Uso de marcadores moleculares para determinação de fontes de contaminação na plataforma interna (rio Acaraú, costa cearense)

Abstract

The increasing population occupancy in the coastal zone is related to the increase of the environmental contamination mainly in water bodies, due to the anthropic activities. Among the main organic contaminants that reach the different environmental matric es are the Polycyclic Aromatic Hydrocarbons (HPAs). Their concentrations may be toxic and are widely distributed throughout the world. This work aimed to identify the levels and sources of PAHs in the continental shelf adjacent to the Acaraú River. The sum of the concentration of levels corresponding to the 16 priority USEPA ranged from <LD to 180 ng.g - 1. The diagnostic ratios used (Fl/(Fl+Pir), BaA/(BaA+BghiP), IP/(I+BghiP), Ant/(Ant+Fen), Flrt/Pir, IP/BghiP, BaA/Cri, BMM/AMM) indicated in their majority a greater petrogenic contribution, due to the navigating activities of the area. According to CCME, the sampling site has no adverse effect on biota.