scholarly journals Isotope Analysis (13C, 18O) of Wine From Central and Eastern Europe and Argentina, 2008 and 2009 Vintages: Differentiation of Origin, Environmental Indications, and Variations Within Countries

2021 ◽  
Vol 5 ◽  
Author(s):  
Micha Horacek ◽  
Nives Ogrinc ◽  
Dana Alina Magdas ◽  
Daniel Wunderlin ◽  
Sanja Sucur ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Eastern Europe ◽  
Central And Eastern Europe ◽  
Adriatic Sea ◽  
Isotope Composition ◽  
Isotope Analysis ◽  
Eastern European ◽  
Stable Isotope Composition ◽  
Weather Situation ◽  
Similarities And Differences

In this study, we compare the stable isotope composition of oxygen and carbon of wines from four Central and Southeastern European countries and from Argentina to study the similarities and differences in the isotope signatures and, thus, the potential of differentiation of the various wine-growing countries. We observe similar trends for wines from Austria, Slovenia, and Romania with respect to the vintages 2008 and 2009, which are absent in the Montenegrin and Argentinean samples. It is speculated that the weather develops similarly for Austria, Slovenia, and Romania, as these countries are positioned at a similar latitude and not too far away from each other (general central and eastern European weather situation), whereas Montenegro is not influenced by the latter being situated farther south and dominantly influenced by the Adriatic Sea. Investigations on further vintages are needed to test this assumption.

Precise isotope analysis of tellurium by inductively coupled plasma mass spectrometry using a double spike method

2018 ◽  
Vol 33 (7) ◽  
pp. 1233-1242 ◽  
Author(s):  
Yusuke Fukami ◽  
Jun-Ichi Kimura ◽  
Katsuhiko Suzuki
Keyword(s):  
Mass Spectrometry ◽  
Stable Isotope ◽  
Inductively Coupled Plasma ◽  
Isotope Composition ◽  
Isotope Analysis ◽  
Stable Isotope Composition ◽  
Inductively Coupled ◽  
Analytical Protocol ◽  
Plasma Mass Spectrometry ◽  
Sample Aliquot

We present an analytical protocol to determine the Te/Se ratio and stable isotope composition of Te from a single sample aliquot.

scholarly journals Interactive effects of urea and lipid content confound stable isotope analysis in elasmobranch fishes

2017 ◽  
Vol 74 (3) ◽  
pp. 419-428 ◽  
Author(s):  
Aaron B. Carlisle ◽  
Steven Y. Litvin ◽  
Daniel J. Madigan ◽  
Kady Lyons ◽  
Jennifer S. Bigman ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Lipid Content ◽  
Isotope Composition ◽  
North Pacific Ocean ◽  
Lipid Extraction ◽  
Isotope Analysis ◽  
Interactive Effects ◽  
Stable Isotope Composition ◽  
Elasmobranch Fishes

Stable isotope analysis (SIA) is becoming a commonly used tool to study the ecology of elasmobranchs. However, the retention of urea by elasmobranchs for osmoregulatory purposes may bias the analysis and interpretation of SIA data. We examined the effects of removing urea and lipid on the stable isotope composition of 14 species of sharks, skates, and rays from the eastern North Pacific Ocean. While effects were variable across taxa, removal of urea generally increased δ15N and C:N. Urea removal had less influence on δ13C, whereas extracting urea and lipid generally increased δ15N, C:N, and δ13C. Because C:N values of nonextracted tissues are often used to infer lipid content and adjust δ13C, shifts in C:N following urea extraction will change the inferred lipid content and bias any mathematical adjustment of δ13C. These results highlight the importance of urea and lipid extraction and demonstrate the confounding effects of these compounds, making it impossible to use C:N of non-urea-extracted samples as a diagnostic tool to estimate and correct for lipid content in elasmobranch tissues.

scholarly journals ON IMPACT OF THE BONE TYPE ON THE RESULTS OF PALEODIET RECONSTRUCTIONS ON THE BASIS OF THE STABLE ISOTOPE ANALYSIS

2021 ◽  
pp. 188-198
Author(s):  
М. А. Самородова
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Isotope Analysis ◽  
Isotope Ratios ◽  
Stable Isotope Composition ◽  
Different Types ◽  
Archaeological Materials ◽  
Isotope Study ◽  
Isotope Studies ◽  
Stable Isotope Study

