What kind of molecule, with a weak but existing IR signal at cm-1, could deciduous trees emit only in very calcareous soils? American Chemical Society. After all, there is a Nobel prize awarded for the technique to Libby in Low-level submicromole environmental 14 C metrology. Multiple papers have been published both supporting and opposing the criticism.
The carbon isotope would vanish from Earth's atmosphere in less than a million years were it not for the constant influx of cosmic rays interacting with atmospheric nitrogen. Can environmental stress conditions alter isotopic fractionation in radiocarbon dated samples? Now if we want to compare 2 regular statistical distributions hypothesis test the usage of 1 sigma as dispersion index may be restrictive i.