Rehydroxylation (RHX) dating of archaeological pottery
Rehydroxylation (RHX) dating of archaeological pottery
复制标题
DOI：
10.1098/rspa.2012.0109
复制
发表时间：
2012-11-08
影响因子：
3.5
通讯作者：
Hall, Christopher
中科院分区：
文献类型：
--
作者：
Wilson, Moira A.;Hamilton, Andrea;Hall, Christopher
我们表明，再羟基化（RHX）的方法可以用来确定考古陶器，并给出了第一个RHX日期为三个不同的项目出土材料。这些都与独立指定的日期一致。我们精确地定义了陶瓷材料在脱羟基之前、期间和之后的质量组分。这些包括样品中存在的三种类型的水的质量：毛细水，弱化学吸附分子水和化学结合的RHX水。我们描述了RHX定年过程的主要步骤：样品制备、干燥、调节、再加热和RHX质量增加的测量。我们提出了一个统计标准隔离RHX分量的测量质量增益数据后再加热，并演示了如何计算RHX年龄。有效寿命温度（ELT）的定义，我们展示了这是如何与样品的温度历史。ELT用于将在测量温度下获得的RHX速率常数调整为RHX年龄计算中使用的有效寿命值。我们的研究结果表明，RHX有可能成为一个可靠的和技术上简单的方法来确定考古陶器的年代，从而填补了一个长期存在的差距，在定年方法。
We show that the rehydroxylation (RHX) method can be used to date archaeological pottery, and give the first RHX dates for three disparate items of excavated material. These are in agreement with independently assigned dates. We define precisely the mass components of the ceramic material before, during and after dehydroxylation. These include the masses of three types of water present in the sample: capillary water, weakly chemisorbed molecular water and chemically combined RHX water. We describe the main steps of the RHX dating process: sample preparation, drying, conditioning, reheating and measurement of RHX mass gain. We propose a statistical criterion for isolating the RHX component of the measured mass gain data after reheating and demonstrate how to calculate the RHX age. An effective lifetime temperature (ELT) is defined, and we show how this is related to the temperature history of a sample. The ELT is used to adjust the RHX rate constant obtained at the measurement temperature to the effective lifetime value used in the RHX age calculation. Our results suggest that RHX has the potential to be a reliable and technically straightforward method of dating archaeological pottery, thus filling a long-standing gap in dating methods.