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use of 2-mercaptoethanol in HPLC

Posted: Fri May 04, 2012 3:38 am
by flynnsaint
Hi All,

I have just joined the chrom forum as I have been given the job of setting
up and HPLC system at our factory. I am starting on a method to measure
methyl-mercury in waters.

I have noticed that a lot of methods use 2-mercaptoethanol in the mobile phase
My question is Why? It seems from a few papers I read it sharpens the peaks
but what is the mechanism?

Thanks

Flynnsaint