scholarly journals Yearly decrease of carbon stable isotope ratio in narrow-ridged finless porpoises of Ise and Mikawa Bay, central Japan

2021 ◽  
Author(s):  
AYUMU FURUYAMA ◽  
TAIGA YODO ◽  
NORIKO FUNASAKA ◽  
IKUO WAKABAYASHI ◽  
TATSUYA OIKE ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Stable Isotope Ratio ◽  
Carbon Stable Isotope ◽  
Central Japan ◽  
Carbon Stable Isotope Ratio

Determination of glycerol carbon stable isotope ratio for the characterization of Italian balsamic vinegars

2018 ◽  
Vol 69 ◽  
pp. 33-38
Author(s):  
Simona Sighinolfi ◽  
Ilaria Baneschi ◽  
Simona Manzini ◽  
Lorenzo Tassi ◽  
Luigi Dallai ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Stable Isotope Ratio ◽  
Carbon Stable Isotope ◽  
Carbon Stable Isotope Ratio

scholarly journals Variability in carbon stable isotope ratio of heterotrophic respiration in a deciduous needle-leaf forest

2008 ◽  
Vol 113 (G1) ◽  
pp. n/a-n/a ◽  
Author(s):  
Yoshiyuki Takahashi ◽  
Naishen Liang ◽  
Ryuichi Hirata ◽  
Toshinobu Machida ◽  
Yasumi Fujinuma
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Stable Isotope Ratio ◽  
Heterotrophic Respiration ◽  
Carbon Stable Isotope ◽  
Carbon Stable Isotope Ratio

scholarly journals Carbon stable isotope ratio as a revealer of incomplete decarbonation for particulate organic carbon measurement in river plumes

2021 ◽  
Vol 41 (1) ◽  
Author(s):  
Thierry Blasco ◽  
Christophe Migon ◽  
Guillaume Morin ◽  
Aurélie Dufour ◽  
Nathalie Vigier ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Organic Carbon ◽  
Particulate Organic Carbon ◽  
Coastal Waters ◽  
Isotope Ratio ◽  
Stable Isotope Ratio ◽  
Carbon Stable Isotope ◽  
River Plumes ◽  
Carbon Stable Isotope Ratio ◽  
The Impact

AbstractThe characterization of particles in suspension in river plumes contributes to the assessment of net particulate organic carbon (POC) fluxes and to a better understanding of the anthropogenic and climatic impact on blue carbon. Prior to POC analysis in natural waters, inorganic carbon (in the form of carbonates) must be removed. This step is generally carried out by acid leaching. However, the presence of mineral matrices (in turbid waters) may hinder total decarbonation, which may result in biased measurements. This work checks the quality of decarbonation through the analysis of carbon stable isotope ratio (δ13C), considering suspended particles discharged by three rivers into coastal waters under flooding conditions. Carbonates were removed by adding variable volumes of 2N hydrochloric acid (HCl) to filters. Carbon concentrations and stable isotopic ratios were analyzed. Values of δ13Corg (stable isotope ratio of organic carbon) allow the identification of incompletely decarbonated samples. If a small amount of detrital carbonates resists the usual decarbonation treatment, δ13Corg can be significantly shifted towards less negative values, suggesting the need of more efficient decarbonation methods in order to improve the accuracy of organic carbon measurements. Even in the case of a high Corg/Ctotal ratio, the impact of remaining carbonates on the δ13Corg value is strong because δ13Cinorg is significantly different. The sensitivity of δ13Corg measurement might therefore be used to validate POC measurements in estuarine and coastal waters.

Carbon stable isotope ratio of phloem sugars in mature pine trees throughout the growing season: comparison of two extraction methods

2009 ◽  
Vol 23 (16) ◽  
pp. 2511-2518 ◽  
Author(s):  
Marion Devaux ◽  
Jaleh Ghashghaie ◽  
Didier Bert ◽  
Catherine Lambrot ◽  
Arthur Gessler ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Growing Season ◽  
Extraction Methods ◽  
Stable Isotope Ratio ◽  
Carbon Stable Isotope ◽  
Pine Trees ◽  
Carbon Stable Isotope Ratio

CCQM-K140: carbon stable isotope ratio delta values in honey

Metrologia ◽  
2017 ◽  
Vol 54 (1A) ◽  
pp. 08005-08005 ◽  
Author(s):  
P J H Dunn ◽  
H Goenaga-Infante ◽  
A C Goren ◽  
A Şimşek ◽  
M Bilsel ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Ratio ◽  
Stable Isotope Ratio ◽  
Carbon Stable Isotope ◽  
Carbon Stable Isotope Ratio
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