Provisionals Publications Symposia AMP Links of Interest Search the Site Home Page Pure Appl. Chem. , Vol. An annotation for potassium has been changed in the Table of Standard Atomic Weights.
Many elements have a different isotopic composition in some non terrestrial materials.
Some recent data on of oxygen are included in this report for the information of the interested scientific community. Page last modified 7 October 1999. Questions regarding the website, please contact Web Help.