Gas chromatography-mass spectrometry method for determining residual quantity of photoinitiator TPO-L in UV adhesive

The invention belongs to the technical field of analytical chemistry, and discloses a gas chromatography-mass spectrometry method for measuring the residual quantity of a photoinitiator TPO-L in UV adhesive, which comprises the following steps: curing the UV adhesive, extracting, concentrating the supernate obtained by extraction, fixing the volume to 2-3ml to obtain extract liquor, eluting the extract liquor, and collecting eluate, thereby obtaining the residual quantity of the photoinitiator TPO-L in the UV adhesive. The eluent is blown to be nearly dry, the constant volume is 1-2 ml, a to-be-detected solution is obtained through filtering of a filter membrane, and the to-be-detected solution is detected through GC-MS. According to the present invention, by optimally setting the instrument analysis parameters, the target compound ethyl 2, 4, 6-trimethylbenzoyl phenylphosphonate separated by using the HP-5ms chromatographic column or the DB-5ht chromatographic column can obtain the symmetric chromatographic