Unsal Yunus Emre, Soylak Mustafa, Tuzen Mustafa
Chemistry Department, Faculty of Science and Arts, Gaziosmanpasa University, 60250, Tokat, Turkey.
Environ Monit Assess. 2015 Apr;187(4):203. doi: 10.1007/s10661-015-4427-4. Epub 2015 Mar 24.
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.
开发了超声辅助离子液体分散液液微萃取法（UA-IL-DLLME），用于在紫外可见分光光度法测定专利蓝V之前对其痕量水平进行测定。在超声浴中借助超声处理，将专利蓝V从25 mL样品中萃取到100 μL离子液体1-丁基-3-甲基咪唑六氟磷酸盐（[bmim][PF6]）中。对影响微萃取效率的几个变量进行了优化。在最佳实验条件下，检测限（3s）为0.68 μg L(-1)，预富集因子为100。专利蓝V六次重复测定的相对标准偏差为4.5%。该方法应用于食品样品中专利蓝V的测定。所提出的方法有效、非常简单且快速。
