Resumen de Microcontaminantes orgánicos en los ríos de México: El caso del río Nexapa.
Amado Navarro, Jorge Herrera, José Luis Marrugo Negrete, Josep Bayona, Lorenzo Morales
Emerging contaminants (EC) comprise endocrine disrupting compounds, pharmaceuticals and personal care products (PPCPs), among others, all of anthropogenic origin. Little has been reported about their presence in Mexican rivers. The aim of the present work is the study of ECs in surface waters of the Nexapa River, México. Samples from stations along the river upper course were extracted and analyzed by GC/MS in sampling campaigns conducted in 1999-2000, 2002-2005 and 2012-2013. Many of the identified compounds are used in personal care products and flavors and fragances of food. Concentrations in river samples ranged from non--1. The higher concentrations were detected for caffeine, galaxolide, methyl dihydrojasmonate, alkylphenols, naproxen, and UV-filters. They were also found in heavily polluted sewer discharges, which explain their presence in the river. EC were also detected in samples from the Zahuapan (Tlaxcala), Atoyac (Puebla), Sordo (Veracruz) and Sinú (Colombia) rivers. Retention data of studied compounds is provided.
