Linearity, response factor, splitless
Posted: Fri Mar 07, 2014 6:19 pm
Hi,
I was wondering why I would observe good linearity for one sample, A, and poor linearity for another, B. Both are injected in the same solution ranging from 3ppm to 0.5ppm.
A elutes in the initial temp conidions isothermally, and B elutes on a stable baseline after a ramp up to 90C.
% recovery for A is 100% + or - 5%.
% recovery for B is ~150% recovered at the 150% level and ~60% recovered at the 25% level. it looks like the response factor goes down with concentration on this on.
Any ideas? Much appreciated.
I was wondering why I would observe good linearity for one sample, A, and poor linearity for another, B. Both are injected in the same solution ranging from 3ppm to 0.5ppm.
A elutes in the initial temp conidions isothermally, and B elutes on a stable baseline after a ramp up to 90C.
% recovery for A is 100% + or - 5%.
% recovery for B is ~150% recovered at the 150% level and ~60% recovered at the 25% level. it looks like the response factor goes down with concentration on this on.
Any ideas? Much appreciated.