The content of natural radioactive isotopes in soil of Kharkov region
The content and migration of natural radioactive isotopes in some lot of the surface soil of the Kharkiv region have been studied by the help of low background gamma spectroscopy. The migration series of radioactive elements (Ra > U > Th) in the soil of the Kharkiv region is determined, which...
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| Опубліковано в: : | Вопросы атомной науки и техники |
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| Дата: | 2017 |
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2017
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | The content of natural radioactive isotopes in soil of Kharkov region / N.P. Dikiy, Yu.V. Lyashko, E.P. Medvedeva, D.V. Medvedev, Yu.G. Parhomenko, I.D. Fedorets // Вопросы атомной науки и техники. — 2017. — № 3. — С. 55-59. — Бібліогр.: 10 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860260106901389312 |
|---|---|
| author | Dikiy, N.P. Lyashko, Yu.V. Medvedeva, E.P. Medvedev, D.V. Parhomenko, Yu.G. Fedorets, I.D. |
| author_facet | Dikiy, N.P. Lyashko, Yu.V. Medvedeva, E.P. Medvedev, D.V. Parhomenko, Yu.G. Fedorets, I.D. |
| citation_txt | The content of natural radioactive isotopes in soil of Kharkov region / N.P. Dikiy, Yu.V. Lyashko, E.P. Medvedeva, D.V. Medvedev, Yu.G. Parhomenko, I.D. Fedorets // Вопросы атомной науки и техники. — 2017. — № 3. — С. 55-59. — Бібліогр.: 10 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | The content and migration of natural radioactive isotopes in some lot of the surface soil of the Kharkiv region have been studied by the help of low background gamma spectroscopy. The migration series of radioactive elements (Ra > U > Th) in the soil of the Kharkiv region is determined, which corresponds to the humid type of climate. A high radium mobility as respect to uranium and thorium has been found. A high correlation between ⁴⁰K vs ²³²Th was found. Therefore, as a result of low mobility of thorium, it is possible to assume that thorium and potassium enter into the composition of the mother minerals. Correlation of ¹³⁷Cs with other radioactive isotopes was not significant in the soil of the Kharkiv region. This apparently indicates specifies in that a high mobility clay minerals can sorbing of cesium.
Вміст і міграція природних радіоактивних ізотопів у деяких ділянках поверхневого грунту Харківської області вивчалися за допомогою низькофонової гамма-спектроскопії. Визначена міграційна серія радіоактивних елементів (Ra > U > Th) у грунті Харківської області, що відповідає гумідному типу клімату. Виявлена висока рухливість радію по відношенню до урану і торію. Виявлена висока кореляція між ⁴⁰K vs ²³²Th, яка підтверджує, що торій і калій входять до складу материнських мінералів через низьку рухливость торію. Кореляція ¹³⁷Cs з іншими радіоактивними ізотопами не є суттєвою в грунті Харківської області. Це, мабуть, вказує на те, що високомобільні глинисті мінерали можуть сорбувати цезій.
Содержание и миграция природных радиоактивных изотопов в некоторых участках поверхностной почвы Харьковской области изучались с помощью низкофоновой гамма-спектроскопии. Определена миграционная серия радиоактивных элементов (Ra > U > Th) в почве Харьковской области, что соответствует гумидному типу климата. Обнаружена высокая подвижность радия по отношению к урану и торию. Обнаружена высокая корреляция между ⁴⁰K vs ²³²Th, которая подтверждает, что торий и калий входят в состав материнских минералов из-за низкой подвижности тория. Корреляция ¹³⁷Cs с другими радиоактивными изотопами не существенна в почве Харьковской области. Это, по-видимому, указывает на то, что высокомобильные глинистые минералы могут сорбировать цезий.
