In {TAIL ~ the corona discharge single electrode} {HEAD ~ electrochemical/electrospray ionization technique electrons} are removed from the metal tip of the device through gases present in the electrospray ion source resulting in electrochemical ionization of the sample of interest 
In { TAIL ~ the corona discharge single electrode } { HEAD ~ electrochemical / electrospray ionization technique electrons } are removed from the metal tip of the device through gases present in the electrospray ion source resulting in electrochemical ionization of the sample of interest
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