Determination of Activity Concentration of Natural Radionuclides and Radiation Hazards’ Assessment of Building Materials in High Background Radiation Areas of Homa and Ruri, Kenya

Table 1

Activity concentration of ⁴⁰K, ²²⁶Ra, and ²³²Th (Bq/kg) in Homa samples.

Sample ID	^226Ra (Bq/kg)	^232Th (Bq/kg)	^40K (Bq/kg)
Homa1	259 ± 21	598 ± 30	946 ± 47
Homa2	178 ± 14	670 ± 34	1294 ± 65
Homa3	67 ± 5	493 ± 25	1036 ± 52
Homa4	129 ± 10	631 ± 32	1103 ± 55
Homa5	31 ± 2	119 ± 6	612 ± 31
Homa6	216 ± 17	353 ± 18	766 ± 38
Homa7	51 ± 4	331 ± 17	753 ± 38
Homa8	45 ± 4	513 ± 26	1033 ± 52
Homa9	157 ± 13	126 ± 6	789 ± 39
Homa10	16 ± 2	84 ± 4	550 ± 28
Homa11	223 ± 18	420 ± 21	991 ± 50
Homa12	220 ± 18	417 ± 21	827 ± 41
Homa13	78 ± 6	378 ± 19	964 ± 48
Homa14	191 ± 15	479 ± 24	850 ± 43
Homa15	72 ± 6	367 ± 18	889 ± 44
Average	129 ± 10	399 ± 20	894 ± 45