GPC Unknown Analysis
The following instructions vary a little bit according to the experimental details of our
GPC experiment (each year, it’s a little different).
Analysis of the unknown polymers. a) Make a
plot to show the whole distribution for the unknown (or multiple unknowns, if you wish) using the datasets provided by the TA. You can do this manually for all I care, and I actually recommend converting a few of the DRI vs
points that way to ensure you know how to proceed. You may wish to check with the appropriate HowTo guide ( http://macro.lsu.edu/howto ).
Then you should use Excel, a QuickBasic program, Origin or something to calculate for each GPC slice. (Hint: you don't know the concentration,
, only things proportional to it, like the DRI signal). b) Report
, M z
, M n
, M z+1
and devise a way to estimate uncertainties for
you base your ± estimates.
Grading criteria: c vs M plot /5
+/- in a rational way /5