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ARCHAEOLOGICAL CHEMISTRY

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Answer the following questions, showing calculations and equations where appropriate:

1. Your analytical technique directly and accurately measures the concentration of iron-54 in your samples. How would you calculate the total iron concentration from these concentrations? What if you wanted to know the iron-oxide concentration (How would you do that calculation)? Show the calculations for an iron-54 concentration of 0.1%.

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If I understood the question correctly, it asks about how one can calculate the total concentration of Iron if the analytical method used gives directly the concentratoin of Iron-54. WHat one would do in this case is obtain the abundance of iron-54 which happens to be 5.82% (reference is MERK INDEX). by obtaining the concentration vallues from the analytical method and calling it X, then Y which is the total conncentration of iron would be: (Y=X*100/5.8).
On the other hand to obtain the concentration of ...

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Archaeological Chemistry

Answer the following questions, showing calculations and equations where appropriate:
1. Steponaitis, Blackman, and Neff (American Antiquity 61:555-572, 1996) use the following correction for bulk elemental concentrations measured in shell- tempered pottery: e' = (1000000*e)/(1000000-2.5Ca), where e' = corrected elemental concentration, e = originally measured elemental concentration, Ca = concentration of calcium, and all measurements are in parts per million (ppm). Explain how this correction works. Hint: Assume that the shell temper is pure calcium carbonate, CaCO3.

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