I stopped by to talk to the geochemists today. With little idea of what went wrong, I am quick-processing 5 samples to make sure my column procedure is correct. The enamel is drying in water right now. On Wednesday, I'll do columns and dry down the samples to get them onto the mass spec that night or in the morning. Hopefully, something along the way will jump out at the geochemist and I can find out what I'm doing wrong or what's going wrong. So yay, I get to spend most of my waking hours in the geochem lab this week.