Single spike equation using isotope abundances

Single spike equation using isotope abundances 

Single spiking method is essentially a problem of two-component mixing. The ratio of the abundances of two isotopes A and B of an element in the mixture is (Faure, 1986) 

Note that for naturally occurring non-radiogenic isotopes, for example, Sr and Sr, their natural abundances and Ab are known in the 

Substitution of (11.3) and (11.4) into (11.2) gives the concentration of the element in the natural sample 

In the above equation, the isotopic composition in the mixture R is measured by amass spectrometer, the weight of the normal sample (Mf ) and the weight of the spike (A/ ) can be measured by a analytical weighing balance, and all other parameters Cspike,. Ab, Ab,  

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Single spike equation using isotope abundances... 

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