Inscrit le: 27 Jan 2018
|Posté le: Jeu 15 Mar 2018 - 11:38 Sujet du message: Recovery Problems in HS GC
I have a component separation of MTBE, MeOH, ACN, IPA and Pyridine. I'm using DB-Wax 30m x 0.53 id and 1.0μm film thickness. DMSO is the solvent. Sample prep is 100mg sample, 2ml DMSO and 1ml sat Na2SO4 in a 10ml HS vial.
I am having problems getting recoveries under 10% for MTBE which is the first eluter and Pyridine which is the last. MeOH, ACN, and IPA are less than 10% RDS. Also, RSD for MTBE is <5% and RSDs for the other components including pyridine are ~ 2.0%. I was hoping to hear some ideas on how to approach this problem.
I did not find the right solution from the internet.
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