Matches in SemOpenAlex for { <https://semopenalex.org/work/W3085575824> ?p ?o ?g. }
Showing items 1 to 70 of
70
with 100 items per page.
- W3085575824 abstract "<p>An international project developed, quality-tested, and measured isotope&#8722;delta values of 10 new food matrix reference materials (RMs) for hydrogen, carbon, nitrogen, oxygen, and sulfur stable isotope-ratio measurements to support food authenticity testing and food provenance verification. These new RMs will enable users to normalize measurements of samples to isotope&#8722;delta scales. The RMs span a range of &#948;<sup>2</sup>H<sub>VSMOW</sub> values from &#8722;207.4 to &#8722;43.3 mUr or &#8240;, for &#948;<sup>13</sup>C<sub>VPDB</sub> from &#8722;30.60 to &#8722;13.72 mUr, for &#948;<sup>15</sup>N<sub>air</sub> from +1.78 to +14.96 mUr, for &#948;<sup>18</sup>O<sub>VSMOW</sub> from +18.20 to +26.33 mUr, and for &#948;<sup>34</sup>S<sub>VCDT</sub> from &#8722;20.25 to +17.49 mUr. The RMs include (i) a pair of honeys from Canada and tropical Vietnam, (ii) flours from C3 (rice) and C4 (millet) plants, (iii) four vegetable oils from C3 (olive, peanut) and C4 (corn) plants, and (iv) collagen powders from marine fish and terrestrial mammal origins. After thorough homogenization of the bulk materials, multiple aliquots were sealed in glass under vacuum or noble gas to exclude oxygen and to potentially extend the shelf life to decades when stored at &#8211;18 &#176;C in the dark. A total of six laboratories from five countries used various analytical approaches and instrumentation for two- or multiple-point isotopic normalization against international RMs. The use of reference waters and organic liquids in silver tubes allowed direct normalization of &#948;<sup>2</sup>H values of organic materials against isotopic reference waters following the principle of identical treatment, minimizing interference from atmospheric moisture. An errors-in-variables regression model that included the uncertainty associated with the measured and assigned values of the RMs was applied centrally to normalize results and obtain consensus values and measurement uncertainties reported here for new RMs USGS82 to USGS91. Because of exchangeable hydrogen and H<sub>2</sub>O in some RMs (especially in honeys, collagens, and flours), sample loading in contact with laboratory air and different types of pre-treatment can result in significant bulk &#948;<sup>2</sup>H variance. Utilization of these new RMs should foster mutual compatibility of &#948;<sup>2</sup>H values if harmonized technical/analytical approaches are followed and documented in data reports.</p>" @default.
- W3085575824 created "2020-09-21" @default.
- W3085575824 creator A5006132751 @default.
- W3085575824 creator A5010418005 @default.
- W3085575824 creator A5017614324 @default.
- W3085575824 creator A5017744908 @default.
- W3085575824 creator A5018514539 @default.
- W3085575824 creator A5021724270 @default.
- W3085575824 creator A5024022058 @default.
- W3085575824 creator A5053257911 @default.
- W3085575824 creator A5067874208 @default.
- W3085575824 creator A5071014735 @default.
- W3085575824 creator A5079769591 @default.
- W3085575824 creator A5082667605 @default.
- W3085575824 date "2020-03-23" @default.
- W3085575824 modified "2023-10-16" @default.
- W3085575824 title "Upcoming food matrix stable isotope reference materials from the USGS: honeys, vegetable oils, flours, and collagens" @default.
- W3085575824 doi "https://doi.org/10.5194/egusphere-egu2020-22332" @default.
- W3085575824 hasPublicationYear "2020" @default.
- W3085575824 type Work @default.
- W3085575824 sameAs 3085575824 @default.
- W3085575824 citedByCount "0" @default.
- W3085575824 crossrefType "posted-content" @default.
- W3085575824 hasAuthorship W3085575824A5006132751 @default.
- W3085575824 hasAuthorship W3085575824A5010418005 @default.
- W3085575824 hasAuthorship W3085575824A5017614324 @default.
- W3085575824 hasAuthorship W3085575824A5017744908 @default.
- W3085575824 hasAuthorship W3085575824A5018514539 @default.
- W3085575824 hasAuthorship W3085575824A5021724270 @default.
- W3085575824 hasAuthorship W3085575824A5024022058 @default.
- W3085575824 hasAuthorship W3085575824A5053257911 @default.
- W3085575824 hasAuthorship W3085575824A5067874208 @default.
- W3085575824 hasAuthorship W3085575824A5071014735 @default.
- W3085575824 hasAuthorship W3085575824A5079769591 @default.
- W3085575824 hasAuthorship W3085575824A5082667605 @default.
- W3085575824 hasConcept C104317684 @default.
- W3085575824 hasConcept C126322002 @default.
- W3085575824 hasConcept C134018914 @default.
- W3085575824 hasConcept C185592680 @default.
- W3085575824 hasConcept C2994266630 @default.
- W3085575824 hasConcept C512185932 @default.
- W3085575824 hasConcept C55493867 @default.
- W3085575824 hasConcept C71924100 @default.
- W3085575824 hasConcept C86803240 @default.
- W3085575824 hasConceptScore W3085575824C104317684 @default.
- W3085575824 hasConceptScore W3085575824C126322002 @default.
- W3085575824 hasConceptScore W3085575824C134018914 @default.
- W3085575824 hasConceptScore W3085575824C185592680 @default.
- W3085575824 hasConceptScore W3085575824C2994266630 @default.
- W3085575824 hasConceptScore W3085575824C512185932 @default.
- W3085575824 hasConceptScore W3085575824C55493867 @default.
- W3085575824 hasConceptScore W3085575824C71924100 @default.
- W3085575824 hasConceptScore W3085575824C86803240 @default.
- W3085575824 hasLocation W30855758241 @default.
- W3085575824 hasOpenAccess W3085575824 @default.
- W3085575824 hasPrimaryLocation W30855758241 @default.
- W3085575824 hasRelatedWork W11955504 @default.
- W3085575824 hasRelatedWork W13081436 @default.
- W3085575824 hasRelatedWork W14460215 @default.
- W3085575824 hasRelatedWork W15472123 @default.
- W3085575824 hasRelatedWork W2150761 @default.
- W3085575824 hasRelatedWork W23206792 @default.
- W3085575824 hasRelatedWork W3748346 @default.
- W3085575824 hasRelatedWork W5862509 @default.
- W3085575824 hasRelatedWork W6705236 @default.
- W3085575824 hasRelatedWork W8305241 @default.
- W3085575824 isParatext "false" @default.
- W3085575824 isRetracted "false" @default.
- W3085575824 magId "3085575824" @default.
- W3085575824 workType "article" @default.