The electron impact ionization mass spectra (EI-MS) of ascorbic acid were performed using a GCeMS equipped with a direct insertion probe (DIP) (Thermo Fisher Scientific, Waltham, MA).
The electron impact ionization mass spectra (EI-MS) of ascorbic acid were performed usinga GCeMS equipped with a direct insertion probe (DIP) (Thermo Fisher Scientific, Waltham, MA).