Mulit-residue determination of 5 pesticides in tea by SPE-GC

This paper reported a mulit-residue analysis of 5 kinds of pesticides(organochlorine and pyrethroid:α-HCH,β-HCH,γ-HCH,δ-HCH,pp′-DDE,op′-DDT,pp′DDD,pp′-DDT,cypermethrin,fenvalerate,fenpropathrin) by ECD-GC.The results showed that the recoveries were in range of 71.1%-88.0%,the coefficients of variation were 0.7%-12.8% and minimum limits of detection were 0.04-2.70μg·L-1.