The solid phase microextraction (SPME) was performed with a manual holder with divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS)-50/30m fiber (purchased from Supelco, PA, USA).
The solid phase microextraction (SPME) was performed with a manual holder with divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS)-50/30m fiber (purchased from Supelco, PA, USA).