Distribution of Radioactive and Rare-Earth Elements in Soils of the Guangdong Province, China

A. N. Zlobina, L. P. Rikhvanov, N. V. Baranovskaya, N. Wang, I. M. Farhutdinov

Результат исследований: Материалы для журналаСтатья

Выдержка

Abstract: The mineral and geochemical features of soils with increased natural radioactivity in the southern China province of Guangdong have been studied. The distribution patterns of uranium (U), thorium (Th), lanthanum (La), cerium (Ce), neodymium (Nd), samarium (Sm), europium (Eu), terbium (Tb), ytterbium (Yb), and lutetium (Lu) in the profile of ferrallitic soils (Ferralsols) have been examined for the first time, using a wide range of research methods. The method of neutron activation analysis has revealed increased concentrations of radioactive and some rare earth elements. Electron microscopy, fragmentation radiography, and X-ray phase analysis have been applied to study the forms of the elements. The correlation between the particle-size distribution of soils and element concentrations in particular particle-size fractions has been revealed. The mineralogical composition of soils has been studied, and minerals-concentrators of radioactive and rare-earth elements—monazite, zircon, xenotime, thorite, and a rare-earth cerium phase with thorium—have been determined. A high Th concentration in the soil has been pointed out. Its significant part migrates with the destroyed material of alkaline thorium granites represented by fine solid particles with an admixture of accessory minerals. The anomalous levels of U, Th, Ce, and La in the studied soils are mainly related to the high content of these elements in the soil-forming rocks. The dependence of the increase in radon activity due to the uranium release from structural lattices of minerals and transition to other forms (adsorbed in particular) has been revealed. A possible effect of high concentration of radionuclides in rocks, soils, and groundwater and of the increased radon activity on the development of malignant tumors in people has been pointed out. According to the World Health Organization, the Guangdong province is characterized by the highest rate of nasopharyngeal cancer in the world.

Язык оригиналаАнглийский
Страницы (с-по)644-653
Число страниц10
ЖурналEurasian Soil Science
Том52
Номер выпуска6
DOI
СостояниеОпубликовано - 1 июн 2019

Отпечаток

rare earth elements
rare earth element
thorium
cerium
China
soil
minerals
radon
lanthanum
uranium
lutetium
terbium
samarium
rocks
europium
ytterbium
neodymium
mineral
neutron activation analysis
particle size

ASJC Scopus subject areas

  • Soil Science
  • Earth-Surface Processes

Цитировать

Distribution of Radioactive and Rare-Earth Elements in Soils of the Guangdong Province, China. / Zlobina, A. N.; Rikhvanov, L. P.; Baranovskaya, N. V.; Wang, N.; Farhutdinov, I. M.

В: Eurasian Soil Science, Том 52, № 6, 01.06.2019, стр. 644-653.

Результат исследований: Материалы для журналаСтатья

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abstract = "Abstract: The mineral and geochemical features of soils with increased natural radioactivity in the southern China province of Guangdong have been studied. The distribution patterns of uranium (U), thorium (Th), lanthanum (La), cerium (Ce), neodymium (Nd), samarium (Sm), europium (Eu), terbium (Tb), ytterbium (Yb), and lutetium (Lu) in the profile of ferrallitic soils (Ferralsols) have been examined for the first time, using a wide range of research methods. The method of neutron activation analysis has revealed increased concentrations of radioactive and some rare earth elements. Electron microscopy, fragmentation radiography, and X-ray phase analysis have been applied to study the forms of the elements. The correlation between the particle-size distribution of soils and element concentrations in particular particle-size fractions has been revealed. The mineralogical composition of soils has been studied, and minerals-concentrators of radioactive and rare-earth elements—monazite, zircon, xenotime, thorite, and a rare-earth cerium phase with thorium—have been determined. A high Th concentration in the soil has been pointed out. Its significant part migrates with the destroyed material of alkaline thorium granites represented by fine solid particles with an admixture of accessory minerals. The anomalous levels of U, Th, Ce, and La in the studied soils are mainly related to the high content of these elements in the soil-forming rocks. The dependence of the increase in radon activity due to the uranium release from structural lattices of minerals and transition to other forms (adsorbed in particular) has been revealed. A possible effect of high concentration of radionuclides in rocks, soils, and groundwater and of the increased radon activity on the development of malignant tumors in people has been pointed out. According to the World Health Organization, the Guangdong province is characterized by the highest rate of nasopharyngeal cancer in the world.",
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T1 - Distribution of Radioactive and Rare-Earth Elements in Soils of the Guangdong Province, China

AU - Zlobina, A. N.

