Definition of the factors of passing the area-pollution radio nucleids soil in the area

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Defınıtıon of the Factors of

Passıng the Area-Pollutıon Radıo

Nucleıds Soıl ın the Area

Orujova Jamala

Institute of Radiation

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•

On the settlement (village) Romani of the Absheron peninsula is On the settlement (village) Romani of the Absheron peninsula is situated a factory producing iodine. Boring water as used as a situated a factory producing iodine. Boring water as used as a

primary (raw) product in factory a long time. In doing so active coal primary (raw) product in factory a long time. In doing so active coal

was used as absorbent at the factory. was used as absorbent at the factory.

•

It is known boring water contains a certain amount of natural It is known boring water contains a certain amount of natural radionuclides having a long nuclear fission half period such as radionuclides having a long nuclear fission half period such as

uranium -238, thorium-232, radium-226 and potassium- 40. uranium -238, thorium-232, radium-226 and potassium- 40.

•

After disintegration of the USSR the factory was closed. A lot of After disintegration of the USSR the factory was closed. A lot of

produced coal was left at the factory yard. This coal makes a pile of produced coal was left at the factory yard. This coal makes a pile of

3 meters high and 600 square meters area. 3 meters high and 600 square meters area.

•

This coal pile creates at the territory a radiation field equal from This coal pile creates at the territory a radiation field equal from 700 to 1000 μR/h.

700 to 1000 μR/h.

•

We have chosen this territory as an experiment area and studying We have chosen this territory as an experiment area and studying the impact of radiation on the grass formation here.

the impact of radiation on the grass formation here.

•

In this work presented to your attention radionuclides polluting the In this work presented to your attention radionuclides polluting the area were identified and their vertical and horizontal distribution was area were identified and their vertical and horizontal distribution was

researched. researched.

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Slide 1

.

Distribution

4040

К

_К

isotope in soil depending on depth

_{isotope in soil depending on depth}

in area of experience.

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Slide 2. Distribution

226226

Ra isotope in soil depending on

_{Ra isotope in soil depending on}

depth in area of experience.

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Slide 3. Distribution

232232

Th isotope in soil depending on

_{Th isotope in soil depending on}

depth in area of experience.

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Pic.4 Distribution of radionuclides in soil by different

radiative background.

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• We can observe 35 - 40 sm deep maximum

We can observe 35 - 40 sm deep maximum

studying the results of vertical migration.

• It will be noted that Chernobil radionuclides are

It will be noted that Chernobil radionuclides are

distributed mainly at 15– 20 sm deep in the

polluted territory.

• The detected distribution radionuclides on the

The detected distribution radionuclides on the

Absheron peninsula, apparently, connected with

sandly composition of researched soil.

• Studying the horizontal distribution we can see

Studying the horizontal distribution we can see

that moving away from the source of pollution

the amount of radionuclides diminishes and

gets to background level at the distance of 70 -

80 meter.

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• The coefficient of gathering of radionuclides in

The coefficient of gathering of radionuclides in

the plants and their different organs is identified

according to the results.

• Gathering coefficient are identified by the

Gathering coefficient are identified by the

formula

:

K

t _t

=

n

r,pr,p(Bk/kg) (Bk/kg) / /

n

r,sr,s (Bk/kg) .(Bk/kg) .

•

(Here (Here nnr,p_r,p and and nnr,sr,s - shows the concentration of radionuclides - shows the concentration of radionuclides

in the plant and the soil).

• The results about gathering coefficient are given

The results about gathering coefficient are given

in Slides 13-14.

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Pic.

Pic. 5

5. Factors accumulation of radio nucleids in plants.

. Factors accumulation of radio nucleids in plants.

Kind of plant Quantity radio nucleids in soil Factors accumulation of radio nucleids in plants-K_t 40_К 226_Rа 232_Th 40_К 226_Rа 232_Th Alhagi pseudalhagi 120 - 1300 70 – 50000 30 - 4500 0.60 0.10 0.05 Zygophyllum L. 3.39 0.12 0.00 Turnefortia Sibirica 7.50 0.28 0.13 Juncus acutus L. 4.72 0.69 0.29

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Pic.

6

6 . Factors accumulation of radio nucleids in different

. Factors accumulation of radio nucleids in different

organs of plants.

Kind of plant. (organs) Quantity radio nucleids in soil (Bk/kg) Factors accumulation of radio nucleids in different organs of plants - К_т

40_К 226_Rа 232_Th 40_К 226_Rа 232_Th Alhagi pseudalha gi Root 1 2 0 – 1 3 0 0 7 0 – 5 0 0 0 0 3 0 – 4 5 0 0 0.12 0.09 0.00 Stalk 0.47 0.01 0.05 Zygophyl lum L. Root 1.10 0.07 0.00 Stalk 2.25 0.05 0.00 Leaf 0.04 0.00 0.00 Turnefor tia Sibirica Root 2.43 0.05 0.00 Stalk 1.78 0.03 0.00 Leaf 3.28 0.20 0.13 Juncus Root 0.79 0.69 0.22