phases (zircon, rutile, titanite, etc.). 

Kolhatkar R., Kuder T., Philp P., AUen J., and Wilson J. T. (2002) Use of compound-specific stable carbon isotope analyses to demonstrate anaerobic biodegradation of MTBE in groundwater at a gasoline release site. Environ. Sci. Technol. 36(23), 5139-5146. 

H.W. Krueger, R.H. Reesman (1982) Carbon isotope analyses in food technology. Mass Spec-trom. Rev. 1, 205-236... 

Our thanks to Dr. Phil Meyers of the University of Michigan for providing the DSDP samples, and to Margarita Conkrlght for performing the stable carbon Isotope analyses. 

Oxygen and carbon isotopic analyses were made on 166 concretion samples, 34 host rock samples, 54 calcite-cemented beds, 33 veins and 38 mudrock samples. Samples were reacted with 100% phosphoric acid at 25 °C and the extracted gases were analysed on a VG Prism gas-source mass spectrometer. Isotopic values (machine reproducibility 0.02%o are reported relative to the pdb standard. 

V, point count cement volume OC, oxygen-carbon isotopic analyses SR, strontium isotopic analyses TR, trace element analyses. ... 

Goni M.A., EglintonT.I. (1996) Stable carbon isotopic analyses of lignin-derived CuO oxidation products by isotope... 

Rieley G., Collier R.J., Jones D.M., Eglinton G., Eakin P.A., Fallick A.E. (1991) Sources of sedimentary lipids deduced from stable carbon-isotope analyses of individual compounds. Nature 352,425—7. 

In order to obtain more information on the proposed metabolism of 1-chloronaphthalene, compound specific stable carbon isotope analyses were performed. These analyses included the isotopic characterization of... 

Qualitative and quantitative as well as stable carbon isotope analyses were performed and discussed in terms of environmental stability of the groundwater residues described. Anaerobic microbial degradation of the main pollutant 1-chloronaphthalene was evident from identification of 1-chloro-4-naphthol and 1-chloronaphthoic acid as biotic transformation products. While this observation indicates microbial involvement in degradation of chloronaphthalenes, several aspects of our analysis are inconsistent with an extensive degree of microbial degradation ... 

Compound specific stable carbon isotope analyses -a new tool for tracing the fate of organic riverine contaminants... 

In this context the present investigation focussed on the evaluation of a common analytical procedure adapted for the preparation of material utilizable for compound-specific stable carbon isotope analyses of riverine contaminants. Especially the sensitivity of the analytical method and the precision of the isotopic data obtained were studied. So far this analytical procedure has been applied to river water samples for qualitative and quantitative GC/MS analyses (Franke et al. 1995 Dsikowitzky et al. 2002). 

Stable carbon isotope analyses of selected anthropogenic contaminants... 

Considering both the compound and amount related effects compromising the precision of carbon isotope analyses, the sensitivity of the analytical method used can be appointed to an amount down to approx. 5 ng for numerous anthropogenic contaminants. However, it has to be noted that in comparison the precision of the analyses of halogenated and tin containing compounds is generally lower. 

Compound specific carbon isotope analyses of Rhine water samples... 

Compound specific carbon isotope analyses were applied to 8 extracts of Rhine river water. Comparison of the chromatograms from GC/MS and GC/irmMS analyses shows a good correlation of the individual peaks as illustrated in Figure 4. 

The presented results obtained from compound specific carbon isotope analyses applied to standard solutions under various conditions support the following conclusions ... 

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