AU - Rikhvanov, L. P.

AU - Baranovskaya, N. V.

AU - Wang, N.

AU - Farhutdinov, I. M.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Abstract: The mineral and geochemical features of soils with increased natural radioactivity in the southern China province of Guangdong have been studied. The distribution patterns of uranium (U), thorium (Th), lanthanum (La), cerium (Ce), neodymium (Nd), samarium (Sm), europium (Eu), terbium (Tb), ytterbium (Yb), and lutetium (Lu) in the profile of ferrallitic soils (Ferralsols) have been examined for the first time, using a wide range of research methods. The method of neutron activation analysis has revealed increased concentrations of radioactive and some rare earth elements. Electron microscopy, fragmentation radiography, and X-ray phase analysis have been applied to study the forms of the elements. The correlation between the particle-size distribution of soils and element concentrations in particular particle-size fractions has been revealed. The mineralogical composition of soils has been studied, and minerals-concentrators of radioactive and rare-earth elements—monazite, zircon, xenotime, thorite, and a rare-earth cerium phase with thorium—have been determined. A high Th concentration in the soil has been pointed out. Its significant part migrates with the destroyed material of alkaline thorium granites represented by fine solid particles with an admixture of accessory minerals. The anomalous levels of U, Th, Ce, and La in the studied soils are mainly related to the high content of these elements in the soil-forming rocks. The dependence of the increase in radon activity due to the uranium release from structural lattices of minerals and transition to other forms (adsorbed in particular) has been revealed. A possible effect of high concentration of radionuclides in rocks, soils, and groundwater and of the increased radon activity on the development of malignant tumors in people has been pointed out. According to the World Health Organization, the Guangdong province is characterized by the highest rate of nasopharyngeal cancer in the world.

AB - Abstract: The mineral and geochemical features of soils with increased natural radioactivity in the southern China province of Guangdong have been studied. The distribution patterns of uranium (U), thorium (Th), lanthanum (La), cerium (Ce), neodymium (Nd), samarium (Sm), europium (Eu), terbium (Tb), ytterbium (Yb), and lutetium (Lu) in the profile of ferrallitic soils (Ferralsols) have been examined for the first time, using a wide range of research methods. The method of neutron activation analysis has revealed increased concentrations of radioactive and some rare earth elements. Electron microscopy, fragmentation radiography, and X-ray phase analysis have been applied to study the forms of the elements. The correlation between the particle-size distribution of soils and element concentrations in particular particle-size fractions has been revealed. The mineralogical composition of soils has been studied, and minerals-concentrators of radioactive and rare-earth elements—monazite, zircon, xenotime, thorite, and a rare-earth cerium phase with thorium—have been determined. A high Th concentration in the soil has been pointed out. Its significant part migrates with the destroyed material of alkaline thorium granites represented by fine solid particles with an admixture of accessory minerals. The anomalous levels of U, Th, Ce, and La in the studied soils are mainly related to the high content of these elements in the soil-forming rocks. The dependence of the increase in radon activity due to the uranium release from structural lattices of minerals and transition to other forms (adsorbed in particular) has been revealed. A possible effect of high concentration of radionuclides in rocks, soils, and groundwater and of the increased radon activity on the development of malignant tumors in people has been pointed out. According to the World Health Organization, the Guangdong province is characterized by the highest rate of nasopharyngeal cancer in the world.

KW - carcinogenicity

KW - Ferralsols

KW - Soil profile

KW - Thorium

KW - Uranium

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