Анализ стабильных изотопов азота и углерода активно применяется в палеодиетических реконструкциях археологического материала. Однако на результаты изотопного исследования могут повлиять существующие отличия в соотношениях изотопов разных типов костей одного индивида, которые могут возникать из-за разницы в скорости ремоделирования (разрушение старой кости и образование новой) различных костей скелета. Данные отличия часто не учитываются при выборе образцов для проведения изотопного исследования. Таким образом, перед настоящей статьей ставятся следующие задачи. Во-первых, показать существование разницы в изотопных соотношениях костей скелета на основе материалов, представленных древнерусским сельским населением из могильника Шекшово 9 в Суздальском Ополье (X-XII вв.). И, во-вторых, предоставить основные рекомендации при отборе проб для изучения изотопного состава археологических материалов. В ходе исследования удалось установить, что при выборе образцов для проведения изотопного анализа следует отдавать предпочтения костям со схожей скоростью ремоделирования. The analysis of stable nitrogen and carbon isotopes is actively used in paleodiet reconstructions of archaeological materials. However, the results of the stable isotope study can be affected by differences in the isotope ratios of collagen in different types of bones of the same individual. This can arise due the different speed of remodeling (the process by which osteoclasts breakdown the tissue in bones and new bones form) of various bones in the skeleton. These differences are often disregarded when selecting samples for isotope studies. Therefore, this paper is intended to address the following tasks: (i) to show that there exists difference in the isotope ratios of the skeleton bones by analyzing human remnants of the Medieval Russia rural population from the Shekshovo-9 cemetery in Suzdal Opolye (10th-12th centuries); (ii) to provide basic recommendations for selecting samples for the studies of the stable isotope composition of archaeological materials. Our research evidences that. when selecting samples for the isotope analysis. preference should be given to the bones with similar remodeling speed.

Seasonal differences of stable isotope composition and lipid content in four bivalve species from the Adriatic Sea

2014 ◽  
Vol 10 (6) ◽  
pp. 625-634 ◽  
Author(s):  
Daria Ezgeta-Balić ◽  
Sonja Lojen ◽  
Tadej Dolenec ◽  
Petra Žvab Rožič ◽  
Matej Dolenec ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Lipid Content ◽  
Adriatic Sea ◽  
Isotope Composition ◽  
Bivalve Species ◽  
Stable Isotope Composition ◽  
Seasonal Differences

scholarly journals Chemical and stable isotope composition of surface and groundwater in the surroundings of the Los Humeros Caldera, Puebla, Mexico

2019 ◽  
Vol 98 ◽  
pp. 07013
Author(s):  
Thomas Kretzschmar ◽  
Matteo Lelli ◽  
Ruth Alfaro ◽  
Juan Ignacio Sanchez ◽  
Yann Rene Ramos
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Regression Line ◽  
Sustainable Use ◽  
Geothermal Reservoir ◽  
Maximum Temperature ◽  
Stable Isotope Composition ◽  
Local Fracture ◽  
Hydrogeological Model ◽  
Fracture Systems

It is important to develop a regional hydrogeological model to identify possible recharge and discharge areas for a sustainable use of a geothermal reservoir. The Los Humeros geothermal area is situated within five surficial watersheds and coveres an area of more than 15.000 km2. A total of 208 well and spring samples were collected between June 2017 and November 2018. The stable isotope data for this region define a regression line of δDH2O = 8.032·δ18O + 12 and indicate that groundwater is recharged by regional precipitation. At least 39 groundwater wells, with a maximum temperature of 35 °C, show temperatures above the reported mean average surface temperature of 15 °C. Characteristic elements for geothermal reservoir fluids (B, Li, As) are also present in these groundwaters, indicating a possible connection between the reservoir fluid and the local groundwater through local fracture systems. Concentration of B in these hot wells is between 150 and 35000 ppb.

scholarly journals Trophic Relationships and Habitat Preferences of Delphinids from the Southeastern Brazilian Coast Determined by Carbon and Nitrogen Stable Isotope Composition

PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e82205 ◽  
Author(s):  
Tatiana Lemos Bisi ◽  
Paulo Renato Dorneles ◽  
José Lailson-Brito ◽  
Gilles Lepoint ◽  
Alexandre de Freitas Azevedo ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Habitat Preferences ◽  
Trophic Relationships ◽  
Brazilian Coast ◽  
Stable Isotope Composition ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen
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