describe the processes involved in electron impact and electrospray io
Describe the processes involved in electron impact and electrospray ionisation for analysis by mass spectrometry. What sample types would these two techniques be used for? In an experiment using a time-of-flight (tof) mass spectrometer, the following experimental parameters are used: Accelerating voltage (V) = 14000 V; path length (L) = 1.2 m. A protein molecule has a relative molecular mass of4710 g mol1 and is ionised by adsorption of ammonium ions (M, = 18). What would be the predicted detection time if: i)one (1) ammonium ion and ii)twelve (12) ammonium ions have been adsorbed to form an ion? NA = 6.022 x 1023 mol1%3D e3D 1.602 х 1019 C
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