Radioactivity concentrations and dose assessment in surface soil samples from east and south of Marmara region, Turkey

Abstract

The activity concentrations of 137Cs, 40K, 232Th, 238U and 226Ra were measured in surface soil samples from East and South of Marmara region, Turkey. The physico-chemical parameters (organic matter, CaCO3 contents and pH-value) of the soil samples were determined in the samples collected from 100 sampling stations. The average activity concentrations of 137Cs, 40K, 232Th, 238U and 226Ra were found to be 27.46+/-21.84, 442.51+/-189.85, 26.63+/-15.90, 21.77+/-12.08 and 22.45+/-13.31 Bq kg(-1), respectively. The mean value of total annual external gamma radiation dose equivalent for the natural radionuclides was calculated to be 54.86 microSv. The current data were compared with those found in the other locations of Turkey and different countries.

Radionuclide concentrations in soil and lifetime cancer risk due to gamma radioactivity in Kirklareli, Turkey

“…The activity concentration of 232 Th in Kirklareli (40 AE 18 Bq kg À1 ) was slightly higher than the World's average (30 Bq kg À1 ) (UNSCEAR, 2000). As shown in Table 5, the soil radionuclides' activity concentrations were comparable to other studies conducted in Turkey (Degerlier et al, 2008;Kam and Bozkurt, 2007;Kiliç et al, 2007;Kurnaz et al, 2007). Degerlier et al and Kiliç et al determined slightly lower activity concentrations of 238 U and 232 Th compared to this study (Degerlier et al, 2008;Kiliç et al, Kurnaz et al, 2007).…”

“…Measuring terrestrial gamma dose rates is also essential since gamma radiation provides information concerning excess lifetime cancer risks. Yet in Turkey, there are only a limited number of studies which evaluate soil radioactivity and terrestrial gamma dose rates (Degerlier et al, 2008;Kam and Bozkurt, 2007;Kiliç et al, 2007;Kurnaz et al, 2007;Erees et al, 2006;Karahan and Bayulken, 2000;Merdanoglu and Altınsoy, 2006;Bozkurt et al, 2007). Hence the objective of this study is to evaluate and map soil radionuclides' radioactivity concentrations as well as environmental outdoor gamma dose rates in Kirklareli.…”

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

“…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.…”

“…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.…”

“…The mean activity concentration of 232 Th in the these gas well areas has been found to be higher than those of the Turkey [17], Kirklareli [18], Ireland [31], Louisiana-USA [29], French rivers-1 [19], French rivers-2 [20], China [15] and Hungary [30],. 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.…”