Table 1 Global radioactivity features of Type 1 and Type 2 soil samples performed by gamma spectrometry. Minimum and maximum radionuclides activities detected in Type 1 and Type 2 soil samples, calculated as the difference between the sample and the background values, are shown in Bq/kg. If available, in subscript, for each activity value, the ratios between the sample and the background are shown in percent. Sigma value are shown in percent. Sample mass = 0.75 kg. Gamma spectrometry analytical parameters: detector system = Germanium (ORTEC); start – stop channels = 2.42 – 1988.50 keV; peak rejection level = 30.00%; background width with average of 3 points; decay during acquisition taken in count; adsorption correction = sand (on max activity value). n.a. = not available.

From: Experimental system to displace radioisotopes from upper to deeper soil layers: chemical research