Results 11 to 20 of about 70,737 (245)

Application of the Data on δ¹³C and δ¹⁸O of Carbonates for the Study of Unconventional Reservoirs on the Example of the Bazhenov Source Rocks, Western Siberia, Russia

Geosciences, 2021
This paper addresses potential application of data on stable carbon and oxygen isotope composition of carbonates for study of organic rich source rocks on the example of the Late Jurassic–Early Cretaceous Bazhenov Formation (West Siberian petroleum basin,
Anna Yurchenko, Andrey Voropaev, Elena Kozlova, Nikita Morozov, Mikhail Spasennykh   +4 more
doaj   +1 more source

A view of the European carbon flux landscape through the lens of the ICOS atmospheric observation network [PDF]

Atmospheric Chemistry and Physics, 2023
The ICOS (Integrated Carbon Observation System) network of atmospheric measurement stations produces standardized data on greenhouse gas concentrations at 46 stations in 16 different European countries (March 2023).
I. Storm, U. Karstens, C. D'Onofrio, A. Vermeulen, A. Vermeulen, W. Peters, W. Peters   +6 more
doaj   +1 more source

Study on Separation of Polycyclic Aromatic Hydrocarbons in Soils for Compound-specific Carbon Isotope Analysis

Yankuang ceshi, 2021
BACKGROUND Tracing the source of polycyclic aromatic hydrocarbons (PAHs) by the compound-specific carbon isotope is becoming increasingly popular. For precise carbon isotope analysis, a pretreatment process is required to reduce co-outflow and unresolved
XIE Man-man, LIU Mei-mei, WANG Shu-xian, LING Yuan, SUN Qing   +4 more
doaj   +1 more source

Limited evidence of C4 plant consumption in mound building Macrotermes termites from savanna woodland chimpanzee sites.

PLoS ONE, 2021
Stable isotope analysis is an increasingly used molecular tool to reconstruct the diet and ecology of elusive primates such as unhabituated chimpanzees.
Seth Phillips, Rudolf H Scheffrahn, Alex Piel, Fiona Stewart, Anthony Agbor, Gregory Brazzola, Alexander Tickle, Volker Sommer, Paula Dieguez, Erin G Wessling, Mimi Arandjelovic, Hjalmar Kühl, Christophe Boesch, Vicky M Oelze   +13 more
doaj   +1 more source

Latest Permian carbonate carbon isotope variability traces heterogeneous organic carbon accumulation and authigenic carbonate formation [PDF]

Climate of the Past, 2017
Bulk-carbonate carbon isotope ratios are a widely applied proxy for investigating the ancient biogeochemical carbon cycle. Temporal carbon isotope trends serve as a prime stratigraphic tool, with the inherent assumption that bulk micritic carbonate ...
M. Schobben, M. Schobben, S. van de Velde, J. Gliwa, L. Leda, D. Korn, U. Struck, U. Struck, C. V. Ullmann, V. Hairapetian, A. Ghaderi, C. Korte, R. J. Newton, S. W. Poulton, P. B. Wignall   +14 more
doaj   +1 more source

The Feasibility Study of Separating Carbon Isotope by Gas Diffusion Method Using Ethanol as Processing Gas

Journal of Isotopes, 2022
As a marker for isotope tracing technology, carbon-13 is widely used and the market demand is on the rise. In order to explore the separation method of carbon-13 isotope, a gas diffusion separation experiment using ethanol as the processing gas was ...
LI Junjie;PAN Jianxiong;ZHOU Mingsheng;JIANG Dongjun;WANG Fei
doaj   +1 more source

Carbon and Oxygen Isotope Analysis of Calcite and Dolomite Mixtures Using Selective Acid Extraction by Gasbench-IRMS [PDF]

Zhipu Xuebao, 2022
Carbonate cements formed at different stages in sandstone have different mineral compositions, structural characteristics and carbon and oxygen isotope compositions.
HAN Juan, LIU Han-bin, JIN Gui-shan, ZHANG Jian-feng, LI Jun-jie, ZHANG jia, SHI Xiao   +6 more
doaj   +1 more source

A dataset representing the impact of aromatic nuclei on the carbon isotope of gases

Data in Brief, 2020
This work presents a dataset which provides information on the influence of aromatic nuclei on the carbon isotope of gases. Gases analyzed herein were obtained by pyrolysis of model compounds and kerogens.
Yanhong Liu, Yingqin Wu, Yanqing Xia, Lantian Xing, Chuntao Tian, Tianzhu Lei   +5 more
doaj   +1 more source

Equations for lipid normalization of carbon stable isotope ratios in aquatic bird eggs. [PDF]

PLoS ONE, 2014
Stable isotope ratios are biogeochemical tracers that can be used to determine the source of nutrients and contaminants in avian eggs. However, the interpretation of stable carbon ratios in lipid-rich eggs is complicated because (13)C is depleted in ...
Kyle H Elliott, Mikaela Davis, John E Elliott   +2 more
doaj   +1 more source

Carbon isotope reversal of desorbed gas in Longmaxi shale of Jiaoshiba area, Sicuhan Basin

Petroleum Research, 2017
Through analysis of components and carbon isotope compositions of gas desorbed from shale cores, the carbon isotope reversal phenomenon in the shale gas from the Silurian Longmaxi Formation of Jiaoshiba area in Sichuan Basin were well studied.
Hua Qin, Xiaojun Fan, Ming Liu, Jingyu Hao, Bo Liang   +4 more
doaj   +1 more source