Construction of a quartz OSL standardised growth curve (SGC) for aeolian samples from the Horqin dunefield in northeastern China
Construction of a quartz OSL standardised growth curve (SGC) for aeolian samples from the Horqin dunefield in northeastern China
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DOI：
10.2478/s13386-011-0045-2
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发表时间：
2011-12
期刊：
影响因子：
1.2
通讯作者：
Linhai Yang;Zhongping Lai;H. Long;Jingran Zhang
中科院分区：
文献类型：
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作者：
Linhai Yang;Zhongping Lai;H. Long;Jingran Zhang
标准化生长曲线法（SGC）可准确测定De，缩短测定时间。然而，关于SGC方法的适用性存在不同意见。本文报道了科尔沁沙丘区35个风成样品的石英光释光SGC的建立，并对它们在De测定中的适用性进行了检验。我们的研究结果表明：1）在80戈伊剂量下，科尔沁沙丘的SGC可用指数加线性方程拟合，r ~ 2 = 0.97，所有的再生剂量点都很好地贴在拟合线上，说明所有样品的剂量-反应曲线非常相似; 2）Des在1 ~ 50戈伊范围内的样品，SAR De与SGC De的比值在0.9-1.1之间，平均比值为1.01±0.01，接近1。因此，SGC的构建是正确的，SGC是对研究区样品进行准确De测定的有效方法。
It has been suggested that the standardised growth curve (SGC) method can be used to de-terminate De accurately and reduce the measurement time. However, different opinions regarding the applicability of the SGC method exist. In this paper, we report the construction of quartz OSL SGC for 35 aeolian samples from different parts of the Horqin dunefield in northeastern China, and then test their applicability for De determination. Our results suggest that: 1) up to a regeneration dose of 80 Gy, the SGC of the Horqin dunefield can be fitted using the exponential plus linear equation, with the r2 value of 0.97, and all the regeneration dose points closely stick to the fitting line, implying that all samples share a very similar dose-response curve; 2) for samples with Des ranging from 1 to 50 Gy, the ratios of SAR De to SGC De fall within the range of 0.9–1.1, and the average ratio of SAR De to SGC De is 1.01±0.01, close to unity. Therefore, the construction of SGC is correct, and the SGC is an effective procedure for accurate De determination for samples from the study area.