Origen y distribución de los hidrocarburos policíclicos aromáticos en sedimentos actuales de la Laguna de El Hito (España central)
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Abstract
Se llevó a cabo la evaluación ambiental y el estudio del estado actual de
la cuenca de la Laguna de El Hito referido a 18 hidrocarburos policíclicos
aromáticos (PAHs) de 2 a 6 anillos bencénicos. Se determinó su origen a partir
de diversos índices (%naftaleno, Fen/Ant y Flu/Pir), interpretándose tanto
fuentes no antropogénicas (petrogénica) como antropogénicas (pirogénica).
Se obtuvieron los mapas de distribución de las concentraciones de PAHs y de
sus índices para localizar los puntos de concentraciones más elevadas. Ningún
PAH superó las concentraciones marcadas por los Niveles Genéricos de
Referencia (NGR) para la salud humana en los distintos usos del suelo del
R.D.09/2005. Los PAHs con las mayores concentraciones fueron el naftaleno
y el fenantreno
Environmental evaluation and analysis of the current state of El Hito Lake Basin referred to 18 polycyclic aromatic hydrocarbons (PAHs) with 2 to 6 benzene rings was carried out. Different indexes were used to determine the source of PAHs (% naftalene, Phe/Ant and Flu/Pyr). Both non anthropogenic (petrogenic) and anthropogenic (pyrogenic) sources were interpreted. Distribution maps for PAHs and indexes were plotted to locate the position of the higher concentrations and, therefore, their possible sources. None of these compounds showed concentrations above the Soil Screening Levels (SSL) for human health in the different uses of soil as is established in R.D.09/2005. The ones that reached the highest concentrations were naphthalene and phenanthrene
Environmental evaluation and analysis of the current state of El Hito Lake Basin referred to 18 polycyclic aromatic hydrocarbons (PAHs) with 2 to 6 benzene rings was carried out. Different indexes were used to determine the source of PAHs (% naftalene, Phe/Ant and Flu/Pyr). Both non anthropogenic (petrogenic) and anthropogenic (pyrogenic) sources were interpreted. Distribution maps for PAHs and indexes were plotted to locate the position of the higher concentrations and, therefore, their possible sources. None of these compounds showed concentrations above the Soil Screening Levels (SSL) for human health in the different uses of soil as is established in R.D.09/2005. The ones that reached the highest concentrations were naphthalene and phenanthrene







