Distribution of radionuclides in the river sediments and coastal soils of Chittagong, Bangladesh and evaluation of the radiation hazard

Measurement of Radioactive Impact of the Gas Well Accident on Environment of Sylhet Division in Bangladesh

“…It has been found to be about 0.51 times and 0.92 times for Magurchhera and 0.50 times and 0.89 times for Haripur than the worldwide value [4] ( Table 3) and world average [12] (Table 3) values respectively. The mean specific radioactivity level of 40 K in the soil samples has been found to be higher than those of the regional study [22], Ireland [31], Hungary [30], Egypt [23], but the activity concentration of 40 K has been found to be lower than those of the Turkey [17], Kirklareli [18], Spain [16], French rivers-1 [19], French rivers-2 [20], Iran [21], Southern Districts of Bangladesh [27], Kestanbol [24], China [15], South Cameroon [25], Northern Districts of Bangladesh [7], and India [26] (Table 2). The specific activity of 40 K has been found to be about 1.02 times and 1.15 times higher for Magurchhera area than the worldwide value [4] (Table 3) and world average [12] (Table 3) value respectively; similar results have also been found for Haripur area.…”

“…It is about to 1.6 times and 2.11 times higher for Magurchhara and 1.74 times and 2.29 times higher for Haripur area than the worldwide value [4] (Table 3) and world average [12] (Table 3) respectively. However, the mean activity concentration of 232 Th has been found to be lower than those of the Kestanbol [24], Iran [21], regional study [22], Egypt [23], South Cameroon [25], India [26], Southern Districts of Bangladesh [27], China [28] and Northern Districts of Bangladesh 7 ( Table 2). …”

“…The mean specific radioactivity level of 226 Ra in the study areas has been found to be higher than those of the Turkey [17], India [26], China [15], although it has been found to be lower than those of the Kestanbol [24], Kirklareli [18], Spain [16], French rivers-1 [19], French rivers-2 [20], Ireland [31], Iran [21], regional study [22], Egypt [23], Southern Districts of Bangladesh [27], South Cameroon [25], Louisiana-USA [29] and Northern Districts of Bangladesh [7] (Table 2). It has been found to be about 0.51 times and 0.92 times for Magurchhera and 0.50 times and 0.89 times for Haripur than the worldwide value [4] ( Table 3) and world average [12] (Table 3) values respectively.…”

Occurrences of NORMS and137Cs in soils of the Singhbhum region of Eastern India and associated Radiation Hazard

“…Equation (1) shows that 1 Bq/kg of 226 Ra, 0.7 Bq/kg of 232 Th or 13 Bq/kg of 40 K will generate the same gamma ray dose rate (Chowdhury et al, 1999). The Ra eq for the soil samples are given in Table V.…”

Assessment of radioactive pollution around a fertilizer factory complex in the North-Eastern part of Bangladesh

“…Also, the assessment of fluoride and heavy metal pollution caused by such a plant was the objective of many investigations (El-Bahi et al, 2004;Wang et al, 2005;Loganathan et al, 2007). In particular, elevated concentrations of several natural radionuclides were found in water and soils collected from different rivers, beaches, oceans and other landscapes (UNSCEAR, 1982(UNSCEAR, , 1988(UNSCEAR, , 2000Alam et al, 1999;Chowdhury et al, 1999;Ghose et al, 2000;Labidi et al, 2002;Somlai et al, 2002;Mireles et al, 2003;Cevik. et al, 2006;Chowdhury et al, 2006;Huy and Luyen, 2006;Khalifa, 2004;Mehra et al, 2007;Uchida et al, 2007;Radenkovic et al, 2009;Salbu and Skipperud, 2009).…”