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Thermoanalytical (TA) analysis is not at all a frequently used method for studying travertine. Therefore the application of two TA techniques is presented for characterization of the Buda-Vár-hegy (Castle Hill), Budakalász and Szomód-Les-hegy Quaternary travertine occurrences in this paper. TA data give comparable results with those of oxygen and carbon stable isotope compositions and offer a new way to estimate the temperature of carbonate precipitation.

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Abstract  

Instrumental neutron activation analysis was applied to 61 ivory samples of which origin countries are known. 12 elements such as Br, Ca, Cl, Co, Cs, Fe, Mg, Mn, Na, Sc, Sr and Zn, were determined in all samples. The factor score of each sample was calculated for each factor by making use of principal component analysis in order to determine their origins. The results were compared with those by stable isotope analysis (13C and15N).

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Abstract  

Instrumental neutron activation analysis was applied to 80 samples from various African countries and 81 samples from the Kruger National Park in the Republic of South Africa. Twelve elements such as Br, Ca, Cl, Co, Cs, Fe, Mg, Mn, Na, Sc, Sr, and Zn, were determined in all samples. The factor scores of each sample were calculated from those elemental concentrations for the first and second factors to clarify the differences of samples from various African countries with those from Kruger Park. The results were compared with those by stable isotope analysis (13C and15N).

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Abstract  

The application of stable isotope analysis using neutron-induced prompt -ray analysis (PGA) with cold/thermal neutron beams for the tracer study of geological materials are discussed. Silicon has three natural isotopes differing in abundance:28Si (92.23%),29Si (4.67%) and30Si (3.10%). For the purpose of the assessment of Si migration in engineered barrier material, enriched30Si can be used as a tracer due to its nuclear and chemical properties. Isotope analysis of30Si was performed by PGA during the tracer study. Neutron intensity at the sample position was 1.4·108 n¢cm–2·s–1, 2.4·107 n·cm–2·s–1 for cold and themal neutron guided beams of JRR-3M, respectively. Calibration curves and analytical sensitivity of30Si were determined based on measurement of standard samples. BG and detection limits for30Si analysis were also measured in Japanese bentonite (Kunigel V1 and Kunipia F) and their pore water. Fiffteen elements were determined simultaneously using PGA.

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C. Trombini A.E. Fallick 2000 Use of compound-specific stable isotope analysis to source anthropogenic natural gas-derived polycyclic aromatic

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Al-Aasm, I.S., B.E. Taylor, B. South. 1990: Stable isotope analysis of multiple carbonate samples using selective acid extraction. — Chemical Geology, 80, pp. 119

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Community Ecology
Authors: U. Sommer, E. Charalampous, M. Scotti, and M. Moustaka-Gouni

North Atlantic: estimates derived from biovolume theories and stable isotope analysis . J. Plankton Res. 38 : 1364 – 1378 . Bedo , A. , L. Acuña , D. Robin and R. Harris

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. R.H. Tykot 2002 Contribution of stable isotope analysis to understanding dietary variation among the Maya K.A. Jakes

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-sized brachiopod populations) are decisive for the recognition of fossil/recent vents/seeps, as discussed by Callender and Powell ( 1992 ). Later, Bujtor ( 2007 ) initiated a stable isotope analysis and ruled out the seep origin but proposed a genetic model and

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Central European Geology
Authors: István Vető, Katalin Báldi, Stjepan Ćorić, Magdolna Hetényi, Attila Demény, and István Futó

. 1980 : Preparation of carbon dioxide for stable isotope analysis of petroleum fractions . – Analytical Chemistry , 52 , pp. 1389 – 1391 . 10.1021/ac50058a063 Švábenická

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