Survey of ground water pesticide pollution in rural areas of Catalonia (Spain)

摘要

A systematic survey of the quality status of the main aquifers in rural areas of Catalonia (Spain) regarding pesticide pollution has been carried out. A total number of 139 wells, distributed among 13 different hydrogeological units have been sampled and analyzed by GCMS and GC-ECD, during the period 1997-98. Pesticides monitored were selected among triazine herbicides, organochlorine and organophosphorus insecticides. A positive presence of pesticides has been detected in 84.2 of the samples analyzed, 23.7 of them exceeding the requirements of the EU drinking water Directive (98/83/CE). Organochlorine insecticides were present in 62.6 of the samples, triazines in 49 and organophosphorus insecticides in 28.8. The results obtained have been interpreted by Principal Component Analysis. References: 20