title: Ultrasound-assisted ionic liquid-based dispersive liquid-liquid microextraction for preconcentration of patent blue V and its determination in food samples by UV-visible spectrophotometry.
abstract: Ultrasound-assisted ionic liquid-based dispersive liquid-liquid microextraction procedure (UA-IL-DLLME) was developed for determination of trace levels of patent blue V prior to its determination by UV-visible spectrophotometry. Patent blue V was extracted from 25-mL sample into a 100-μL volume of ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]), with the aid of sonication in an ultrasonic bath. Several variables affecting microextraction efficiency were optimized. Under the optimum experimental conditions, the detection limit (3 s) was 0.68 μg L(-1), and the preconcentration factor was 100. The relative standard deviation for six replicate determinations of patent blue V was 4.5%. The method was applied to the determination of patent blue V in food samples. The proposed procedure is effective, very simple, and fast.
authors: Chemistry Department, Faculty of Science and Arts, Gaziosmanpasa University, 60250, Tokat, Turkey.
authors: Yunus Emre
authors: YE
authors: Unsal
authors: Mustafa
authors: M
authors: Soylak
authors: Mustafa
authors: M
authors: Tuzen
mesh_terms: D004784:Environmental Monitoring; D005504:Food Analysis / Q000379:methods*; D007093:Imidazoles; D052578:Ionic Liquids; D007477:Ions; D057230:Limit of Detection; D059627:Liquid Phase Microextraction / Q000379:methods*; D012394:Rosaniline Dyes / Q000737:chemistry*; D014465:Ultrasonics / Q000379:methods*
chemical_list: C412621:1-butyl-3-methylimidazolium hexafluorophosphate; D007093:Imidazoles; D052578:Ionic Liquids; D007477:Ions; D012394:Rosaniline Dyes; C008769:sulfan blue