25 Jul '16, 4pm

New Tech to Find Cheaters at the 2016 Olympics

New Tech to Find Cheaters at the 2016 Olympics

Sometimes differentiating among even these tiny fragments can be tricky. Two pieces may have different atomic structures but similar mass. For that, the Rio lab turns to instruments with even higher resolution. One of those is the orbitrap—a barrel-shaped mass analyzer that forces charged fragments to cycle around an inner spindle. The fragments’ mass-to-charge ratios can be determined by tracking their elliptical trajectory. Another high-res tool in the lab’s arsenal is a time-of-flight mass spectrometer. It determines a particle’s mass-to-charge ratio by measuring the time it takes for the particle to travel a known distance. Both the orbitrap and the time-of-flight instrument determine the masses of particles with more precision than tandem systems alone.

Full article: http://spectrum.ieee.org/biomedical/diagnostics/new-tech-...

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