The quality of the separation is only limited by the number of precipitation repetitions. Moreover, the applicability of quadrupole-based ICP-MS for the characterisation of samples with respect to their origin by means of Sr isotope ratio determination was demonstrated.
The robustness of the CGM approach was illustrated for gypsum samples with trace strontium concentration and its general applicability to the determination of sulphur isotope ratios by means of quadrupole-based ICP-MS was demonstrated using the example of sulphur in gypsum.
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