A method was developed for determination of imidacloprid residue in tea by high performance liquid chromatography (HPLC) with UV detector. Imidacloprid in tea samples was extracted with methyl alcohol and re-extracted by dichloromethane then cleaned up with the ENVI-18 cartridge. Imdacloprid was eluted with acetonitrile:water(v/v, 30:70) solution from the cartridge and detected with HPLC. The recovery of imidacolprid ranged from 81.5%~87.9% with the RSD less than 10.2%. Practical determination limit was 0.05 mg/kg.
HOU Ru-yan
,
ZHU Xu-jun
,
ZHANG Zheng-zhu
,
CAI Hui-mei
,
WAN Xiao-chun
. A Method for Determination of Imidacloprid Residue in Tea with HPLC-UV[J]. Journal of Tea Science, 2009
, 29(1)
: 67
-71
.
DOI: 10.13305/j.cnki.jts.2009.1.011
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