The determination of 65Zn in tissues with Geiger and scintillation counters

Abstract
The previous extraction method was shortened to a tissue digestion with H2SO4 or HNO3 followed by a direct count on the diluted digest in a glass tube. A scintillation counter is described. This has a greater sensitivity and higher ratio for the net count rate/background count rate for gamma-rays, which are alone significant for Zn65.