Abstract
The accurate counting of radiolabelled materials after their separation by silica gel thin layer chromatography poses problems because self-absorption limits recovery and counting efficiency. A new method is described that uses hydrofluoric acid to dissolve and deactivate the silica gel and a scintillation solution of toluene:triton × 100. This method yields higher efficiencies than other systems and virtually quantitative recoveries of carbon 14 and tritium labelled compounds.
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