The Role of Nanoparticles in Radioactive Contamination of Area Surrounding Khujand in Tajikistan

The paper presents the elemental composition of soil and atmospheric aerosol samples collected on the right bank of the Syr Darya river in Khujand. The analysis is given to the distribution of the uranium and thorium decay series, ⁴⁰K, and other induced radionuclides. The obtained results are compared to the data on the environment in south-central Tajikistan. It is shown that atmospheric nanoparticles are one of the means of the radionuclide dispersal.