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| first_indexed | 2025-12-07T18:54:25Z |
| format | Article |
| fulltext |
THE CONTENT OF NATURAL RADIOACTIVE ISOTOPES IN
SOIL OF KHARKOV REGION
N.P.Dikiy1∗, Yu.V.Lyashko1, E.P.Medvedeva1, D.V.Medvedev1,
Yu.G.Parhomenko1, I.D.Fedorets2
1National Science Center "Kharkiv Institute of Physics and Technology", 61108, Kharkiv, Ukraine;
2V.N. Karazin Kharkiv National University, 61077, Kharkiv, Ukraine
(Received May 10, 2017)
The content and migration of natural radioactive isotopes in some lot of the surface soil of the Kharkiv region have
been studied by the help of low background gamma spectroscopy. The migration series of radioactive elements
(Ra > U > Th) in the soil of the Kharkiv region is determined, which corresponds to the humid type of climate. A
high radium mobility as respect to uranium and thorium has been found. A high correlation between 40K vs 232Th
was found. Therefore, as a result of low mobility of thorium, it is possible to assume that thorium and potassium
enter into the composition of the mother minerals. Correlation of 137Cs with other radioactive isotopes was not
signi�cant in the soil of the Kharkiv region. This apparently indicates speci�es in that a high mobility clay minerals
can sorbing of cesium.
PACS: 89.60.-k
1. INTRODUCTION
Soil radioactivity is formed by geochemical pro-
cesses in the biosphere. The parent rock generally
determines a concentration of radioactive elements in
soil. In Tab. 1 shows typical concentrations of natural
radionuclides in di�erent soil types. Biological pro-
cesses in the formation of soils lead to a greater ac-
cumulation of radionuclides in chernozems compared
to gray forest or sod-podzolic soils. The leaching
and precipitation of radionuclides by soil waters de-
termine the uneven distribution of nuclide activity
along the depth of the soil. For example, uranium
has a high concentration in the deep layers due to
the washing out of soluble fractions from the sur-
face horizons, and thorium, on the contrary, tends
to increase in the surface layers due to low solubil-
ity and greater weathering of other components from
the soil surface. Potassium tends to a greater extent
to surface layers as it characterizes by relatively high
biological activity (see Table 1) [1].
Many radionuclides, especially analogs of calcium
and actinides, have osteotropic properties and are be-
ing detected in the human body. This particularly
applies to radium isotopes. Radium and its com-
pounds are widely distributed in nature and are a
major source of natural radiation. During the weath-
ering, and migration of radium from rock to soil, it
can 'move out' in the particulate phase, to be trans-
ported and deposited as loess, silt placers, and ter-
tiary soil. However, that part of radium which tends
to be solubilized in water � either with a ground or
river water � moves along with the water stream until
it is �nally deposited in the soil through chemical or
biological action. The range of 226Ra concentrations
for soil in normal areas varies from 3.7 to 125.8 Bq/kg
[2]. It is known that the content and distribution of
radium in soils a�ects the radon emanation.
Table 1. The concentration of natural radionuclides
in soils, Bq/kg
Type of soil 238U 232Th 40K
Serozems 31.5 48.1 666
Gray-brown 27.8 40.7 703
Chestnut 26.6 37 555
Chernozems 21.6 35.9 407
Gray forest 17.8 26.6 370
Sod-podzolic 15.2 22.2 300
Podzolic 8.9 12.2 148
Peaty 6.3 6.3 89
Thorium exists in soils mainly as thorite
(ThSiO4), monazite [(Ce,La,Th,Nd)PO4], and thori-
anite (ThO2). Although they are very resistant after
extreme weathering, monazite and thorite end up be-
ing dissolved and then precipitates as thorianite.
Our planet displays the results of an uninten-
tional, multibillion-year experiment between biota
and Earth materials. One of the exciting frontiers
in the geosciences is the investigation of how biota
impacts chemical and physical processes in the Crit-
ical Zone. Understanding the feedbacks between life
and Earth materials is important for society as well,
because humans, a relatively recent addition to the
∗Corresponding author E-mail address: ndikiy@kipt.kharkov.ua
ISSN 1562-6016. PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY, 2017, N3(109).
Series: Nuclear Physics Investigations (68), p.55-59.
55
Earth's biota, are increasingly testing the resilience
of the Critical Zone. The response of Critical Zone
processes to these stresses will ultimately impact the
whole of the Earth's biosphere, and thereby, humans
themselves [1].
