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The streams of sorted ions pass from the analyzer to the detector, which records the relative abundance of each ion type.

This information is used to determine the chemical element composition of the original sample (i.e.

(Other analyzer types are treated below.) Consider a sample of sodium chloride (table salt).

In the ion source, the sample is vaporized (turned into gas) and ionized (transformed into electrically charged particles) into sodium (Na) ions.

Goldstein called these positively charged anode rays "Kanalstrahlen"; the standard translation of this term into English is "canal rays".

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In a typical MS procedure, a sample, which may be solid, liquid, or gas, is ionized, for example by bombarding it with electrons.The analyzer part of the spectrometer contains electric and magnetic fields, which exert forces on ions traveling through these fields.The speed of a charged particle may be increased or decreased while passing through the electric field, and its direction may be altered by the magnetic field.Mass spectrometry is used in many different fields and is applied to pure samples as well as complex mixtures.A mass spectrum is a plot of the ion signal as a function of the mass-to-charge ratio.

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