STUDIES ON SORPTION AND RELEASE OF SOME RADIONUCLIDES BY FRESH WATER SUSPENDED MATfER, EGYpt Part ill - Strontium-89 By M.M. Ishak and S.R. Khalil Department of Limnology, Institute of Oceanography and Fisheries, Cairo Egypt, and Department of Radiation Protection, Atomic Energy Establishment, Cairo, Egypt

STUDIES ON SORPTION AND RELEASE OF SOME RADIONUCLIDES

BY FRESH WATER SUSPENDED MATfER, EGYpt

Part ill – Strontium-89

By
M.M. Ishak and S.R. Khalil
Department of Limnology, Institute of Oceanography and Fisheries, Cairo

Egypt, and Department of Radiation Protection, Atomic Energy Establishment,

Cairo, Egypt

BULLETIN OF THE INSTITUTE OF OCEANOGRAPHY &; FISIlERIE8 241
ABSTRACT
The effect of some parameters on the sorption and
release of Sr-89 by suspended matter of Ismailia Canal
was inv~stigated. The uptake of Sr-89 increased to an
equilibrium state by increasing the concentration of the
suspended matter to 500 mg/I. Organic content of
suspended matter did not show any appreciable effect
on the uptake of Sr-89. Sorption of Sr-89 decreased
at higher concentrations of the strontium and calcium
while it increased sharply at K+ concentration of 10-2
m.eq./ml. Maximum uptake of Sr-89 occurred at pH
]0 after one day of contact.
Filtered canal water and other extraction solutions
easily removed Sr-89 from the suspended matter.
Minimum percentage release values of Sr-89 occurred
at pH 5.