Uranium and thorium behavior in groundwater of the natural spa area "choygan mineral water" (East Tuva)

Y. Kopylova, N. Guseva, A. Shestakova, A. Khvaschevskaya, K. Arakchaa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The natural spa area "Choygan mineral waters", a unique deposit of natural carbon dioxide mineral waters in Siberia, is located in the Eastern Sayan Mountains. There are 33 spring discharges in this area. Spring waters are mainly of HCO3-Na-Ca type. TDS varies from 300 mg/L to 2600 mg/L, the temperature ranges from 7 °C (in spring 33) to 39 °C (in spring 12), pH varies from 5.9 to 8.3, and the value of the oxidation-reduction potential is from -170 mV to 236 mV. All studied waters were divided into two groups according to their temperature and geochemical conditions: cold fresh water in oxidizing environment and warm slightly brackish water in reducing environment. The uranium concentration varies from 0.7 to 14 μg/l and the thorium concentration varies from 0.001 to 0.33 μg/l in the studied waters. The predominant uranium complexes are (UO2(CO3)3)4-, (UO2(CO3)2)2-, UO2CO3, (UO2(PO4)2)4- in the waters in oxidizing and reducing environments. It was found that acid-alkaline and oxidizing-reducing conditions were the determining factors for uranium behavior and speciation in the studied waters. The pH conditions are determining factors for thorium behavior and speciation in the studied waters. In slightly acidic water the predominant thorium species is negatively charge complex (ThCO3(OH)3)- (more than 95%).

Original languageEnglish
Title of host publicationIOP Conference Series: Earth and Environmental Science
PublisherInstitute of Physics Publishing
Volume27
Edition1
DOIs
Publication statusPublished - 10 Nov 2015
Event19th International Scientific Symposium on Problems of Geology and Subsurface Development, PGON 2014 - Tomsk, Russian Federation
Duration: 6 Apr 201510 Apr 2015

Other

Other19th International Scientific Symposium on Problems of Geology and Subsurface Development, PGON 2014
CountryRussian Federation
CityTomsk
Period6.4.1510.4.15

Fingerprint

thorium
uranium
groundwater
water
spring water
brackish water
warm water
cold water
mineral water
natural area
carbon dioxide
temperature
mountain
acid

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Kopylova, Y., Guseva, N., Shestakova, A., Khvaschevskaya, A., & Arakchaa, K. (2015). Uranium and thorium behavior in groundwater of the natural spa area "choygan mineral water" (East Tuva). In IOP Conference Series: Earth and Environmental Science (1 ed., Vol. 27). [012034] Institute of Physics Publishing. https://doi.org/10.1088/1755-1315/27/1/012034

Uranium and thorium behavior in groundwater of the natural spa area "choygan mineral water" (East Tuva). / Kopylova, Y.; Guseva, N.; Shestakova, A.; Khvaschevskaya, A.; Arakchaa, K.

IOP Conference Series: Earth and Environmental Science. Vol. 27 1. ed. Institute of Physics Publishing, 2015. 012034.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kopylova, Y, Guseva, N, Shestakova, A, Khvaschevskaya, A & Arakchaa, K 2015, Uranium and thorium behavior in groundwater of the natural spa area "choygan mineral water" (East Tuva). in IOP Conference Series: Earth and Environmental Science. 1 edn, vol. 27, 012034, Institute of Physics Publishing, 19th International Scientific Symposium on Problems of Geology and Subsurface Development, PGON 2014, Tomsk, Russian Federation, 6.4.15. https://doi.org/10.1088/1755-1315/27/1/012034
Kopylova Y, Guseva N, Shestakova A, Khvaschevskaya A, Arakchaa K. Uranium and thorium behavior in groundwater of the natural spa area "choygan mineral water" (East Tuva). In IOP Conference Series: Earth and Environmental Science. 1 ed. Vol. 27. Institute of Physics Publishing. 2015. 012034 https://doi.org/10.1088/1755-1315/27/1/012034
Kopylova, Y. ; Guseva, N. ; Shestakova, A. ; Khvaschevskaya, A. ; Arakchaa, K. / Uranium and thorium behavior in groundwater of the natural spa area "choygan mineral water" (East Tuva). IOP Conference Series: Earth and Environmental Science. Vol. 27 1. ed. Institute of Physics Publishing, 2015.
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