Robin, 198Hg is used as the frame of reference - isotopic measurements in this paper are ratios w.r.t. 198Hg.
-- Lou Pagnucco mixent wrote: > In reply to Jones Beene's message of Thu, 28 Feb 2013 10:25:35 -0800: > Hi, > [snip] >>There is a graph (in the abstract) which seems to indicate that one >> isotope >>is the main source of the anomaly, and two others participate. >> >>http://pubs.acs.org/doi/abs/10.1021/es303940p?source=cen > > What happened to 198Hg? > Regards, > > Robin van Spaandonk > > http://rvanspaa.freehostia.com/project.html > > >

