The induced polarization method applied to soils polluted by hydrocarbons
Por:
Andrade, AT, Gonzalez, AEL
Publicada:
1 ene 2013
Categoría:
Earth and Planetary Sciences (miscellaneous)
Resumen:
The evidence obtained by some authors devoted to electrical methods has
shown that when a conventional resistivity survey is performed, it is
not possible to differentiate areas with similar electrochemical
behavior of both the organic and inorganic origin. Therefore, in recent
years the method of Induced Polarization (IP) has been applied to soil
contamination problems, showing encouraging results. This technique was
tested, working in the time domain through an electrical tomography
profile of resistivity and chargeability data, which was conducted at a
site contaminated by hydrocarbons located in the north of Mexico City,
where stratigraphy and distribution of the contaminant were complex.
The hydrocarbons were found in a free and dissolved phase, which
provided the conditions for taking soil and water samples. These samples
were sent to a laboratory for chemical analysis, which depicted benzene
concentration in four wells.
The obtained results show that it is possible to define areas of large
concentration of pollutants, by correlating electrical information,
capacitive and qualitatively, with the information from the Cole-Cole
parameters, demonstrating the potential of induced polarization method
in pollution problems.
Filiaciones:
Andrade, AT:
Univ Nacl Autonoma Mexico, Fac Ingn, Delegacion Coyoacan 04510, Mexico
Gonzalez, AEL:
Univ Nacl Autonoma Mexico, Fac Ingn, Delegacion Coyoacan 04510, Mexico
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