Author: M. Kubik
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  • 1 Technical University of Lódź Institute of Applied Radiation Chemistry Pomologiczna 18 96-100 Skierniewice (Poland)
  • 2 Research Institute of Pomology and Floriculture Department of Biochemistry Pomologiczna 18 96-100 Skierniewice (Poland)
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Dependence of counting efficiency of 1-methyl [2-14C]-imidazolidinone-2 adsorbed on the surface of various silica gels (different grain size and pore diameter) on scintillator (PT, PPO, butyl-PBD) concentration in three scintillation solvents was investigated by means of liquid scintillation spectrometry. It was established that the reason for deviations of the experimental points from the standard channel ratio curve is scintillation heterogeneity of the measured system. Proposition of an additional mechanism for excitation energy transport straight from silica gel globules to adsorbed molecules of the scintillator is discussed.