Combined secondary electrospray and corona discharge ionization (SECDI) for improved detection of explosive vapors using drift tube ion mobility spectrometry

Keywords:

ion mobility spectrometry, drift tube ion mobility spectrometry, Secondary electrospray corona discharge ionization, electrospray ionization, corona discharge, detection of explosive vapors

Secondary electrospray corona discharge ionization

Secondary electrospray corona discharge ionization (SECDI) Secondary electrospray corona discharge ionization (SECDI) combines the principles of secondary electrospray ionization (SESI) and corona discharge (CD) to achieve higher sensitivity. This is demonstrated in this paper, through the detection of 2,4,6-trinitrotoluene (TNT) and 2,6-dinitrotoluene (2,6-DNT) vapors using high performance ion mobility spectrometry (HPIMS). SECDI achieves higher sensitivity without the aid of dopant molecules.
 

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