Studies of sorption properties of impregnated porous scintillator based onp-terphenyl

For dosimetry of beta -radionuclides in surface and potable water, an impre gnated porous scintillator based on p-terphenyl is proposed, which is a mat rix with through pores with a sorbent selectively absorbing radionuclides o n the pore surface. Synthetic hydroxyapatite is used as sorbent for stronti um-90. High measurement sensitivity is ensured by concentration of the emit ter from large volume of water and realization of 4 pi -geometry of radiati on detection.