Peak Qualifier results are missing in OLIR

Question

In the ChemStation calibration table you can set Peak Qualifiers when using multiple signals. The ratio of the signals is calculated and compared for each compound. In the classic report this is then used also for peak identification.

I tried building this using Intelligent Reporter but failed to do this for a flexible number of compounds.

As the result is actually available in the chromres object (compound table, IsQualified column) it could "easily" be copied to a compound custom field and then used in OLIR. Unfortunately I am not good enough at macros to actually do this, so if anybody could do it from me that would be highly appreciated. I can provide an adequate sequence.

(originally posted in OpenLAB Forum: https://zohodiscussions.com/openlabcdsforum#Topic/68030000000046003

2012 October 25

by schoeler)

testuser2 · Accepted Answer

Hi M., I've created a small template that could be developed further to an alternative solution. I'm using a category aggregator to calculate area and response ratio. That part is easy, as you said. For peak purity qualification or peak identification I would calibrate with "calculate signals seperatly" quantify each compound in all signals calculate the rel. standard deviation of the amount column. If the peak is pure from a spectra purity perspective, the RSD% of this simultanious quantfication should be < 0,5 %. This could be used as a warning trigger. The warning level needs to be adjusted to the concentration range of the method. If the qualifier signal is very noise, the amount RSD is certainly higher.