Toxic substances can be isolated from the objects of biological origin by different methods. In case of intoxication with pesticides - derivatives of phosphoric acids - the following method is applied:

Answer options

1. Distillation with water steam from the alkaline medium
2. Infusion with water acidified with chloric acid
3. Infusion with alkalized water
4. Infusion with organic solvents
5. Dialysis from alkalized solutions