TY CONF TI SELECTION OF COMPONENTS FOR THE CREATION OF A COMPLEX CARRIER IN THE SORPTION IMMOBILIZATION OF TRACE ELEMENTS KW agar KW chitosan KW coal KW immobilization JO I International Congress “The Latest Achievements of Medicine, Healthcare, and Health-Saving Technologies” AU Belokurova, E.. AU Sargsyan, M.. PY 2023 PB Kemerovo State University