Calibration of mass spectrometer for protein anal.

Calibration of mass spectrometer for protein anal.

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Caption: VG BIO-Q mass spectrometer used for protein analysis at Oxford University. The spectrometer's computer displays its "Tune Editor", used to check sensitivity & resolution prior to analysis proper. Mass spectrometers are used to identify chemical compounds by exploiting the behaviour of their molecular ions in magnetic & electric fields. Samples in liquid form are injected into the machine at far left. Inside, the substance is ionised by bombardment from high-energy electrons. Variable electric and magnetic fields are used to accelerate & deflect the ions towards a detector.

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Keywords: apparatus, by mass spec, calibration, chemical, chemistry, equipment, industry, mass, mass spectrometer, protein analysis, proteomics, spectrometer, technology

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