Colleagues
I'm trying to determine a concentration of isododecane in one of the products. I prepared a standard solution of isododecane in dichloromethane. The concentration was high, about 1% wt. However, I don't see any peaks even at the very broad scanning range.
Agilent 7890A/6975 MSD
Splitless. 1 ul inj volume. 70Cx1min-20C/min-280Cx4min.
DB-HeavyWax column. 30mx0.25
At these conditions I see few residual peaks from DCM (as compared to pure DCM) but not the C12H26. What could go wrong?
Thnx
Dear Kyril
I didn’t work with isododecane specifically, but I usually use alkanes mix as RI standards during the analysis that is performed with non-polar column. Maybe in you polar column retention is very low, so you just miss it?
Thanks, Albert. Yes, it seems that retention times are super low and I had to start with 40C oven
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