Abstract
The presence of organic micropollutants in the Llobregat River (Catalonia, Spain) has been investigated and the results interpreted by Principal Component Analysis (PCA). A deeper insight into the interpretation of the results was achieved by the extension of this analysis of the same samples including general water quality analytical parameters such as: total organic carbon, oxidability, biochemical oxygen demand after 5 days, dissolved oxygen, pH, suspended solids, anionic surfactants, total hydrocarbons, ammonia, nitrates, phenol index and total coliforms. PCA afforded the exploration of the main pollution sources of the Llobregat River as well as the characterization of the geographical and temporal distribution of these pollution sources.
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