137 Cs
90 Sr of the total content of radionuclides in the water was in the hydrogensulphidous zone of the Black Sea.
The period of the cycle of
90 Sr and
137 Cs in the oxygen and hydrogen-sulphidous
zones of the Black Sea is about 14 and 94 years, respectively. In the latter case, this
value is three times the half-life of
90 Sr and
137 Cs, so the hydrogen-sulphidous zone
of the water column of the Black Sea can be seen as a depot for these radionuclides.
References
Barannik VP (1974) The concentration and spatial distribution of strontium-90 in the Black and
Azov Seas and their interaction with individual hydrophysical and hydrochemical processes.
Oceanology 14(2):274–281 (in Russian)
Bogdanova AK (1959) Water exchange through the Bosporus and its role in stirring the waters of
the Black Sea. Proc Sevastopol Biol Station 12:401–420 (in Russian)
Buesseler KO, Casso SA, Hartman MC, Livingston HD (1990) Determination of fission – products
and actinides in the Black Sea following the Chernobyl accident. J Radioanal Nucl Chem 138
(1):33–47
Chudinovskikh TV, Batrakov GF, Demyshev SG, Zapevalov AS (2004) Field and theoretical
research of behaviour of technogenic radionuclides in the Black Sea. J Environ Control Syst
ECOSEA–Hydrophysics, Sevastopol, pp 228–237 (in Russian)
Database of R&ChBD of IMBR (for the period 1964–2006) 2006 Water hydrobionts bottom
sediments. Computer program of R&ChBD, created in 1992 in Paradox. R&ChBD, IMBR,
Sevastopol, 425 p (in Russian)
Egorov VN, Polikarpov GG, Kulebakina LG, Stokozov NA, Yevtushenko DB (1993) Large-scale
model of the Black Sea pollution by long-lived radionuclides cesium-137 and strontium-90 as a
result of the Chernobyl NPP accident. Water resources 20(3):326–330 (in Russian)
Table 17.5 Half–lives (T 0.5 ) and complete times of responses (T ¼ 5 T 0.5 ) for main balance
components and some ecosystems of the Black Sea Basin to the pollution with
90
Sr and
137
Cs after
the ChNPP accident (years)
Components
90
Sr
137
Cs
T 0.5
T
T 0.5
T
Inflow from the Dnieper River (since 1987)
7.0
36.0
2.0
11.0
Inflow from the Danube River (since 1987)
14.4
73.0
6.9
35.5
Outflow through the Bosporus Strait (since 1987)
9.5
47.5
6.4
32
Surface waters near the Dnieper estuary (since 1989)
9.6
52.0
–
–
Surface waters of the Central Western Black Sea (since 1986)
9.9
49.5
6.1
30.5
Danube Delta marine bottom sediments (since 1991)
–
–
14.4
77.0
Region of the Sevastopol Bay:
Surface waters (since 1987)
8.8
45.0
6.1
30.5
Brown seaweed Cystoseira crinita (since 1987 )
4.9
25.0
4.7
24.0
Mollusc Mytilis galloprovincialis (since 1986)
6.7
33.5
7.6
38
Note:–Including period before an exponential decreasing
292
N.Y. Mirzoyeva et al.
90 Sr of the total content of radionuclides in the water was in the hydrogensulphidous zone of the Black Sea.
The period of the cycle of
90 Sr and
137 Cs in the oxygen and hydrogen-sulphidous
zones of the Black Sea is about 14 and 94 years, respectively. In the latter case, this
value is three times the half-life of
90 Sr and
137 Cs, so the hydrogen-sulphidous zone
of the water column of the Black Sea can be seen as a depot for these radionuclides.
References
Barannik VP (1974) The concentration and spatial distribution of strontium-90 in the Black and
Azov Seas and their interaction with individual hydrophysical and hydrochemical processes.
Oceanology 14(2):274–281 (in Russian)
Bogdanova AK (1959) Water exchange through the Bosporus and its role in stirring the waters of
the Black Sea. Proc Sevastopol Biol Station 12:401–420 (in Russian)
Buesseler KO, Casso SA, Hartman MC, Livingston HD (1990) Determination of fission – products
and actinides in the Black Sea following the Chernobyl accident. J Radioanal Nucl Chem 138
(1):33–47
Chudinovskikh TV, Batrakov GF, Demyshev SG, Zapevalov AS (2004) Field and theoretical
research of behaviour of technogenic radionuclides in the Black Sea. J Environ Control Syst
ECOSEA–Hydrophysics, Sevastopol, pp 228–237 (in Russian)
Database of R&ChBD of IMBR (for the period 1964–2006) 2006 Water hydrobionts bottom
sediments. Computer program of R&ChBD, created in 1992 in Paradox. R&ChBD, IMBR,
Sevastopol, 425 p (in Russian)
Egorov VN, Polikarpov GG, Kulebakina LG, Stokozov NA, Yevtushenko DB (1993) Large-scale
model of the Black Sea pollution by long-lived radionuclides cesium-137 and strontium-90 as a
result of the Chernobyl NPP accident. Water resources 20(3):326–330 (in Russian)
Table 17.5 Half–lives (T 0.5 ) and complete times of responses (T ¼ 5 T 0.5 ) for main balance
components and some ecosystems of the Black Sea Basin to the pollution with
90
Sr and
137
Cs after
the ChNPP accident (years)
Components
90
Sr
137
Cs
T 0.5
T
T 0.5
T
Inflow from the Dnieper River (since 1987)
7.0
36.0
2.0
11.0
Inflow from the Danube River (since 1987)
14.4
73.0
6.9
35.5
Outflow through the Bosporus Strait (since 1987)
9.5
47.5
6.4
32
Surface waters near the Dnieper estuary (since 1989)
9.6
52.0
–
–
Surface waters of the Central Western Black Sea (since 1986)
9.9
49.5
6.1
30.5
Danube Delta marine bottom sediments (since 1991)
–
–
14.4
77.0
Region of the Sevastopol Bay:
Surface waters (since 1987)
8.8
45.0
6.1
30.5
Brown seaweed Cystoseira crinita (since 1987 )
4.9
25.0
4.7
24.0
Mollusc Mytilis galloprovincialis (since 1986)
6.7
33.5
7.6
38
Note:–Including period before an exponential decreasing
292
N.Y. Mirzoyeva et al.