Re: TOJC: lab
Allister Stone (stoneag@PLU.edu)
Tue, 24 Sep 1996 21:52:07 -0800 (PST)
On page 765 in the lab book it reads "a given compund always travels a
fiexed distance relative to the distance the solvent front travles." So
the distance the spots moved on the TLC compared to the distance the
solvent front moved is given as a decimal. The decimal is called the Rf.
Under specified conditions the Rf corresponds to a physical property of
that compond.
Pg 726 of the same lab book says "The continuous flow of solvent throught
the column elutes, or washes.... The solutes or materials to be seperated
are called eluates or elutants; and the solvents are called eluents.
Hope that helps,
Allister
On
Tue, 24 Sep 1996 fosliejf@PLU.edu wrote:
> Date: Tue, 24 Sep 1996 16:09:51 -0800 (PST)
> From: fosliejf@PLU.edu
> To: organic@rainier.chem.plu.edu
> Subject: TOJC: lab
>
>
> I was reading through the lab this afternoon and came upon a statement
> that I was curious about what exactly it meant. It said the first TLC plate
> was used to determine the order of elution for the known substances.
> What is the order of elution or Rf value?
>
> thanks for your help,
> Justin
>