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

Table 1

The chemical composition of soils.

Soil	Chemical components (weight)
	SiO2	Al2O3	Fe2O3	TiO2	SO3	CaO	MnO	Others
Sandy	627.95	300.32	34.69	19.25	13.85	2.27	0.31	1.36
Clayey	441.87	328.39	167.37	34.86	17.12	1.55	3.23	5.61