The activity concentrations of radionuclides 226Ra, 232Th and 40K of soil samples in the case of Metekel Zone, Ethiopia

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Table 3

The calculated results for radiological health indices parameters in the different districts in Metekel and the soil types.

	Ra_eq (Bq kg⁻¹)	I_γ	I_α	D (nGyh⁻¹)	AED (mSvy⁻¹)	Ra/Th	Th/Ra
Districts
Guba	143 ± 54	0.52 ± 0.46	0.30 ± 0.05	126 ± 39	0.62 ± 0.20	1.40 ± 0.24	0.72 ± 0.10
Dangur	169 ± 46	0.60 ± 0.17	0.35 ± 0.09	148 ± 41	0.73 ± 0.20	1.35 ± 0.34	0.74 ± 0.11
Pawe	187 ± 62	0.60 ± 0.22	0.35 ± 0.12	161 ±54	0.79 ± 0.27	1.08 ± 0.20	0.93 ± 0.13
Mandura	171 ± 46	0.61 ± 0.17	0.20 ± 0.11	143 ± 41	0.70 ± 0.20	0.52 ± 0.12	1.93 ± 0.33
Wenbera	190 ± 62	0.68 ± 0.21	0.21 ± 0.09	160 ± 50	0.79 ± 0.25	0.50 ± 0.20	2 ± 0.30
Bulen	222 ± 57	0.79 ± 0.21	0.37 ± 0.06	192 ± 49	0.94 ± 0.24	0.92 ± 0.08	1.08 ± 0.10
Dibate	170 ± 45	0.60 ± 0.16	0.28 ± 0.07	143 ± 38	0.70 ± 0.19	0.80 ± 0.03	1.26 ± 0.20
Types
Sandy loam	133 ± 52	0.48 ± 0.19	0.25 ± 0.10	116 ± 46	0.60 ± 0.23	1.17 ± 0.25	0.86 ± 0.08
Sands	188 ± 45	0.66 ± 0.16	0.38 ± 0.11	162 ± 40	0.80 ± 0.20	1.23 ± 0.10	0.20 ± 0.08
Silt	229 ± 57	0.81 ± 0.20	0.39 ± 0.11	194 ± 49	0.95 ± 0.24	0.87 ± 0.22	1.30 ± 0.11
Clay	210 ± 41	0.74 ± 0.14	0.34 ± 0.11	177 ± 35	0.87 ± 0.17	0.77 ± 0.05	1.30 ± 0.05
Silty clay	229 ± 59	0.80 ± 0.21	0.47 ± 0.09	196 ± 50	0.96 ± 0.25	1.15 ± 0.22	0.87 ± 0.06
Clay loam	215 ± 65	0.76 ± 0.23	0.41 ± 0.08	185 ± 55	0.91 ± 0.48	1.08 ± 0.04	0.93 ± 0.28

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