Assignment of bitter almond oil to natural and synthetic sources by stable isotope ratio analysis

Butzenlechner, Maria; Roßmann, A.; Schmidt, H.‐L.

doi:10.1021/jf00086a030

Cited by 45 publications

(29 citation statements)

References 6 publications

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“…3). The lower bound of the atomic-weight interval corresponds to hydrogen in natural gas [26], and the upper bound corresponds to benzaldehyde reagent produced by toluene catalytic oxidation [27]. The previous value of standard atomic weight, A r (H) = 1.007 94(7), recommended in 1981, was a Commission decision to expand the uncertainty to cover better the range of all terrestrial aqueous and gaseous sources of hydrogen [28].…”

Section: Hydrogenmentioning

confidence: 99%

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Atomic weights of the elements 2009 (IUPAC Technical Report)

Wieser

Coplen

2010

Pure and Applied Chemistry

244

151

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Abstract:The biennial review of atomic-weight determinations and other cognate data has resulted in changes for the standard atomic weights of 11 elements. Many atomic weights are not constants of nature, but depend upon the physical, chemical, and nuclear history of the material. The standard atomic weights of 10 elements having two or more stable isotopes have been changed to reflect this variability of atomic-weight values in natural terrestrial materials. To emphasize the fact that these standard atomic weights are not constants of nature, each atomic-weight value is expressed as an interval. The interval is used together with the symbol [a; b] to denote the set of atomic-weight values, A r (E), of element E in normal materials for which a ≤ A r (E) ≤ b. [204.382; 204.385] from 204.3833(2). This fundamental change in the presentation of the atomic weights represents an important advance in our knowledge of the natural world and underscores the significance and contributions of chemistry to the wellbeing of humankind in the International Year of Chemistry 2011. The standard atomic weight of germanium, A r (Ge), was also changed to 72.63(1) from 72.64(1).

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Section: Hydrogenmentioning

confidence: 99%

“…4). [14,15], taking into account [27]). Isotopic reference materials are designated by solid black circles.…”

Section: Lithiummentioning

confidence: 99%

Atomic weights of the elements 2009 (IUPAC Technical Report)

Wieser

Coplen

2010

Pure and Applied Chemistry

244

151

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“…Among the innovative methods for authenticity control and origin assignment of foods and beverages, stable isotope ratio analysis has gained remarkable importance within the last years for the quality assessment of wine, spirits, fruit juices, flavours, oils, honey and maple syrup [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. For the analysis of wine, the first officially adopted stable isotope method in the EU was the determination of the site-specific D/H ratio by NMR for wine ethanol, mainly to provide evidence of the addition of beet sugar [3].…”

Section: Introductionmentioning

confidence: 99%

Stable oxygen isotope content of water of EU data-bank wines from Italy, France and Germany

Roßmann

Reniero²,

Moussa³

et al. 1999

Zeitschrift f�r Lebensmitteluntersuchung und -Forschung A

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The application of oxygen isotope analysis to wine water (according to EU regulation no. 822/97) to determine a wine's origin, and check that it has not been adulterated is gaining increasing importance in both laboratories and industry. Using samples of Italian, French and German wines from the EU wine data bank (EU-DB), good agreement between the results from participating laboratories was demonstrated. Close correlations between the oxygen isotope contents of must and related wine water were found for samples from all countries. Based on the results of the d 18 O values for EU-DB wines from 1991 to 1996 from Italy, France and Germany, we describe and discuss the main factors which are responsible for the variation of the oxygen isotope ratios of wine water. The examination of spiked samples demonstrated the usefulness of d 18 O analysis for the detection of the watering down of wine. The possibility of origin assignment, preferably if the determination of the d 18 O value by isotope ratio mass spectrometry (IRMS) is employed together with the determination of the site-specific hydrogen isotope content of wine ethanol by 2 H-NMR and the measurement of d 13 C values of ethanol by IRMS, is outlined.

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“…Atomic weights calculated from published variations in isotopic abundances for some elements can span relatively large intervals. For example, the atomic weight of hydrogen in normal materials (its standard atomic weight) spans the interval from 1.007 84 to 1.008 11 [8][9][10], whereas the uncertainty of the atomic weight calculated from the best measurement of the isotopic abundance of hydrogen is ±0.000 000 05 [11,12], which is approximately 5000 times smaller than the difference between the lower and higher bounds. The Subcommittee's reports formed the basis of the Commission's decision in 2009 to express the standard atomic weight of ten elements (hydrogen, lithium, boron, carbon, nitrogen, oxygen, silicon, sulfur, chlorine, and thallium) as intervals to indicate that standard atomic weights are not always constants of nature [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…1-12), a substance is needed whose isotopic abundance is well known and whose isotope-delta value is also well known relative to the isotope-delta scale. Commonly this substance is an isotopic reference material that has served as the "best measurement" for determination of isotopic abundance [10]. For example, consider hydrogen, shown in Fig [9,13]).…”

Section: Introductionmentioning

confidence: 99%

Isotope-abundance variations and atomic weights of selected elements: 2016 (IUPAC Technical Report)

Coplen

Shrestha

2016

Pure and Applied Chemistry

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There are 63 chemical elements that have two or more isotopes that are used to determine their standard atomic weights. The isotopic abundances and atomic weights of these elements can vary in normal materials due to physical and chemical fractionation processes (not due to radioactive decay). These variations are well known for 12 elements (hydrogen, lithium, boron, carbon, nitrogen, oxygen, magnesium, silicon, sulfur, chlorine, bromine, and thallium), and the standard atomic weight of each of these elements is given by IUPAC as an interval with lower and upper bounds. Graphical plots of selected materials and compounds of each of these elements have been published previously. Herein and at the URL http://dx.doi. org/10.5066/F7GF0RN2, we provide isotopic abundances, isotope-delta values, and atomic weights for each of the upper and lower bounds of these materials and compounds.

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Assignment of bitter almond oil to natural and synthetic sources by stable isotope ratio analysis

Cited by 45 publications

References 6 publications

Atomic weights of the elements 2009 (IUPAC Technical Report)

Atomic weights of the elements 2009 (IUPAC Technical Report)

Stable oxygen isotope content of water of EU data-bank wines from Italy, France and Germany

Isotope-abundance variations and atomic weights of selected elements: 2016 (IUPAC Technical Report)

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