Radioactivity and geochemical characteristics of cryoconite on the Tien Shan glacier.

ABSTRACT: The article reports on a study of the cryoconite contamination with anthropogenic and natural radionuclides, as well as ore caused elements, conducted on the Tuyuksu Glacier. The activity concentrations of anthropogenic radionuclides ¹³⁷Cs, ^239+240Pu, ²³⁸Pu, and ²⁴¹Am were determined, with maximum values of about 2000 Bq kg^-1, 35 Bq kg^-1, 1 Bq kg^-1, and 25 Bq kg^-1, respectively. An analysis of the radionuclide activity concentration ratios indicates that global fallout is the main and likely the only source of anthropogenic radionuclides. Natural isotopes ²³⁵U, ²³⁸U, and ²³²Th, along with their decay products were found to have a lithogenic origin. The study of the eleme

SUBMITTER: Miroshnikov A 

PROVIDER: S-EPMC12521563 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature