3 10 1 mass of tin is poured into a reactor the purification process is performed by following the procedure described in example 23 but as a sorbent use is made of 0 25 liter of anionite ab 17 obtained as described in example 26 the process is carried out in 2 5 liter of 2 n hcl h 2 so 4 1 2 with stirring 200 rpm for 15 minutes at 30 u00b0 c the final concentration of tin in gallium is 2 10 1 mass 1 liter of mercury containing a tin impurity in an amount of 6 10 1 mass is poured into a reactor the process of mercury purification is carried out by following the procedure described in example 23 but as a sorbent use is made of anionite ab 17 obtained as described in example 26 in an amount of 0 2 liter the process is carried out in 2 liters of 1 n hf 8 n hcl 1 1 with stirring 150 rpm at 30 u00b0 c for 20 minutes the final concentration of impurity in mass is 7 10 2 0 5 liter of mercury containing an impurity of ni in an amount of 3 10 3 mass is poured into a reactor the process of metal purification is performed by following the procedure described in example 23 but as a sorbent use is made of anionite ab.