The biotechnological introduction of microbial
genes coding for toxic proteins against insects, weed
species or other pests in the genome of crop plants is
another important topic in the study of the environ-
mental and health consequences of protein�mineral
interactions in soil. Some of the best known and
most controversial genetically modi�ed plants are
those containing the Bacillus thuringiensis (Bt) toxin.
Commercially available Bt plants include maize, cot-
ton, potato, tobacco and rice. Nevertheless, the bal-
ance between these clear advantages in the short-
and medium-terms and the possible pernicious ef-
fects in the longer term needs to be studied. With
the introduction of toxins, such as Bt and an in-
creasing number of other potentially valuable insec-
ticidal molecules, the risk of the development of re-
sistance increases. This could have major negative
consequences for agriculture, equivalent to bacterial
resistance to antibiotics in medicine. Thus, studies
on the long-term fate and side e�ects of Bt toxins in
soil need to be pursued [3].
500 1000 1500
101
102
103
214Bi
214Bi
228Ac
208Tl
214Pb
40K
co
un
ts
energy , keV
soil
212Pb
137Cs
511 keV
Fig.1. The energy spectrum of soil sample
Modern ideas about the formation of chernozems
con�rm the hypothesis of plant-terraneous origin.
The most important processes of formation of cher-
nozems are sodding and eluvial. The latter is ex-
pressed mainly in the pro�le migration of calcium
bicarbonate, which is formed by the decomposition
of plant remains rich in calcium. These processes de-
velop under the perennial vegetation of grassy steppes
in the forest-steppe and steppe zones under condi-
tions of periodically washing and non-washable wa-
ter regimes and form humus and carbonate pro�les
of chernozem [4]. Dust �ux is greater than 10% of
global sediment. Therefore the deposition from the
atmosphere plays an important role in the biogeo-
chemistry of soils worldwide [5].
The study of the content of 40K, 232Th, 238U and
their radioactive products in soils of a neighborhood
of the Kharkiv region and an establishment of cor-
relative connections between radioelements were the
purposes of the present investigation.
2. MATERIALS AND METHODS
Samples of soils (15x15 cm2 and h=10 cm) were
collected in the neighborhood of Kharkiv on virgin
soil or in the forest. Two samples were taken on
arable land. Soil samples were dried at room tem-
perature, then sieved through a 1-mm mesh to re-
move the roots of plants and stones and homogenized
prior to analysis. Determination of the radionuclides
in soil samples was performed by gamma spectrome-
ter method on Ge(Li)-detector with the volume of 50
cm3 and resolution of 3.2 keV at 1332 keV line. The
measurement time of the gamma spectrum of each
soil sample was about 24 hours. To reduce the in�u-
ence of background, the detector is equipped with a
three-layer Pb-Cu-Al protection [6] (Fig.1). The er-
rors in determining the activity of radionuclides 40K
and 137Cs do not exceed 20%. The same errors are
found for 228Ac, 212Pb, 208Tl from the family 232Th
and 214Pb, 214Bi (which is determined the parent
226Ra) from the family 238U. The more signi�cant
error is for 238U, the activity of which was calculated
from the activity of 235U (line of 186 keV is equal
sum's of lines from 226Ra+235U).
0,0 0,1 0,2
0,01
0,02
0,03
0,04
Kharkiv region
Askaniya-Nova
ac
tiv
ity
22
6 R
a,
B
q/
g
activity 238U, Bq/g
A
Ra
=0.31 A
U
Fig.2. Dependence of activity of 226Ra vs 238U in
the soil of the Kharkiv region and Askaniya-Nova
3. RESULTS AND DISCUSSION
It is known that the content of radioactive iso-
topes in the soil is largely determined by the parent
rocks. However, environmental conditions have a sig-
ni�cant e�ect on the migration of uranium, thorium
and their decay products. For example, the migra-
tion of radium (an analog of calcium) depends most
strongly on the environmental conditions. In Fig.2
shows the dependence of activity of 226Ra on the ac-
tivity of 238U for various samples of soil from di�erent
regions of Ukraine. The data from Askaniya-Nova is
taken from [7]. The Kharkiv region is characterized
by a humid climate, which, apparently, determines
the greater removal of radium from a given territory
in the sea. Askaniya-Nova is characterized by a more
56
arid climate. It can be assumed that the Askaniya-
Nova region was often �ooded with water (its height
above sea level is 30 m). Therefore, the content of
226Ra in the soil of Askaniya-Nova is somewhat higher
than in the humid zone of the Kharkiv region. We
note that in the soil, which is closer to the parent
rock, there is a 226Ra/238U equilibrium. In our case,
the content of radium for the Kharkiv region is much
smaller (see Fig.2).
