MA) was composed of a 600Emulti solvent delivery system equipped with a
996 photodiode array detector. Control of the equipment, data acquisition,
processing, and management of the chromatographic information were
performedby the Empower 2 software (Waters). GC-MSwas performedon
aThermo-Electron instrument coupled to aThermo-Electron spectrometer.
GCconditions:DB-5MS (5%phenyl)-methylpolysiloxane column(30m
0.25 mm, film thickness 0.1μm); He linear velocity, 30 cm/s; 50C
isothermal for 4min, linear gradient to 300 at 40C/min; final temperature
hold, 20min. MS conditions: ionization energy, 70 eV; ion source tempera-ture, 250C; interface temperature, 270C; mass range, 45600 amu