Lucy Carpenter
speaker
271 appearances
1 recordings
1 series
first heard May 2026
last heard 11 May
Lucy Carpenter’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 1 in all, peaking in May 2026 with 1.
Appearances
The physical side, physical chemistry, the mathematical side.
The major halogens are fluorine, chlorine, bromine and iodine.
And they exist in a whole variety of forms.
So inorganic forms.
So, for example, we all probably heard of hydrochloric acid, HCl, through to inorganic halogens, which are volatile and exist in the gas phase.
to organic halogens, also volatile, also exist in the gas phase.
Yes, so they can exist in a variety of forms, solid, liquid, gas, and a huge variety of reactivities as well.
Yes.
So there was an idea that there could be some halogen chemistry in the troposphere.
We knew that it would involve, if it was happening, more reactive halogens, iodine and bromine, but really very little was known.
So I built a system to trap the halogens and we coupled it to a
gas chromatic mass spectrometer, so a well-established way of measuring molecules, and put it on this station at Mayshead.
It was part of a big experiment.
In fact, I think it was one of the UK's first big consortium field experiments.
So it was a great experience.
And lo and behold, we found a much richer mixture of halogens that had been seen before.
And at that site, you look out to Mayshead and you can see seaweed everywhere.
And we saw these strange signatures in halogens, which turned out to be due to the tidal cycle.
And not only that, because it was a consortium project and lots of different labs were doing lots of different things.
The aerosol people, when it was low tide and daylight, they saw what we used to call bursticles, which were huge bursts of new particles, tiny nanometre size aerosol particles.
Showing 61–80 of 271 · page 4 of 14
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