Name: 2. [5 pts] A GC chromatogram shows some serious tailing on a peak. You decrease the split ratio, and the tailing is no longer a problem. What was the likely cause of the tailing, and why did decreasing the split ratio fix it? Solution By decreasing the split ratio,the column overload on the stationary phase side can be reduced or controlled which is the main cause of tailing. This is why decreasing split ratio will fix the tailing problems most of the times. Tailing is caused when few places on the stationary phase i.e point at which solid should get adsorbed actually retains the solute in higher fractions when compared to other sites in mobile phase which is indeed encouraged .

1. Name: 2. [5 pts] A GC chromatogram shows some serious tailing on a peak. You decrease the
split ratio, and the tailing is no longer a problem. What was the likely cause of the tailing, and
why did decreasing the split ratio fix it?
Solution
By decreasing the split ratio,the column overload on the stationary phase side can be reduced or
controlled which is the main cause of tailing.
This is why decreasing split ratio will fix the tailing problems most of the times.
Tailing is caused when few places on the stationary phase
i.e point at which solid should get adsorbed actually retains the solute in higher fractions when
compared to other sites in mobile phase which is indeed encouraged