Sentence examples for mass fractionation of from inspiring English sources

Because these values are the closest to the recommended values in (Wasserburg et al. 1981), we hereafter use 1.0851 and 0.22249 as the (147Sm/149Sm true and (144Sm/149Sm true ratios for correcting mass fractionation of Sm and calculating its isobaric contribution to 144Nd.

The reservoir effect can be evaluated by the measured natural mass fractionation of the stable isotope δ13C, which in skull A is −18.5 ‰ (Table 1).

Sensitivities and mass fractionation factors of the spectrometer were determined by measuring the known amounts of atmospheric gas and a He-standard gas with a 3He/4He ratio of 1.71 × 10−4.

Numerical methods, adapted from Galer [ 28], were used to identify spike compositions that provide near-optimal (~90o) intersection angles between the mass fractionation vectors of spiked and unspiked samples, as well as minimal error magnification factors over a wide range of spike-sample ratios.

Various authors have considered the existence of a mass fractionation relationship between the isotopic compositions of solar and planetary noble gases, for example correlations between isotopic compositions of planetary and solar neon and xenon.

Sometimes a set of samples will form from a single reservoir but with each one having experienced a different degree of mass fractionation.

For oxygen subjected to mass fractionation the percentage change of the ratio 18O/16O should be twice that in the ratio 17O/16O.

Internal normalization of mass fractionation is not available for Lu, because it has only two natural isotopes (175Lu and 176Lu).

These cases can be removed by using expensive high resolution MS. Other ways to reduce interferences include using of desolvation nebulizer and chromatographic separation of the analyte from the matrix prior to introduction into the MS. This separation is also necessary to prevent the additional effects of mass fractionation connected with the matrix effect.

Mass spectroscopic analysis of human serum following molecular mass fractionation, demonstrated that the majority of LMM biomarkers exist bound to carrier proteins.

Even there, nonlinearities of the detection system or mass fractionation can account for errors in the determination of isotope fractions.