Continuing on with #RealTimeChem week (@RealTimeChem on Twitter), here’s something that not too many ‘traditional’ chemists have to do, but geochemists have to do all the time. It’s not very often when you can just stick a rock into an instrument and take a geochemical measurement. Usually, the rock (or fossil, in this case) has to be powdered first.
For my own research, I’m usually interested in isotopes of carbon and of oxygen, which provide information about plant life (diets of animals, habitats) and climate (temperature, humidity, precipitation), respectively.
As in my last #RealTimeChem post, I’ll mostly be using tweets to illustrate what I was doing. These will have to go through the same chemical pretreatment as in my last post, but then will undergo a second chemical preparation (which I won’t be doing this week) to isolate oxygen from phosphate in the bone and scale mineral.
A 90 million year old fish scale. Going to get it out of the rock and powder it for isotopic analysis. #realtimechem twitter.com/paleololigo/st…
— Penny Higgins (@paleololigo) April 19, 2013
Fish scale about to meet its doom. #realtimechem twitter.com/paleololigo/st… — Penny Higgins (@paleololigo) April 19, 2013
Grinding it up! This was an unidentifiable piece of fossil bone about 90 million years old #realtimechem twitter.com/paleololigo/st… — Penny Higgins (@paleololigo) April 19, 2013
Powder on weighing paper. Not very high-tech. #realtimechem twitter.com/paleololigo/st…
— Penny Higgins (@paleololigo) April 19, 2013
I so dislike cleaning the mortar and pestle. But I must between each sample lest I cross-contaminate. #realtimechem twitter.com/paleololigo/st…
— Penny Higgins (@paleololigo) April 19, 2013
Only have a few more to grind. Ugh! Glad to have a good sample size, though! #realtimechem twitter.com/paleololigo/st…
— Penny Higgins (@paleololigo) April 19, 2013
Got smart and realized that I actually have employees that can grind and pretreat these samples for me. Why am I doing this? #RealTimeChem
— Penny Higgins (@paleololigo) April 19, 2013
Sometimes, I’m a little slow on the uptake. I start thinking that if I’m involved in a research project, I can’t have my student employees work on it.
Yeah, I fixed that.