Solution to data integration problems during isotope ratio measurements by magnetic sector inductively coupled plasma mass spectrometer at medium mass resolution: application to the certification of an enriched 53Cr material by isotope dilution

Assessment of international reference materials for isotope-ratio analysis (IUPAC Technical Report)

“…Reproducibility of a local laboratory reference solution has been reported to be as low as 0.024 ‰ [174]. IRMM-625 is a Cr) = 23.95 [175].…”

Method of standard additions for arsenic measurements in water by ICP sector field mass spectrometry at accuracy comparable to isotope dilution

“…Full integration across the mass peak, (see also ref. 48 for comparison) at least up to half percent of the peak value, was found essential for acceptable accuracy of the signal ratio measurements. The results can aid higher accuracy of the measurements of other monoisotopic elements, study of the matrix effects and applications of the method of additions in general.…”

Isotope dilution with ICP-MS—simplified uncertainty estimation using a robust procedure based on a higher target value of uncertainty

“…Uncertainty evaluations were performed using the basic approach (Approach A) described in the Theoretical section with a priori estimates of uncertainty for the important components and with tolerance windows for the measurement parameters. This is compared with the detailed approach 12 (Approach B) that uses detailed uncertainty budgets fully based on all known components and the experimental uncertainties for the measurement parameters-shown in Table 5 for Ni. For comparison, results using Approach A are also listed in Table 5.…”