ESI-MS/MS
was carried out by using a Linear Ion Trap Mass Spectrometer (Thermo
Scientific, USA) equipped with an electrospray ionization (ESI) machine.
The test sample was investigated by direct injection into the syringe
pump at a 13 μL/min flow rate in the negative mode of ionization
of ESI source. The temperature of the capillary was set at 198 °C.
A comprehensive scan of mass spectrum data was attained in the mass
range of 50–2000 m/z. The
final ionization produced was confiscated in the ion source and fragmented
by collision-induced dissociation energies (CID) in the 16–32
range based on the constancy of the obvious forerunner ions identified
for cyclic mass spectrometry.58 (link)
was carried out by using a Linear Ion Trap Mass Spectrometer (Thermo
Scientific, USA) equipped with an electrospray ionization (ESI) machine.
The test sample was investigated by direct injection into the syringe
pump at a 13 μL/min flow rate in the negative mode of ionization
of ESI source. The temperature of the capillary was set at 198 °C.
A comprehensive scan of mass spectrum data was attained in the mass
range of 50–2000 m/z. The
final ionization produced was confiscated in the ion source and fragmented
by collision-induced dissociation energies (CID) in the 16–32
range based on the constancy of the obvious forerunner ions identified
for cyclic mass spectrometry.58 (link)
