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Silvana Irene Torri
Marisol Natalia Cabrera
Cecilia Alberti


Polycyclic aromatic hydrocarbons (PAHs) are of great environmental concern due to their widespread occurrence and persistence. Anthracene and phenanthrene (C14H10) are two priority pollutants that are found in high concentrations in PAHs-contaminated surface soils. The objective of this study was to analyze the capability of endogenous soil microorganisms of a pristine soil of the Pampas region, Argentina, to dissipate two isomers: anthracene and phenanthrene. Nutrient availability and the effects of ryegrass (Lolium perenne L.) on these PAHs´ dissipation were also evaluated. After 100 days, both contaminants were significantly degraded in root-free soils by autochthonous microorganisms. L. perenne significantly enhanced microbial degradation. The dissipation of both pollutants in the rhizosphere was accompanied by higher values of total bacteria counts at the end of the experimental period. No biostimulation effect was observed. In all cases, the dissipation of phenanthrene was significantly higher than anthracene. These results point to the important role of indigenous PAH degrading microorganisms, even present in a non-polluted soil. 


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Biografía del autor/a

Silvana Irene Torri, Cátedra de Química General e Inorgánica Departamento de Recursos Naturales y Ambiente 011 4 524 8000 int 8231 Facultad de Agronomía, Universidad de Buenos Aires 1417 DSE Argentina

Profesora Adjunta

Cátedra de Química General e Inorgánica
Departamento de Recursos Naturales y Ambiente Facultad de Agronomía, Universidad de Buenos Aires  

Marisol Natalia Cabrera, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires Intendente Güiraldes 2160 - Ciudad Universitaria - C1428EGA CABA

Licenciada en Ciencias Biológicas, UBA. Doctora en Ciencias Químicas, UBA



Cecilia Alberti, Instituto Nacional de Tecnología Industrial (INTI) Avenida General Paz 5445, Buenos Aires, Argentina

Ingeniera Quimica, Jefe de Laboratorio. Cromatografia y Espectrometria de masas

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