Rajeev Jain

3 Questions 6 Answers 0 Followers

Questions related from Rajeev Jain

What is a solvent system for TLC of Aspirin?

I am trying for the TLC of Acetylsalicylic acid, salicylic acid and gentisic acid. I tried so many solvent system, except acetylsalicyclic acid, under UV light (365nm) spots of salicylic acid and...

31 August 2015 5,047 2 View

How can I avoid peaks of Siloxane in GC-MS while running TMS derivatives?

When I am running TMS derivatives of some phenolic compounds on TG-5MS column, I am getting intense peaks of siloxane in my chromatogram. The injection port temperature is 250°C, and oven starts...

12 October 2012 7,821 2 View

Why the retention time of any peak at different concentrations in GC-MS/MS differs?

The peak of organochlorine pesticides and other analytes at 500-1000 ppb gives a constant Rt, but at lower concentrations (below 100 ppb), the retention time significantly differs, why?

08 October 2012 4,637 28 View