Accumulations of waste pesticides from manufacturing units of pesticides in rivers through drains are sources of environmental pollution. Search for matrices having a large capacity for retention of these pollutants is necessary.

We conducted an experimental study on the purification of a mixture of pesticides on a column filled with a matrix based on calcium phosphate (hydroxyapatite). The study provides a satisfactory extraction of organochlorines with a very good performance, organochlorines Landa-cyhalothrin, Délthaméthrine, Beta-endosulfon, Endosulfon-Sulfate, Landa-cyhalothrin, Tertadifon, Delthamethrine, Fenarimol and iprodione have achieved satisfactory recovery percentages.

The results and interpretations were confirmed by physico-chemical analyzes, using appropriate methods of investigation.