M. R. Mamedova
al-Farabi Kazakh National University, Faculty of Physics and Technology
Kazakhstan

050070, Almaty, al-Farabi Ave, 71

A. B. Ibraimov
al-Farabi Kazakh National University, Faculty of Chemistry and Chemical Technology
Kazakhstan

050070, Almaty, al-Farabi Ave, 71

A. N. Kunanov
al-Farabi Kazakh National University, Faculty of Chemistry and Chemical Technology
Kazakhstan

050070, Almaty, al-Farabi Ave, 71

M. B. Alimzhanova
al-Farabi Kazakh National University, Faculty of Physics and Technology; al-Farabi Kazakh National University, Faculty of Chemistry and Chemical Technology
Kazakhstan

050070, Almaty, al-Farabi Ave, 71

Z. A. Tukenova
LLP Kazakh U.U. Uspanov Research Institute of Soil Science and Agricultural Chemistry
Kazakhstan

050060, Almaty, al-Farabi Ave, 75 В