Below is a copy of a message I sent to Peter Deines on the matter of journal policy (in this case GCA) regarding the adoption of the V-XXXX notation and all it implies. I didn^t go into too much detail in this message because Peter and I had already communicated about the problems entailed. At least you will see that there are some serious deliberations in progress to deal with the matter. MANY scientists are opposed to this recommendation and will not go along with it. Hi Peter, Thanks for your message concerning the standards policy you would like to endorse for your journal. Even though your draft is in the right direction (not requiring that the V-s be appended), it is not strong enough in my opinion. I think that the IUPAC was ill advised by a group of scientists who did not understand the ramifications of their actions. More importantly, the views of the members of this group do not represent those of the established workers in the field. From my feedback that I shared with you, these scientists will not accept this recommendation. We do not need an embarrassing revolution over such a matter, but I believe that a mistake was made and that the IUPAC should rescind their recommendation. There are some open discussions going on now among the isogeochem network group, a group seemingly dominated by enthusiastic, mostly new workers interested in analyzing carbonates, waters, and organic matter for purposes of palaeoceanography, palaeoclimatolgy, etc. There are many other discussions of this matter going on among private groups. I hear about it everywhere I go. It is obvious from what is said and written that many do not understand what is going on. Most new workers were ready to put a V- in front of the acronyms for the standards (EVEN PDB!!) because they thought it a mandate from on high. To others, putting a V- in front of these acronyms meant that they had properly normalized their data to the values accepted for the international standards. There is almost no appreciation of the inherent errors of sample preparation, extraction chemistry and the like. Two or three messages that appeared on the network dealt with the NECESSITY in "modern research in isotope geochemistry" to distinguish natural substances that differ in d18O or d13C by only 0.02 permil! Appending the V- was somehow related to being able to do this kind of work. I could hardly believe what I was reading. Of course attainment of this kind of accuracy is poppycock engendered in part by the companies that manufacture mass spectrometers. One needs only to look at the notebooks in any properly functioning stable isotope laboratory to have an appreciation of the errors encountered in stable isotope geochemistry. Among editors and associate editors, I have discussed V- with you, Rob Van der Voo, Bruce Taylor and Lynn Walter. Bob Clayton wrote a thoughtful letter on the matter to Gunther and I presume you have read his letter. I hope that the journal editors are communicating with each other on this issue so as to assure a uniform policy for reporting stable isotope data. It was I who blew the whistle on this unfortunate recommendation last May, but I am too busy with other pressing matters to do something more effective at the present time. I would be willing to spearhead the drafting of an appropriate document to the IUPAC but not until autumn when I am back at the University of Michigan. Thanks for your interest. Regards, Jim James R. O'Neil Institute de Mineralogie et Petrographie BFSH2 Universite de Lausanne 1015 Lausanne Switzerland Tel: 41/21/692 43 65 Fax: 41/21/692 43 05