This story out of MIT is really, really crazy. Some background on this is dimethylmercury is one of the most dangerous chemicals to ever be used in the field of chem full stop.
A famously tragic tale happened at Dartmouth in the 90s when someone spilled a few drops on their gloves under a fume hood and died not even a year later with blood mercury levels thousands of times above normal. All lab PPE training/safety courses talk about this case. The Dartmouth case changed lab safety practices all over the world, and this chemical isnāt really allowed anymore as normal PPE doesnāt work and you need special silver shield gloves.
People used to use to use it for something called NMR (nuclear magnetic resonance) which means using a big magnet to ālistenā to atoms in a molecule to chemists can learn what they look like. Mercury has a special isotope that can be heard this way, but to report results so everyone can interpret them, scientists need a zero on the scale, and that zero is called the chemical shift reference. Dimethylmercury is pure liquid packed with mercury atoms so putting a tiny amount on the NMR machine made 2 things happen: finding the Mercury signal (machine has a huge frequency range that can be searched) and calibrating the exact radio wave pulse. You see the fruits of MNR all the time IRL. MRI is basically just MNR applied to the human body (looks at hydrogen atoms in water in your tissues), drug companies use it to confirm the structure of new meds, itās how people check if olive oil is fake. RIP to this student, awful.
It seems like there was a dimethal mercury incident on the MIT campus with one student directly exposed.
A terrible tragedy and a terrible way to go.