Average isotopic ratios for reference minerals
Development of analytical methods and standard reference materials for analysis of trace elements and isotopic ratios in sulphides
... characterised reference materials (RMs) for LA-ICP-MS, used for the determination of the platinum-group elements (PGE) and Au in a sulphide matrix, were analysed and compared: 8b, PGE-A, NiS-3, Po727-T1, Po724-T ...
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Update on REIMEP-15: Isotopic Ratios of uranium in UF6
... the isotopic composition of uranium hexafluoride is essential to plant operators for closing their material balance, for meeting the specifications of their customers and for economical ...
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Last Glacial Maximum and deglacial abyssal seawater oxygen isotopic ratios
... An average core does not exist in nature but provides a generic data set to discuss the methodology and ...the average core will be the same as averaging the controls of the individual cores – if the same ...
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Use of lead isotopic ratios as geographical tracer for Lambrusco PDO wines
... particular reference to their origin, in a univocal way [ 4 ...isotope ratios of stable light elements (H, C, N, O, and S) and heavy elements (Sr, Nd, and Pb) have been successfully used as tracers [ 7 ...
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Technical Note: A global database of the stable isotopic ratios of meteoric and terrestrial waters
... Among datasets published with manuscript tables or sup- plements, we have encountered a wide range of metadata completeness. Issues include but are not limited to missing latitudes and longitudes, geographic data ...
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Preparation and Certification of the Isotopic Reference Material IRMM-049d
... 5 the Pu isotope ratios. Three consecutive separations for each blend mixture were performed in order to obtain a purified Pu fraction and to avoid interferences with uranium coming from IRMM-1027m in mass ...
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Amino acid compositions in heated carbonaceous chondrites and their compound specific nitrogen isotopic ratios
... nitrogen isotopic values for individual amino acids in spite of the low amino acid concentrations and small sample ...of isotopic fractionation that might occur to other tech- ...With reference to ...
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Analysis of lead isotopic ratios of glass objects with the aim of comparing them for forensic purposes
... The interpretation of the relative location of the ECE curve (Fig. 2) in relation to the remaining two mentioned earlier illustrates the performance of the method of evidence evaluation. If the LR values of the evidence ...
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a. Average annual expense ratios* b. Percentage of all Vanguard funds outperforming the average returns of their peer groups**
... This document contains links to materials which may have been prepared in the United States and which may have been commissioned by the Vanguard Entities. They are for your information and reference only and they ...
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Variability Analyses of Alfalfa-Reference to Grass-Reference Evapotranspiration Ratios in Growing and Dormant Seasons
... year. Average standard deviation between years was maximum ...hypothetical reference conditions are usually not met during this period in most ...o ratios calculated with the ASCE-PM method is ...
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The IRHUM (Isotopic Reconstruction of Human Migration) database – bioavailable strontium isotope ratios for geochemical fingerprinting in France
... Sr isotopic ratios of natural materials reflect the sources of strontium available during their forma- ...robust reference maps to evaluate the source of strontium isotope ratios measured in ...
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U–Th isotopic microanalysis of zircon reference materials and KBSI working standards
... Th isotopic analysis using a laser ablation multiple collector inductively coupled plasma mass spectrometer (LA-MCICPMS), we estimated the homogeneity of four reference zircons (91500, TEMORA 2, FC1, and ...
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Influence of fermentation water on stable isotopic D/H ratios of alcohol obtained from concentrated grape must
... H ratios measured using IRMS were expressed as delta per thousand (δ 18 O and δ 2 H %), as the deviation of the isotope ratio of the sample from the V-SMOW (Vienna-Standard Mean Ocean Water, IAEA-International ...
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Calibration and correction of LA-ICP-MS and LA-MC-ICP-MS analyses for element contents and isotopic ratios
... and isotopic ratio, the state-of-the-art technique combines the advantages of low detection limits with high spatial resolution, however, the analysis accuracy and precision are restricted by many factors, such as ...
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Preparation and Certification of uranium QUAD isotopic reference materials IRMM-3100 and IRMM-3102
... isotope ratios n( 234 U)/n( 236 U), n( 235 U)/n( 236 U) and n( 238 U)/n( 236 U) were determined by thermal ionization mass spectrometry, using the n( 233 U)/n( 236 U) ratio for internal mass fractionation ...
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High-precision isotopic characterization of USGS reference materials by TIMS and MC-ICP-MS
... Pb isotopic compositions (Table 5, Figure 5c) is strongly related to whether or not the rock powder was completely and properly ...in isotopic composition between the samples dis- solved by hotplate ...
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EEG COHERENCE AND PHASE DELAYS: COMPARISONS BETWEEN SINGLE REFERENCE, AVERAGE REFERENCE AND CURRENT SOURCE DENSITY
... signal-to-noise ratios based on mixtures of sine waves and random ...ears reference, single or a common reference, average reference and the Laplacian ...an average ...
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Average Price Ratios
... price ratios don’t match the price ratios from my fund ...calculating average price ...weighted average, while others use the harmonic average, a trimmed mean, a median by market value, ...
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Isotopic Ratios In Titanʼs Atmosphere: Clues and Challenges
... the quantum yield of R2 and R3 at Lyman- R were given values of 0.41 and 0.51, respectively, on the basis of their measurement of the H atom quantum yield from methane photolysis in conj[r] ...
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Oxygen and Hydrogen Isotope Ratios in Sedimentary Rocks and Minerals
... The clay mineral suites of the ocean sediments cannot therefore be interpreted as being entirely composed of minerals in isotopic equilibrium with sea water or w[r] ...
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