Studying of Po-210 and Pb-210 Deposition in Some Lichen Species in Manisa, Turkey

WOS: 000445270600013PubMed: 30132018Lichens are very useful for monitoring of the radionuclide deposition because having a high efficiency capturing the radionuclides from the atmospheric fallout. In the present work, Po-210 and Pb-210 deposition in some lichen species were determined using an alpha spectrometer. Different lichens were collected around Demirci-Manisa and investigated their uses as biomonitor for Po-210 and Pb-210 deposition. The highest activity concentrations for Po-210 and Pb-210 were detected in Neofuscelia pulla (898Bq kg(-1) and 1207Bq kg(-1), respectively). The mean activities in the lichen species ranged from 164 to 584Bq kg(-1) for Po-210 and from 175 to 671Bq kg(-1) for Pb-210. The activity ratios for Po-210/Pb-210 ranged from 0.75 to 1.57.Scientific Research Project of Manisa Celal Bayar University [2012/118]This work was supported by Scientific Research Project of Manisa Celal Bayar University. Project No: 2012/118

Determination of Po-210 and Pb-210 depositions in lichen and soil samples collected from Koprubasi-Manisa, Turkey

Cam Kaynar, Sermin/0000-0002-3022-4908WOS: 000433263900010In this study, we aimed to determine the accumulations of Po-210 and Pb-210 in soil and lichen samples in Koprubasi. The Koprubasi district is home to the largest uranium deposits in Turkey. To date, there has been no study recorded in the literature related to Po-210 and Pb-210 depositions in lichens in Koprubasi. Six different lichen species (Cladonia convoluta, Parmelina tiliacea, Physcia stellaris, Pleurosticta acetabulum, Xanthoparmelia conspersa, and Xanthoria parietina) as well as soil samples were collected from seven sampling locations around Koprubasi. Lichens were used as biomonitors for Po-210 and Pb-210 deposition. The Po-210 and Pb-210 activity concentrations were measured in all the samples by alpha spectrometry. The activity concentrations in the lichen samples ranged from 64 to 577 Bq kg(-1) with an average of 266 Bq kg(-1) for Po-210 and from 78 to 565 Bq kg(-1) with an average of 333 Bq kg(-1) for 210 Pb. The activity ratios of Po-210/Pb-210 ranged from 0.80 to 1.99. In the lichen species, the mean 210 Po activity values varied from 154 Bq kg(-1) in Pleurosticta acetabulum to 390 Bq kg(-1) in Xanthoparmelia conspersa. The range of the mean Pb-210 activity was between 153 Bq kg(-1) in Cladonia convoluta and 378 Bq kg(-1) in Parmelina tiliacea. In the soil samples, Po-210 and Pb-210 activity concentrations were ranged from 14 to 1268 Bq kg(-1) and from 19 to 1113 Bq kg(-1), respectively. While the values of Po-210 and Pb-210 measured in the lichen samples are comparable with those of the literature, the results of Po-210 and Pb-210 in the soil taken from the uranium mine are higher than the results of the literature studies.Manisa Celal Bayar University, Scientific Research Projects Coordination [2012/118]This work was supported by Manisa Celal Bayar University, Scientific Research Projects Coordination Unit (No. 2012/118)

Determination of radioactivity levels in Akhisar, Gordes, Golmarmara and Sindirgi regions, Western Turkey

WOS: 000330780800008In this study, radioactivity measurements in the environment of Akhisar, Golmarmara, Gordes and Sindirgi regions in Western Turkey were investigated in order to evaluate the implications of any excess radioactivity in the environment of geological formation. The radioactivity concentrations of K-40, U-238 and Th-232 radionuclides in the soil samples were measured by a NaI(Tl) gamma spectrometer system, and the radium activity concentrations in the water samples were also analyzed by an ZnS(Ag) alpha counter by the collector chamber method. The radioactivity of K-40, U-238 and Th-232 in soils ranged 2.80-2,347.77, 9.90-256.19 and 9.66-106.53 Bq kg(-1), respectively. The activity of Ra-226 in the water samples ranged from 0.03 Bq L-1 (0.89pCi/L) to 0.80 Bq L-1 (21.58pCi/L). In addition, the external terrestrial gamma dose rate in air (nGy h(-1)), annual effective dose rate (mSv year(-1)) and radium equivalent activity (Bq kg(-1)) were calculated and compared with international standard values.Celal Bayar University Scientific Research Projects Coordination (BAP)Celal Bayar University [2010/10]In this study, Celal Bayar University Scientific Research Projects Coordination (BAP) No. 2010/10 with the Project is supported