Would like to add Li and Bi to anaylates being tested and having a difficulty narrowing down an ISTD element to put in for its correction. Does anyone have any suggestions?
Is your question related to ICP-MS?
6Li could be a choice as ISTD for 209Bi. However, the best approach is to choose a ISTD mass close to 209Bi. even better is the element what is not in the samples and has approximately the same ionization potential as the 209Bi. For example, the Tl could be a good choice. Recommended is to take more than one ISTD element and check the recovery of the element Bi with the different ISTD elements during the run for multiple matrix samples.
good luck with the ISTD optimization.
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