Week 4 - Tuesday

Great news...at about 5:15 pm the oven arrived. If we ever need to bake anything out at 3000 C we are set. See picture below. I was told they will install it on Wednesday. The size is a little deceptive, it has a lot of insulation.


We are still trying to get a hold of a pesticide grade hexanes distributor. I'm not sure we can get high quality hexanes before my time is up here.

We made the stock solution for the 14 analytes with the ethyl acetate we found yesterday. I ran several injections of the ethyl acetate on the GC to make sure it was clean....it was. We decided to make some practice samples. We will use the reagent grade hexanes and see what happens. The samples are LFT that were spiked with both our PRC mix and our mix of 14 analytes. While running the ethyl acetate I noticed one peak that shows up in both detectors very consistently. It is definitely higher in the first run of the day if the GC remains idle overnight.

Wednesday we will do a dialysis of the practice samples then leave for St. Louis. We will retrieve on Thursday then head back to Dakar in the afternoon.