Radiochemical Investigation

Category: Ukrainean-polish sympozium

RADIOCHEMICAL INVESTIGATION

OF HEAVY ELEMENTS NUCLEUS FISSION

FRAGMENTS IN WATER – titanium

phosphate SYSTEM

H. V. Vasilieva1, V. V. Strelko2, V. S. Kuts2

1Uzhgorod State University,

294000, Uzhgorod, Kapitulna, 9

2ISPE, 03680 Kyiv-164, General Naumov st., 13

Now, the problems connected to clearing of drinking water, air, waste water from contamination, in particular, from radionuclides, are most actual. For this purpose different adsorbents are widely used, as well as search and investigations of new methods of sorptive possibilities have practical significance. In the given work the data of preliminary study of a character of an adsorption of a number of fragments of division of nucleuses of uranium in a water - titanium phosphate systems, obtained by a method γ–spectroscopy of a radiation of fragments of uranium are indicated.

The neutrons from a response 9Ве (g, n), caused by a Bremsstrahlung of a microthrone, hitting on uranium targets, called a response of division of uranium on fragments, which were accumulated by water in cuvettes.

After an exposure the water was spilled in 4 vessels, in 3 of which was added adsorbent titanium phosphate. The time of sorption was 72 and 120 minutes. Efficiency of sorption was determined as the relation of intensity of an appropriate line, Nс, obtained from sorbent, to the sum of intensities of the same line obtained from the water Nв and from sorbent Nc:

C=Nc/(Nb+Nc)

The outcomes, indicated in the table, of a measurement of sorption efficiency for a number of fragments is indicated in the tables testify to availability of effect of sorption of zirconium, niobium, molybdenum and calcium by titanium phosphate in circumscribed conditions.

Table

nuclear fission

fragments

half-value

period.

quantum

output

C (time of sorption, min.)

72

120

97Zr

1020

94.6

0.36 +/- 0.05

0.73 +/_ 0.09

97Nb

1021

100

0.41 +/-0.06

0.63 +/- 0.09

99Mo

3961

90.1

0.40 +/- 0.04

0.54 +/- 0.05

133I

1248

87.3

0.05 +/- 0.02

0.14 +/- 0.04

143Ce

1980

41.3

0.39 +/- 0.07

0.55 +/- 0.13

The obtained data give the basis to hope for a possibility of a realization of the given express technique for the qualitative and quantitative analysis of sorptive properties of the adsorbnets in relation to fragments of division as uranium, and, apparently, other transuranic elements.



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