Question

CHCA, HPA, and ATT crystals are common supports for instances of this technique whose analytes are highly susceptible to damage. Analytes are heated in a vacuum in a version of this technique that relies on blackbody infrared radiative dissociation. Performing this technique on aromatic analytes can result in the formation of an unstable tropylium (10[3])(“tro-PILL-ee-um”) ion. (10[1])Samples for this technique can be prepared via desorption from a matrix made of an aromatic acid such as sinapinic acid. Analytes undergo soft ionization by either electrospray ionization or MALDI (“MALL-dee”) in the first step of this technique. (10[1])The kinetic energy of analytes in this technique is measured in its “time of flight” variant. For 10 points, name this technique that measures an analyte’s mass-to-charge ratio. ■END■

ANSWER: mass spectrometry [or MS; accept tandem mass spectrometry; accept time of flight mass spectrometry; prompt on ionization, soft ionization, MALDI, or electrospray ionization until read by asking “what larger technique is that a part of?”]
<Chemistry>
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PlayerTeamOpponentBuzz PositionValue
Derek Chen (UG)Columbia CJohns Hopkins5310
Geoffrey Wu (UG)Columbia ARowan5310
Andrew HannaPennNYU B5310
Arjun Bothra (UG)HaverfordNYU A5410
Sam Macchi (DII)VassarJohn Jay9210