Ege University, Institute of Nuclear Sciences, 35100 Bornova, Izmir, Turkey.
J Environ Radioact. 2012 May;107:1-12. doi: 10.1016/j.jenvrad.2011.11.002. Epub 2011 Dec 17.
The sediment chronology was determined using Lead-210 (²¹⁰Pb) dating method in Gülbahçe Bay. Sediment cores were obtained using gravity core sampler from hydrothermal area and also from reference point and surfical distribution of Polonium-210 (²¹⁰Pb) was investigated in the study area. The average of surfical concentration of ²¹⁰Po was found as 175.25 ± 3.80 Bq kg⁻¹ in the hydrothermal area which was higher than the reference point value of 133.20 ± 3.30 Bq kg⁻¹. Sedimentation rates in Core reference point (RN) displayed an increase till the year 1942 and a decrease afterwards, sedimentation rates in any core from hydrothermal area have not exhibited any continuous increase or decrease. The ²¹⁰Pb fluxes measured from core inventories are close to each other. Average enrichment factors for Cu, Cd, Sr, Zn, Cr vary between 20.35 and 12.18 indicating that the sediments have been contaminated with these metals in the reference point. Maximum enrichment factor values for Cr, Cu, Zn, Ba, Sr, Ni, Co vary between 22.91 and 11.42, implying that the sediments in hydrothermal area have been contaminated with these metals.
在古尔巴哈切湾使用铅-210（²¹⁰Pb）测年法确定了沉积年代。使用重力取芯器从热液区和参考点获取了岩芯，并研究了该地区的钋-210（²¹⁰Pb）的表面分布。在热液区，²¹⁰Po 的表面浓度平均值为 175.25 ± 3.80 Bq kg⁻¹，高于参考点 133.20 ± 3.30 Bq kg⁻¹ 的值。参考点（RN）岩芯中的沉积速率显示出先增加后减少的趋势，而热液区任何岩芯中的沉积速率均未表现出连续增加或减少的趋势。从岩芯库存中测量的²¹⁰Pb 通量彼此接近。Cu、Cd、Sr、Zn、Cr 的平均富集因子在 20.35 到 12.18 之间变化，表明参考点的沉积物已被这些金属污染。Cr、Cu、Zn、Ba、Sr、Ni、Co 的最大富集因子值在 22.91 到 11.42 之间变化，表明热液区的沉积物已被这些金属污染。
