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IMPROVEMENTS TO THE PRETREATMENT OF BONE AT OXFORD

机译:牛津骨预处理的改进

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摘要

Bone is one of the most widely used materials for dating archaeological activity. It is also relatively difficult to pretreat effectively and new methods are an area of active research. The purpose of the chemical pretreatment of bone is to remove contaminants present from burial and to do so in a way which does not add any additional laboratory contaminant. To some extent, these two aims must be balanced since, on the whole, the more complex the procedure and the more steps included, the greater the chance for contamination. At the Oxford Radiocarbon Accelerator Unit (ORAU), the method used is a continuous-flow or manual acid/base/acid (ABA) treatment followed by gelatinization and ultrafiltration (based on Brown et al. [1988]; documented in Bronk Ramsey et al. [2000]). We find this overall method is very effective at removing more recent contamination in old bones. However, two aspects of the method have recently been improved and are reported here: the redesign of ORAU's continuous flow pretreatment and a new protocol in our pretreatment ultrafiltration stage.
机译:骨是用于约会考古活动的最广泛使用的材料之一。有效预处理也相对困难,并且新方法是积极研究的领域。骨化学预处理的目的是去除坟墓中存在的污染物,并以不增加任何其他实验室污染物的方式进行。在一定程度上,这两个目标必须保持平衡,因为总体上来说,程序越复杂且所包含的步骤越多,受污染的机会就越大。在牛津放射性碳加速器装置(ORAU),使用的方法是连续流或手动酸/碱/酸(ABA)处理,然后进行糊化和超滤(基于Brown等人(1988年);在Bronk Ramsey等人中有文献记载。等[2000])。我们发现这种整体方法非常有效地去除了旧骨头中的新近污染。但是,该方法的两个方面最近得到了改进,并在此处进行了报道:ORAU连续流预处理的重新设计和预处理超滤阶段的新方案。

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