how to ignore the area of the compounds used for RRT

Hello,

You would need to do a custom calculation to get that result. See the example below. I show 2 ways to do the total area calculation. The first is using the peak status as a time reference the other is by the compound name. 

By Is time reference 

TotalAreaAdj Scope - Signal Type-Double

CurrentSignal.AllPeaks.Where(function(x) x.Compound_IsTimeReference  = False).Select(function(x) x.Peak_Area).Sum

OR

By compound name with the name as a separate CC to allow you to change it without editing the CC directly

CompName Scope - Sequence Type - String

"YOUR COMPOUND NAME"

TotalAreaAdj Scope - Signal Type-Double

CurrentSignal.AllPeaks.Where(function(x) x.Compound_Name.ToUpper()  <> GetStringCC("CompName")).Select(function(x) x.Peak_Area).Sum

Final calculation for either method

AreaPercentAdj Scope - Peak or Group Type - Double

Peak_Area / CurrentSignal.GetDoubleCC("TotalAreaAdj") * 100

Marty

Hi Marty,

Thank you very much for your answer. The "currentSignal.GetDoubleCC("TotalAreaAdj") does not give any value. Instead, I have used just "TotalAreaAdj" and it works. the final equation is "Peak_Area/TotalAreaAdj*100".

I really appreciate you help.

Thanks

Oihana

Hello,

Okay you may not have the scope setup correctly on the TotalAreaAdj as that worked on my CDS 2.7 system. It should not be an issue for single channel data but if you ever have results that have more than one signal you will need to look into that problem. 

Marty

Hi Marty,

We have a FID and an MS connected to the same system. We only want to acquire the signal of FID, but if we want to report the method parameters we are “forced” to acquire both (we do not really know why and we have already ask the question to the support team).  To "solve" the problem, we have set up a solvent delay equal to the run time of the chromatogram and apparently we do not get any MS signal channel. But it seems, we are getting signal at the back…

Going back to the issue, I think I need to modify the CC to include the “FID1B” signal somewhere. I will work on that.

Thank you very much,

Oihana

Hi Marty,

We have a FID and an MS connected to the same system. We only want to acquire the signal of FID, but if we want to report the method parameters we are “forced” to acquire both (we do not really know why and we have already ask the question to the support team).  To "solve" the problem, we have set up a solvent delay equal to the run time of the chromatogram and apparently we do not get any MS signal channel. But it seems, we are getting signal at the back…

Going back to the issue, I think I need to modify the CC to include the “FID1B” signal somewhere. I will work on that.

Thank you very much,

Oihana