Radioactivity concentrations and risk assessment of Tekirdağ lignites (case study of Malkara coalfield)

Acta Geophysica

article

Güllüdağ, C. Bertan¹  Aksoy, Ercüment²  Ünal, Neslihan³  Özmen, Süleyman Fatih¹ 

[1] Department of Construction Technology, Vocational School of Technical Sciences, Akdeniz University;Department of Geographical Information System, Vocational School of Technical Sciences, Akdeniz University;Department of Land Registry and Cadastre, Golhisar School of Applied Sciences, Burdur Mehmet Akif Ersoy University

关键词: Lignite;    Coal;    Natural radioactivity;    HPGe;    Radiological hazards;    Malkara/Tekirdağ;    Thrace region;   

DOI  :  10.1007/s11600-020-00468-3

学科分类：地球科学(综合)

来源: Polska Akademia Nauk * Instytut Geofizyki

【 摘 要 】

Malkara coals are located in the Oligocene-aged Danişmen Formation in the Thrace Tertiary coal basin. The Danişmen Formation consists of limestone, sandstone, tuffite, siltstone, claystone and intercalated coal. Elemental and specific natural radionuclide concentrations of lignites collected from Tekirdağ–Malkara coalfield were determined, and the associated radiological risk was assessed. In order to examine the depth-dependent radionuclide concentration changes, samples were taken from top, middle and bottom parts of the boreholes. Gamma spectrometric measurements of radionuclide activities were performed with HPGe detector. The calculated mean 226Ra, 232Th and 40K concentrations were 27.0 ± 3.57, 18.9 ± 3.28 and 155 ± 36.1 Bq kg−1, and the measured U, Th, Pb and K concentrations were 4.04, 6.27, 10.6 ppm and 0.82%, respectively. Findings were comparable with the reported literature for Turkey and other countries from the world. The dose due to the radionuclide content of lignites was not very high to pose a serious health risk.

【 授权许可】

Unknown