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12 organonitrogen and -phosphorus pesticides were identified in precipitation samples (wet and dry deposition) from 5 locations in Northern Germany and the island of Heligoland (North Sea). The temporal development of the concentrations as well as deposition rates of three triazine herbicides, atrazine, simazine and terbutylazine, and of the metabolite desethylterbutylazine in total deposition samples...