Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7594766 | Food Chemistry | 2015 | 5 Pages |
Abstract
A new dispersive liquid-liquid microextraction, magnetic stirrer induced dispersive ionic-liquid microextraction (MS-IL-DLLME) was developed to quantify the trace level of vanadium in real water and food samples by graphite furnace atomic absorption spectrometry (GFAAS). In this extraction method magnetic stirrer was applied to obtained a dispersive medium of 1-butyl-3-methylimidazolium hexafluorophosphate [C4MIM][PF6] in aqueous solution of (real water samples and digested food samples) to increase phase transfer ratio, which significantly enhance the recovery of vanadium - 4-(2-pyridylazo) resorcinol (PAR) chelate. Variables having vital role on desired microextraction methods were optimised to obtain the maximum recovery of study analyte. Under the optimised experimental variables, enhancement factor (EF) and limit of detection (LOD) were achieved to be 125 and 18 ng Lâ1, respectively. Validity and accuracy of the desired method was checked by analysis of certified reference materials (SLRS-4 Riverine water and NIST SRM 1515 Apple leaves). The relative standard deviation (RSD) for 10 replicate determinations at 0.5 μg Lâ1 of vanadium level was found to be <5.0%. This method was successfully applied to real water and acid digested food samples.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Naeemullah Naeemullah, Tasneem Gul Kazi, Mustafa Tuzen,