SOP for the determination of Bifenthrin residues in Black tea and tea brew (provided by India)

摘要

This method is applicable for the determination of bifenthrin residue in black tea and tea infusion. Bifenthrin is extracted with acetoni-trile: water (2:1, v/v) mixture from the black tea samples. The extract is partitioned with sodium chloride and cleaned up through florisil column. Then it is eluted with ether/hexane mixture. The concentrated residue in the eluate is determined by GC with electron capture detector.