Fate of atrazine and trifluralin from an industrial waste dumping at the Llobregat River. Presence in fish, raw and finished water.

Analysis carried out after fish mortality in an industrial area in the neighbourhood of the Llobregat River, water supplier for Barcelona and its area, led us to identify two herbicides (atrazine and trifluralin) in the wastewaters from an industrial sewage where, among other factories one at least, is devoted to pesticide manufacturing. The fate of these herbicides is followed in fish (dorsal muscle), raw water entering the water works plant and tap water. Analyses by GC, GC/MS/DS and mass fragmentography were routinely employed.