Table of Contents Author Guidelines Submit a Manuscript
The Scientific World Journal
Volume 2014, Article ID 723041, 10 pages
http://dx.doi.org/10.1155/2014/723041
Research Article

Gamma-Ray Attenuation to Evaluate Soil Porosity: An Analysis of Methods

1Department of Physics, State University of Ponta Grossa (UEPG), Avenue Carlos Cavalcanti 4748, 84.030-900 Ponta Grossa, PR, Brazil
2Department of Soil Science, State University of Ponta Grossa (UEPG), Avenue Carlos Cavalcanti 4748, 84.030-900 Ponta Grossa, PR, Brazil

Received 26 August 2013; Accepted 10 December 2013; Published 29 January 2014

Academic Editors: S. Kottou and N. Nishchal

Copyright © 2014 Luiz F. Pires and André B. Pereira. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Soil porosity ( ) is of a great deal for environmental studies due to the fact that water infiltrates and suffers redistribution in the soil pore space. Many physical and biochemical processes related to environmental quality occur in the soil porous system. Representative determinations of are necessary due to the importance of this physical property in several fields of natural sciences. In the current work, two methods to evaluate were analyzed by means of gamma-ray attenuation technique. The first method uses the soil attenuation approach through dry soil and saturated samples, whereas the second one utilizes the same approach but taking into account dry soil samples to assess soil bulk density and soil particle density to determine . The results obtained point out a good correlation between both methods. However, when is obtained through soil water content at saturation and a 4 mm collimator is used to collimate the gamma-ray beam the first method also shows good correlations with the traditional one.