Content of radionuclides (226Ra, 232Th, 40K, 137Cs) in soils of the North-West region of Russia formed on three types of soil forming rocks

Elena Mingareeva, Boris Aparin, Elena Sukhacheva, Natalia Sanzharova, Evgeny Shevchuk, Vitaly Terleev, Aleksandr Nikonorov, Luka Akimov

Research outputpeer-review

Abstract

The results of a study of the content of natural radionuclides (NR) (226Ra, 232Th, 40K) and technogenic 137Cs in soil samples formed on the most common types of soil-forming rocks of the North-West: lakeglacial (non-boulder and tape clay), glacial and water-glacial deposits are presented. Soil sections laid in the Pskov, Novgorod and Leningrad regions. The granulometric composition in the upper part of the soil profile is lighter than in the parent rock. This is reflected in the NR content in the profile of these soils: with a decrease in the fractions of physical clay and silt, the content of 226Ra, 232Th and 40K decreases. This is due to the fixation of natural radionuclides by secondary clay minerals. According to the increase in the average specific activity of all NRs, the soils form the following sequence: soils on water-glacial deposits soils on moraines - soils on lake-glacial deposits. A comparison of the average specific activity of natural radionuclides and their ranges in the upper part of the soil (0-5, 5-10 and 10-20 cm) and in the parent rock (90-100 cm) revealed a higher content of radionuclides in parent rocks (lake-glacial and moraine deposits). In the soils on water-glacial deposits, no significant difference was found.

Original languageEnglish
Article number09018
JournalE3S Web of Conferences
Volume175
DOIs
Publication statusPublished - 29 Jun 2020
Event13th International Scientific and Practical Conference on State and Prospects for the Development of Agribusiness, INTERAGROMASH 2020 - Rostovon-Don
Duration: 26 Feb 2020 → …

Scopus subject areas

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

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