0,02 0,04 0,06 0,08
0,2
0,4
0,6
0,8
activity 238U, Bq/g
40K
ac
tiv
ity
40
K,
B
q/
g
Fig.3. Dependence of activity of 40K vs 238U in the
soil of the Kharkiv region
0,01 0,02 0,03
0,2
0,4
0,6
0,8
ac
tiv
ity
40
K,
B
q/
g
activity 214Bi, Bq/g
Fig.4. Dependence of activity of 40K vs 214Bi
(226Ra) in the soil of the Kharkiv region
In Figs.3-5 the dependencies of activity 40Ê vs
238U, 40Ê vs 214Bi (corresponds 226Ra) and 40Ê vs
208Tl (corresponds 232Th) in soil of the Kharkov re-
gion are given. Approximation of the above depen-
dencies is carried out by a linear function. It is pos-
sible to see that the most smaller straggling of the
values concerning a linear function is observed for de-
pendence 40K/232Th. As stated above, it is caused by
high fastness of thorium minerals in the soil. Small
enough straggling of value is observed and for depen-
dence 40Ê/214Bi. We will notice that points values of
40Ê which strongly di�er from a linear dependence,
correspond to samples which had been taken from an
arable land. The greatest straggling of values is re-
alized for dependence 40Ê/238U. In general, uranium
is more closely associated with iron and manganese,
due to its strong sorption by iron oxides. Radium, on
the other hand, is more related to Ca and Ba in its
behavior [4].
0,00 0,02 0,04
0,0
0,2
0,4
0,6
0,8
ac
tiv
ity
40
K,
B
q/
g
activity 208Tl(232Th), Bq/g
40K
Fig.5. Dependence of activity of 40K vs 208Tl
(232Th) in the soil of the Kharkiv region
0,02 0,04 0,06
0,01
0,02
0,03
0,04
Kharkiv region
Askaniya-Nova
ac
tiv
ity
21
4 Pb
, B
q/
g
activity 212Pb, Bq/g
Fig.6. Dependence of activity of 214Pb vs 212Pb in
the soil of the Kharkiv region and Askaniya-Nova
The intensity of migration of radioactive elements
by of water under oxidizing conditions forms the fol-
lowing series: 238U > 226Ra > 232Th. Due to the
di�erent migration mobility of natural radioactive el-
ements, a redistribution of these elements between
the conjugate landscapes is observed. Thus, U(VI) is
removed from eluvial landscapes and concentrates on
geochemical barriers such as �oodplain, marsh and
swampy soils, where it is restored to a relatively in-
active U(IV). In humid eluvial and trans-eluvial land-
scapes, soils are depleted of uranium in favor of ra-
dium in comparison with their equilibrium ratio. Hy-
dromorphic soils of accumulative landscapes are en-
riched uranium. In alluvial sediments, the concen-
trations of U and Ra are low due to their leaching
and removing by water. The ratio Ra/U in alluvial
sediments is high since U is more mobility and is pre-
dominated in the water. The shift of radioisotope
ratios in soils of conjugate landscapes is observed for
Th/U and Th/Ra since thorium is characterized by
much lower migration mobility in comparison with U
and Ra [8]. For soils of the humid zone, the migra-
tion series of elements Ra > U > Th were determined.
57
In our case, Ra is more mobile, which con�rms the
humid climate of the Kharkiv region [4] (see Fig.2).
