Int. J. Renewable Energy & Environmental Engineering
ISSN 2319-5347, ISI Impact Factor: 0.763
VOLUME 03 NO. 01 JANUARY 2015:
Title: Determination of Dimefluthrin Residue in selected groups
of Food by using a buffered QuEChERS method, followed by
Liquid Chromatography – Mass Spectrometry analysis
Authors: Phan
Nguyen Thu Xuan, Tran Thi Kieu Anh
Abstract: This paper reports a
method for dimefluthrin residue determination in
selected groups of food (vegetable, fruit, rice and
dried fish), where dimefluthrin was extracted and
cleaned using a buffered QuEChERS (Quick, Easy, Cheap,
Effective, Rugged and Safe) method, followed by LC-MS/MS
analysis. The results showed the matrixmatchedm
calibration curve linearity. The correlation
coefficients were >0.99 in the range of Dimefluthrin
concentrations from 10 to 1000 g/L in different
selected matrix samples. Recoveries (spiked at three
different levels 0.05 mg/kg, 0.1 mg/kg and 0.2 mg/kg)
were from 76.8 to 114% and the relative standard
deviations (RSD)
were lower than 10%. The method limit of detection (LOD)
was 0.001 mg/Kg and the method limit of quantitation
(LOQ) was 0.003 mg/Kg.The method was used to analyte
dimefluthrin residue in 100 samples of food.
dimefluthrin concentrations were found from non
detection to 6.4 mg/kg.The method is applicable for the
determination of dimefluthrin at trace concentrations.
Keywords: Dimefluthrin, Pyrethroid
pesticide, Buffered QuEChERS, LC-MS/MS analysis
Pages:
40-43