Experimental simulation of antimony and chromium forms of residence in the water of the Syr-Darya river, estuary and in the water of the Aral Sea usng sup(124)Sbsup((5)) and sup(51)Crsup((6)) radionuclides

Using the compbination of radiochemical methods, the physicochemical state of sup(124)Sbsup((5)) and sup(51)Crsup((6)) in the waters of the Syr-Darya river, estuary and the Aral Sea is studied. It is ascertained, that in the river, estuary and Aral Sea water the main amount of sup(124)Sbsup((5)) and sup(51)Crsup((6)) migrates in the form of negatively charged anions Sb(OH)6- and CrOsub(4)sup(2-). However, in the Aral Sea estuary the formation of finely dispersed colloid forms of chromium (6) and antimony (5) is possible due to their sorption on vegetable cellulose, modified by arid water components. There is also a possibility of appearance of antimony (5) sorptional forms on other sorbents in a narrow range of the Aral Sea water salinity