The dependence of 214Pb vs 212Pb, which is re-
lated to the ratio of uranium vs thorium and in a
greater degree to the ratio of radium vs thorium, is
shown in Fig.6. In our case, a signi�cant amount of
radium is washed out by water (see Fig.2). Therefore,
it can be assumed that a signi�cant amount of ra-
dium is found in minerals containing thorium. A cer-
tain con�rmation of this is the dependence of 214Pb
vs 212Pb for the Askaniya-Nova soil (see Fig.6), in
which an analogous dependence take place only for
large values of 212,214Pb.
The dependence of 40K vs 214Pb shows In Fig.7
(214Pb is the decay product of 238U → 226Ra). More
reliably, this dependence is due to 226Ra. The con-
tent of 238U and 40K is greater for the dark chestnut
soil of Askaniya-Nova than for chernozems [9]. The
40K content is especially great in the soil of Askaniya-
Nova (see Fig.7).
0,01 0,02 0,03 0,04
0,2
0,4
0,6
0,8
Kharkiv region
Askaniya-Nova
ac
tiv
ity
40
K
Bq
/g
activity 214Pb, Bq/g
Fig.7. Dependence of activity of 40K vs 214Pb in
the soil of the Kharkiv region and Askaniya-Nova
0,02 0,04 0,06
0,2
0,4
0,6
0,8
Kharkiv region
Askaniya-Nova
ac
tiv
ity
40
K
Bq
/g
activity 212Pb, Bq/g
Fig.8. Dependence of activity of 40K vs 212Pb in
the soil of the Kharkiv region and Askaniya-Nova
The dependence of 40K vs 212Pb is shown in Fig.8
(212Pb product of the decay of 232Th). The mobility
of Th in soil is low, so the dependence of 40K vs 212Pb
for the soil of Askaniya-Nova is similar it's for the soil
of Kharkiv region, which corresponds to the conven-
tional value of thorium content in the dark chestnut
soil [10].
The dependence of 40K vs 137Cs is shown in Fig.9.
It can be seen that there are no correlation links. It
can be assumed that the 137Cs content is due to its
sorption by illite of soil. Due to water erosion, the
caesium moves from the humid area or it is trans-
ported to deeper horizons of the soil.
0,00 0,02 0,04 0,06
0,2
0,4
0,6
0,8
ac
tiv
ity
40
K
Bq
/g
activity 137Cs, Bq/g
K40
Fig.9. Dependence of activity of 40K vs 137Cs in
the soil of the Kharkiv region
4. CONCLUSIONS
1. The series of migration elements (Ra > U >
Th) in the soil of the Kharkiv region is determined
by gamma spectrometer method. These series of mi-
gration elements corresponds to the humid type of
climate. A high mobility of radium as respect to ura-
nium and thorium has been found.
2. A high correlation between 40K vs 232Th was
found. Therefore, as a result of low mobility of tho-
rium, it is possible to assume that thorium and potas-
sium enter into the composition of the mother min-
erals.
3. Correlation of 137Cs with other radioactive iso-
topes was not signi�cant in the soil of the Kharkiv
region. This apparently indicates speci�es in that a
high mobility clay minerals can sorbing of cesium.
