Английский
Тоҷикӣ 
Русский 
2022
RESEARCH ON THE CONTENT OF RADIOACTIVE ISOTOPES AND HEAVY METALS IN SOIL AND DUST AEROSOL SAMPLES ON THE RIGHT BANK OF THE SYR-DARIA WITHIN KHUJAND
Файл Ном Сабт карда шуд 
Rahmatov Muhamadi NuridinovichRESEARCH ON THE CONTENT OF RADIOACTIVE ISOTOPES AND HEAVY METALS IN SOIL AND DUST AEROSOL SAMPLES ON THE RIGHT BANK OF THE SYR-DARIA WITHIN KHUJAND 37
Authors: Rahmatov Muhamadi Nuridinovich - Theacher at the Department of General Physics and Solid State Khujand State University named after academician B.G.Gafurov (Tajikistan Republic, Khujand)
JOURNAL NUMBER: 2(61). YEAR OF ISSUE: 2022. LANGUAGE OF THE ARTICLE: Tajik
ANNOTATION
The results of a study of the elemental composition of soil samples and atmospheric aerosol samples collected on the right bank of the Syr-Darya within Khujand are presented. An analysis of data on the distribution of radioactive isotopes of the uranium and thorium series, 40K and other technogenic isotopes was carried out. The obtained results are compared with the data of South-Central Tajikistan. Interannual variations in the content of some studied HMs in aerosol samples on the right bank of the Syr Darya within Khujand are presented. The average high content of lead (284.83 ppm) in 2019, arsenic (43.73 ppm) in 2020, zinc (2426.2 ppm) was recorded in 2021. The lowest average concentration of Pb (29.4 ppm) and Zn (65.3 ppm) was noted in 2017, the minimum average value of As (9.6 ppm) was obtained in 2021. A correlation analysis of the concentrations of some heavy metals was carried out. The correlation between the concentrations of many heavy metals is low, an average correlation in atmospheric aerosol samples is observed between Cu and TiO2 (r = 0.62) and a high correlation is found between the concentrations of Sr and Cr (r = 0.8), As and Cu (r = 0 .74), Co and MnO (r = 0.83). A significant positive correlation in soil samples was noted between the concentrations of Pb and Zn, MnO and TiO2 (r = 0.9). In addition, high correlations were found between As and Cu, V and TiO2 (r = 0.8). The reverse trajectories of air mass movement were constructed using the HYSPLIT method to determine the location of the sources of dust formation, in which high concentrations of zinc were noted.
KEY WORDS
isotope analysis, elemental composition, radioactive isotope, heavy metals, correlation analysis, backtrajectories, atmospheric aerosol.