UNASSIGNED: A simple, sensitive, and efficient method of using a pipette vial to perform dispersive liquid-liquid microextraction based on the solidification of floating organic droplets was coupled with high-performance liquid chromatography and a diode array detector for the preconcentration and analysis of four @entity36545 insecticides in fruit juice. In this method, @entity31604 was used as an extractant, and a snipped pipette was used as an experimental vial to simplify the procedure of collecting and separating solidified extractant. The experimental parameters were optimized using a Plackett-Burman design and one-factor-at-a-time method. Under the optimal conditions in the water model, the limits of detection for analytes varied from 0.03 to 0.28  g @entity5022 , and the enrichment factors ranged from 147 to 206. Linearity was achieved for @entity15663 and @entity35131 in a range of 0.5-500  g @entity5022 , for @entity61351 in a range of 1-500  g @entity5022 , and for @entity57400 in a range of 5-500  g @entity5022 . The correlation coefficients for the analytes ranged from 0.9986 to 0.9994 with recoveries of 91.4-110.9%. Finally, the developed technique was successfully applied to fruit juice samples with acceptable results. The relative standard deviations of the analytes at two spiking levels (50 and 200  g @entity5022 ) varied between 0.2 and 4.5%. This article is protected by copyright. All rights reserved.

Pipette vial dispersive liquid-liquid microextraction combined with high-performance liquid chromatography for the determination of XXXX insecticide in fruit juice.

@entity36545 :: ('CHEBI:39416', 'Chemical') :: ['benzoylurea'] @entity15663 :: ('MESH:D004132', 'Chemical') :: ['diflubenzuron'] @entity5022 :: ('28938', 'Gene') :: ['L(-1)'] @entity57400 :: ('MESH:C023957', 'Chemical') :: ['triflumuron'] @entity61351 :: ('MESH:C058039', 'Chemical') :: ['hexaflumuron'] @entity31604 :: ('MESH:D007851', 'Chemical') :: ['1-dodecanol'] @entity35131 :: ('MESH:C067660', 'Chemical') :: ['flufenoxuron']
@entity36545 :: (CHEBI:39416,Chemical) :: ['benzoylurea']
