ABSTRACT. Recent experimental work has suggested that the relative fractionation of 14C to 13C may differ from the accepted value of b = 2. In order to explore the implications of this possibility, the standard formulae for correcting radiocarbon dates for fractionation effects are rederived, but without making any of the usual assumptions or approximations. A generalized dating equation OxT -true value of oxalic acid standard, prior to preparation atmT -true value of atmospheric CO2

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