In this study we present a luminescence investigation of samples from the Požarevac loess–palaeosol sequence (LPS) in north–eastern Serbia. The pIRIR₂₉₀ signal displayed a generally good behaviour and yielded stratigraphically consistent D_e values. The pIRIR₂₉₀ ages show very good agreement (within uncertainty) with the expected stratigraphic ages up to about 260 ka. The analyses of the 4–11 μm quartz extracts were performed in order to determine their applicability for luminescence dating. The optically stimulated luminescence (OSL) measurements showed that the fine–grained quartz systematically underestimates the expected equivalent doses for all measured samples. A comparison between natural and laboratory dose response curve showed no overlapping, not even in the lower dose range. Linear modulated –OSL analysis revealed large differences between individual samples where some quartz extracts displayed a different number of components and varying contribution of the fast component. The quartz OSL also shows thermal instability as demonstrated by pulse annealing experiments and thermal fading. For these reasons we do not consider the fine–grained quartz from the Požarevac LPS as a reliable dosimeter.

在这项研究中，我们对来自塞尔维亚东北部 Požarevac 黄土-古土壤序列 (LPS) 的样本进行了发光研究。所述pIRIR ₂₉₀信号显示的总体良好的行为和产生地层一致d _ë值。pIRIR ₂₉₀年龄显示出非常好的一致性（在不确定性范围内）与高达约 260 ka 的预期地层年龄。对 4-11 μm 石英提取物进行了分析，以确定它们对发光测年的适用性。光学受激发光 (OSL) 测量表明，细晶石英系统地低估了所有测量样品的预期等效剂量。自然和实验室剂量反应曲线之间的比较显示没有重叠，即使在较低的剂量范围内也不重叠。线性调制 –OSL 分析揭示了单个样品之间的巨大差异，其中一些石英提取物显示出不同数量的成分和不同的快速成分贡献。石英 OSL 还显示出热不稳定性，如脉冲退火实验和热衰落所证明的那样。