Who out there is out there doing 16O-18O ratios on nitrate? if so what's the
latest technique and easiest ?

Someone asked me for this information, as we don't do it here yet  I would
be interested to find out how and what are the pitfalls.
Samples they are thinking of are soil-water samples, at natural abundance
levels. It has some interesting potential....

I would be most grateful for all suggestions, comments, references etc...

Thanks in advance for any assistance........
Long live isogeochem....

Rebecca Hood