FOOD SCIENCE AND BIOTECHNOLOGY, cilt.26, sa.2, ss.537-543, 2017 (SCI-Expanded)
The dissipation pattern of a commercial cyenopyrafen formulation sprayed at the recommended dose on Asian pears (two different species) grown at two different sites was investigated using liquid chromatography-ultraviolet detection. Samples collected randomly over 14 days were extracted using acetone, partitioned using n-hexane/dichloromethane (8/2, v/v), and purified using a Florisil solidphase extraction cartridge. The residues in field-incurred samples were confirmed via liquid chromatography-tandem mass spectrometry. The method was validated in terms of excellent linearity in the solvent (R (2)=1); moreover, satisfactory recoveries (89.0-107.3%) were obtained at three fortification levels with a relative standard deviation (RSD)ae