Samples were submitted to gamma irradiation source Co60
At the Boukhalef Ionization Station of Tangier (North of Morocco).
The local dose rate was determined by Fricke solution.
Samples were irradiated with g-rays at the dose rate 3 Gy/min,
and at absorbed doses ranging from 0 to 14 kGy. Controls (noirradiated wastewater) were carried out under similar conditions and held under the same environmental conditions.