Research Article

Gamma Emitting Radionuclides in Soils from Selected Areas in Douala-Bassa Zone, Littoral Region of Cameroon

Table 1

Specify activities of 226Ra, 232Th, and 40K in soil samples from Campuses 1 and 2 of the University of Douala.

Sampling sitesSample IDLatitudeLongitudeSpecific activity (Bq/kg)
226Ra 232Th 40K

Campus 1UD0104°03′20.8′′N09°43′57.6′′W
UD0204°03′25.1′′N09°44′00.1′′W
UD0304°03′22.6′′N09°44′07.1′′W
UD0404°03′19.7′′N09°44′04.1′′W
UD0504°03′17.2′′N09°44′02.9′′W
UD0604°03′14.8′′N09°44′08.0′′W
UD0704°03′16.7′′N09°44′11.0′′W

Minimum
Maximum
Average values ± standard deviation

Campus 2UD0804°03′29.7′′N09°44′26.5′′W
UD0904°03′31.0′′N09°44′30.3′′W
UD1004°03′22.0′′N09°44′30.0′′W
UD1104°03′25.1′′N09°44′36.8′′W
UD1204°03′21.5′′N09°44′39.0′′W
UD1304°03′16.5′′N09°44′39.8′′W
UD1404°03′18.4′′N09°44′37.5′′W
UD1504°03′16.8′′N09°44′35.5′′W
UD1604°03′24.9′′N09°44′42.2′′W
UD1704°03′21.2′′N09°44′45.2′′W
DU1804°03′18.2′′N09°44′42.7′′W

Minimum
Maximum
Average values ± standard deviation

Worldwide (UNSCEAR 2000)
 Range17.00–60.0011.00–68.00140.00–850.00
 Average35.0030.00400.00