the column was washed first with 30 ml of hexane-benzene (50:50) and then the 10 NBs were elute with 100 ml of benzene. The elute was concentrated to 1.0 ml and subject to GC-MS-SIM system.
the column was washed first with 30 ml of hexane-benzene (50:50) and then the 10 NBs were elute with 100 ml of benzene. The elute was concentrated to 1.0 ml and subject to GC-MS-SIM system.