What is the chemical behaviour of Hafnium in carbonate-rich conditions and where does it go ?

I'm trying to measure Hf isotopes in CaCO3 rich (up to 98 %) sediment (and maybe uncleaned foram tests). To get reliable data on our machine I need ~20ng of Hf. However, it is really hard to leach...

16 December 2014 2,135 4 View