PBD standard

MEK104 at psuvm.psu.edu MEK104 at psuvm.psu.edu
Thu Oct 22 08:35:32 EST 1992

In reviewing some of the literature on carbon isotope discrimination in
plants, I've come across the phrase "PeeDee belemnite standard" with which
plant carbon isotope composition is compared.  Can anyone explain what this
standard is, its history or what the significance is (or a reference).

Thanks, Mark Kubiske

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