The Flotational Mechanism of Etobicoke Creek's Self-Purification
  A flotational mechanism of Etobicoke Creek's self-purification has been investigated. It is shown that the froth contains a high concentration of polluting agents. Chemical analyses of the top layer of surface water in comparison to both before and after froth collector in the course of a year are provided. As a result, the concentrations of pollutants by utilizing the model froth collector are decreased. 
A.I. Fisenko and V. Mikhailovskii