Cam N Füsun, Yaprak Günseli, Eren Elif
Physics Department, Faculty of Sciences, Ege University, 35100 Bornova, Izmir, Turkey.
Radiat Prot Dosimetry. 2010 Dec;142(2-4):300-7. doi: 10.1093/rpd/ncq210. Epub 2010 Aug 27.
Lignite burning is one of the sources of technologically enhanced exposure to humans from natural radionuclides. In the preliminary study, part of the survey, the activity concentrations of (226)Ra, (232)Th and (40)K in 112 samples of feed lignites from seven lignite-fired power plants in Western Anatolia (Seyitömer, Tunçbilek, Orhaneli, Soma, Yatağan, Yeniköy and Kemerköy) were, therefore, determined by scintillation gamma spectrometry. The ranges of the relevant radionuclides in the lignite samples are as follows: (226)Ra, 23-291 Bq kg(-1); (232)Th, 12-68 Bq kg(-1); and (40)K, 67-284 Bq kg(-1). Taking the coefficient of variation (CV) as a measure of the variability, the CV is also calculated for the natural radionuclides in the feed lignites. Furthermore, the dose rates in the coal-handling areas due to external gamma radiation are found to be within the range specified by UNSCEAR (2000) report.
褐煤燃烧是人类因天然放射性核素而在技术上增加接触的来源之一。因此，在初步研究（调查的一部分）中，通过闪烁γ能谱法测定了安纳托利亚西部七个褐煤发电厂（塞伊托默尔、通奇比莱克、奥尔哈内利、索马、亚塔甘、耶尼科伊和凯梅尔科伊）的112个褐煤原料样品中（226）镭、（232）钍和（40）钾的活度浓度。褐煤样品中相关放射性核素的范围如下：（226）镭，23 - 291贝克勒尔/千克；（232）钍，12 - 68贝克勒尔/千克；以及（40）钾，67 - 284贝克勒尔/千克。以变异系数（CV）作为变异性的度量，还计算了褐煤原料中天然放射性核素的CV。此外，发现煤炭处理区域因外部γ辐射产生的剂量率在联合国原子辐射效应科学委员会（2000年）报告规定的范围内。
