Rehydroxylation dating sample


11-Jan-2016 17:46

Before the advent of carbon 14 dating, estimate of age is a rather hazardous undertaking.

The age of a piece of antique can be determined by its style in certain period, the age of fossil is related to the stratification etc.

The use of microgravimetric instruments using the Aquadyne DVS Gravimetric Water Sorption Analyzer (Quantachrome Instruments) for RHX dating was pioneered by research at the University of Manchester. Aquadyne DVS Gravimetric Water Sorption Analyzer The RHX dating methodology is quite straightforward, however producing data of enough quality to offer an age estimate for a fired ceramic piece is more difficult as a super-slow rate mass gain due to RHX needs to be measured which is an increase of 6 mg over 3 days.

One must be able to measure very small mass changes under constant environmental conditions of relative humidity and temperature a task that can be easily done by the Aquadyne Dynamic Water Sorption Analyzer as shown in Figure 2. This graph shows raw experimental data for m to demonstrate the level of precision that it is necessary for RHX dating.

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The rehydroxylation process is a chemical reaction and is based on temperature.It has been shown that estimation of an “effective lifetime temperature” (ELT) for the location where the sample was obtained, provides a reliable temperature under which to perform the analysis to approximate the conditions seen by the sample during its lifetime.



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