Isotopes of uranium in waters and ice of Pamir – Alai

  • Илона Валерьевна Матвеева
  • Нүргүл Нурсапина
  • Тамара Тузова
  • Балнур Шыныбек
Keywords: uranium isotopes, alpha-spectrometry, non-equilibrium uranium, natural waters, ice, Pamir-Alai.

Abstract

The article presents the results of determination concentrarion and isotope composition of uranium in waters and ice of the Pamiro-Alai. The obtained experimental data are the basis of studying of the regularities of the formation of the effluent of mountain rivers. The special significance of this work related with the transbundary of this region and the interest of the neighboring countries. Sampling was carried out during fieldwork in 2016 under the USAID-Afghanistan PEER454 project. Determination of uranium isotopes was carried out using high-resolution alpha-spectrometry after radiochemical isolation and purification. The main objects of this study are Kyzylsu and Muksu rivers with their tributaries, as well as the ice of this region. Three genetic types were determined based on the obtained experimental data. The first type includes atmospheric precipitation and young ice (ice from the glacier of Lenin and a spring near the Ters-Agar passage). The second type of water is characteristic of waters which have contact with uranium enriched rocks (the estuary of Kashkasu river). The third type of water is waters of deep circulation with active water exchange in mountain ranges with a high uranium concentration (eastern springhead of the Kyzylsu river). The calculations showed that the main source of most of the studied water bodies are atmospheric precipitation.

References

Литература
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Published
2018-11-29
How to Cite
Матвеева, И., Нурсапина, Н., Тузова, Т., & Шыныбек, Б. (2018). Isotopes of uranium in waters and ice of Pamir – Alai. Chemical Bulletin of Kazakh National University, (3). Retrieved from https://bulletin.chemistry.kz/index.php/kaznu/article/view/1006
Section
Environmental Chemistry