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ÑÎÄÅÐÆÀÍÈÅ ÏÐÈÐÎÄÍÛÕ ÐÀÄÈÎÀÊÒÈÂÍÛÕ ÈÇÎÒÎÏΠ ÏÎ×ÂÅ
ÕÀÐÜÊÎÂÑÊÎÉ ÎÁËÀÑÒÈ
Í.Ï. Äèêèé, Þ.Â. Ëÿøêî, Å.Ï. Ìåäâåäåâà, Ä.Â. Ìåäâåäåâ, Þ.Ã. Ïàðõîìåíêî,
È.Ä. Ôåäîðåö
Ñîäåðæàíèå è ìèãðàöèÿ ïðèðîäíûõ ðàäèîàêòèâíûõ èçîòîïîâ â íåêîòîðûõ ó÷àñòêàõ ïîâåðõíîñòíîé
ïî÷âû Õàðüêîâñêîé îáëàñòè èçó÷àëèñü ñ ïîìîùüþ íèçêîôîíîâîé ãàììà-ñïåêòðîñêîïèè. Îïðåäåëåíà
ìèãðàöèîííàÿ ñåðèÿ ðàäèîàêòèâíûõ ýëåìåíòîâ (Ra > U > Th) â ïî÷âå Õàðüêîâñêîé îáëàñòè, ÷òî
ñîîòâåòñòâóåò ãóìèäíîìó òèïó êëèìàòà. Îáíàðóæåíà âûñîêàÿ ïîäâèæíîñòü ðàäèÿ ïî îòíîøåíèþ ê
óðàíó è òîðèþ. Îáíàðóæåíà âûñîêàÿ êîððåëÿöèÿ ìåæäó 40K vs 232Th, êîòîðàÿ ïîäòâåðæäàåò, ÷òî
òîðèé è êàëèé âõîäÿò â ñîñòàâ ìàòåðèíñêèõ ìèíåðàëîâ èç-çà íèçêîé ïîäâèæíîñòè òîðèÿ. Êîððåëÿöèÿ
137Cs ñ äðóãèìè ðàäèîàêòèâíûìè èçîòîïàìè íå ñóùåñòâåííà â ïî÷âå Õàðüêîâñêîé îáëàñòè. Ýòî, ïî-
âèäèìîìó, óêàçûâàåò íà òî, ÷òî âûñîêîìîáèëüíûå ãëèíèñòûå ìèíåðàëû ìîãóò ñîðáèðîâàòü öåçèé.
ÂÌIÑÒ ÏÐÈÐÎÄÍÈÕ ÐÀÄIÎÀÊÒÈÂÍÈÕ IÇÎÒÎÏIÂ Ó ÃÐÓÍÒI ÕÀÐÊIÂÑÜÊÎ�
ÎÁËÀÑÒI
Ì.Ï. Äèêèé, Þ.Â. Ëÿøêî, Î.Ï. Ìåäâåä¹âà, Ä.Â. Ìåäâåä¹â, Þ.Ã. Ïàðõîìåíêî,
I.Ä. Ôåäîðåöü
Âìiñò i ìiãðàöiÿ ïðèðîäíèõ ðàäiîàêòèâíèõ içîòîïiâ ó äåÿêèõ äiëÿíêàõ ïîâåðõíåâîãî ãðóíòó Õàðêiâñü-
êî¨ îáëàñòi âèâ÷àëèñÿ çà äîïîìîãîþ íèçüêîôîíîâî¨ ãàììà-ñïåêòðîñêîïi¨. Âèçíà÷åíà ìiãðàöiéíà ñåðiÿ
ðàäiîàêòèâíèõ åëåìåíòiâ (Ra > U > Th) ó ãðóíòi Õàðêiâñüêî¨ îáëàñòi, ùî âiäïîâiä๠ãóìiäíîìó òèïó
êëiìàòó. Âèÿâëåíà âèñîêà ðóõëèâiñòü ðàäiþ ïî âiäíîøåííþ äî óðàíó i òîðiþ. Âèÿâëåíà âèñîêà êîðå-
ëÿöiÿ ìiæ 40K vs 232Th, ÿêà ïiäòâåðäæó¹, ùî òîðié i êàëié âõîäÿòü äî ñêëàäó ìàòåðèíñüêèõ ìiíåðàëiâ
÷åðåç íèçüêó ðóõëèâîñòü òîðiþ. Êîðåëÿöiÿ 137Cs ç iíøèìè ðàäiîàêòèâíèìè içîòîïàìè íå ¹ ñóòò¹âîþ
â ãðóíòi Õàðêiâñüêî¨ îáëàñòi. Öå, ìàáóòü, âêàçó¹ íà òå, ùî âèñîêîìîáiëüíi ãëèíèñòi ìiíåðàëè ìîæóòü
ñîðáóâàòè öåçié.
