The invention relates to a novel electro-spray sampling
vacuum ultraviolet single-
photon ionization mass spectrometry analysis device which solves the analysis problems of a plurality of non-polarity composition complex systems. The device of the invention comprises a
photoionization chamber and a differential chamber which are adjacent to each other; the adjacent side walls of the
photoionization chamber and the differential chamber are communicated with a perforated
ladle which is convex towards the differential chamber; the outlet of the perforated
ladle is corresponding to the middle of the lead-out
electrode and acceleration
electrode of a time-of-flight
mass spectrometer; the inlet of the perforated
ladle is corresponding to an inverted horn-shaped
nozzle on the side wall of the differential chamber; the inlet of the perforated ladle is in inverted horn shape; an electro-spray needle corresponding to the
nozzle is arranged outside the differential chamber; the other end of the electro-spray needle is connected with an
injection pump. The device of the invention combines the electro-spray sampling and
vacuum ultraviolet photoionization mass spectrometry technique, directly sprays the sample to be measured out of the electro-spray needle during the testing and analysis process, and requires no complex pre-
processing and separation of the sample; as the electro-spraying has no restrictions on the
thermal stability and volatility of the sample, the device of the invention can be widely applied to the analysis and detection of simple organic matters and complex organic mixtures and can monitor certain
organic reaction processes in real time.