7900 ICP-MS P/A Tune

Question

Hi everybody, 
 
 When you are running the P/A tuning solution on the 7900 ICP-MS do you select all the masses in the P/A tune solution or do you just use the masses form the method that you are using. 
 
 Thanks.

edgarvs · Answer

Hi, The p/a tuning applies for the elements in the method that could be run above the pulse measurement. So if only the elements in the method are selected in the p/a tuning it should be enough. Running more elements, beside the elements of intrest, in the p/a adjustment makes the quality in general not beter. The p/a factor adjustment in the batch, that run automatically the p/a factor, is also a very good, automated and fast tool to adjust the p/a factor for the elements of intrest. cheers edgar

edgarvs · Answer

Hi Matt, 
 
 if there is no p/a factor found for the mass selected in the p/a factor adjustment list due to low sensitivity then a interpolation is preformed. 
 The best approach to adjust for analog measurement (if applicable) is use the unique p/a function in the batch. Then all the masses measured in the method are calculated for the p/a (when the sensitivity is enough). it's not possible to do an offline adjustment or recalculation for the p/a factor. The p/a factor is stored onto the icpms hardware and is read out into the batch when needed. in the report function in the offline DataAnalysis could the for the batch applicable p/a factor be found.

7900 ICP-MS P/A Tune

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