Determination of 14C in microplates by radioluminography

A method alternative to liquid scintillation counting for detecting 14C was developed. The new method involves putting an aqueous radioactive sample onto the flat-bottomed wells of a polystyrene microplate, preparing a pellicle by lyophilization, and determining the radioactivity using radioluminography. It provides a simple, inexpensive, sensitive and reliable technique for determining the radioactivity of a few hundred samples simultaneously.