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| id | nasplib_isofts_kiev_ua-123456789-136096 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-07T18:54:25Z |
| publishDate | 2017 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Dikiy, N.P. Lyashko, Yu.V. Medvedeva, E.P. Medvedev, D.V. Parhomenko, Yu.G. Fedorets, I.D. 2018-06-15T19:07:49Z 2018-06-15T19:07:49Z 2017 The content of natural radioactive isotopes in soil of Kharkov region / N.P. Dikiy, Yu.V. Lyashko, E.P. Medvedeva, D.V. Medvedev, Yu.G. Parhomenko, I.D. Fedorets // Вопросы атомной науки и техники. — 2017. — № 3. — С. 55-59. — Бібліогр.: 10 назв. — англ. 1562-6016 PACS: 89.60.-k https://nasplib.isofts.kiev.ua/handle/123456789/136096 The content and migration of natural radioactive isotopes in some lot of the surface soil of the Kharkiv region have been studied by the help of low background gamma spectroscopy. The migration series of radioactive elements (Ra > U > Th) in the soil of the Kharkiv region is determined, which corresponds to the humid type of climate. A high radium mobility as respect to uranium and thorium has been found. A high correlation between ⁴⁰K vs ²³²Th was found. Therefore, as a result of low mobility of thorium, it is possible to assume that thorium and potassium enter into the composition of the mother minerals. Correlation of ¹³⁷Cs with other radioactive isotopes was not significant in the soil of the Kharkiv region. This apparently indicates specifies in that a high mobility clay minerals can sorbing of cesium. Вміст і міграція природних радіоактивних ізотопів у деяких ділянках поверхневого грунту Харківської області вивчалися за допомогою низькофонової гамма-спектроскопії. Визначена міграційна серія радіоактивних елементів (Ra > U > Th) у грунті Харківської області, що відповідає гумідному типу клімату. Виявлена висока рухливість радію по відношенню до урану і торію. Виявлена висока кореляція між ⁴⁰K vs ²³²Th, яка підтверджує, що торій і калій входять до складу материнських мінералів через низьку рухливость торію. Кореляція ¹³⁷Cs з іншими радіоактивними ізотопами не є суттєвою в грунті Харківської області. Це, мабуть, вказує на те, що високомобільні глинисті мінерали можуть сорбувати цезій. Содержание и миграция природных радиоактивных изотопов в некоторых участках поверхностной почвы Харьковской области изучались с помощью низкофоновой гамма-спектроскопии. Определена миграционная серия радиоактивных элементов (Ra > U > Th) в почве Харьковской области, что соответствует гумидному типу климата. Обнаружена высокая подвижность радия по отношению к урану и торию. Обнаружена высокая корреляция между ⁴⁰K vs ²³²Th, которая подтверждает, что торий и калий входят в состав материнских минералов из-за низкой подвижности тория. Корреляция ¹³⁷Cs с другими радиоактивными изотопами не существенна в почве Харьковской области. Это, по-видимому, указывает на то, что высокомобильные глинистые минералы могут сорбировать цезий. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Ядерно-физические методы и обработка данных The content of natural radioactive isotopes in soil of Kharkov region Вміст природних радіоактивних ізотопів у грунті Харківської області Содержание природных радиоактивных изотопов в почве Харьковской области Article published earlier |
| spellingShingle | The content of natural radioactive isotopes in soil of Kharkov region Dikiy, N.P. Lyashko, Yu.V. Medvedeva, E.P. Medvedev, D.V. Parhomenko, Yu.G. Fedorets, I.D. Ядерно-физические методы и обработка данных |
| title | The content of natural radioactive isotopes in soil of Kharkov region |
| title_alt | Вміст природних радіоактивних ізотопів у грунті Харківської області Содержание природных радиоактивных изотопов в почве Харьковской области |
| title_full | The content of natural radioactive isotopes in soil of Kharkov region |
| title_fullStr | The content of natural radioactive isotopes in soil of Kharkov region |
| title_full_unstemmed | The content of natural radioactive isotopes in soil of Kharkov region |
| title_short | The content of natural radioactive isotopes in soil of Kharkov region |
| title_sort | content of natural radioactive isotopes in soil of kharkov region |
| topic | Ядерно-физические методы и обработка данных |
| topic_facet | Ядерно-физические методы и обработка данных |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/136096 |
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